diff --git a/docs/dli/sqlreference/ALL_META.TXT.json b/docs/dli/sqlreference/ALL_META.TXT.json index 474594b3..6313d6c5 100644 --- a/docs/dli/sqlreference/ALL_META.TXT.json +++ b/docs/dli/sqlreference/ALL_META.TXT.json @@ -1,3821 +1,9798 @@ [ + { + "dockw":"SQL Syntax Reference" + }, { "uri":"dli_08_0221.html", + "node_id":"dli_08_0221.xml", "product_code":"dli", "code":"1", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Spark SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Spark SQL Syntax Reference", "githuburl":"" }, { "uri":"dli_08_0266.html", + "node_id":"dli_08_0266.xml", "product_code":"dli", "code":"2", "des":"This section describes the common configuration items of the SQL syntax for DLI batch jobs.", "doc_type":"sqlreference", "kw":"Common Configuration Items of Batch SQL Jobs,Spark SQL Syntax Reference,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Common Configuration Items of Batch SQL Jobs", "githuburl":"" }, { "uri":"dli_08_0219.html", + "node_id":"dli_08_0219.xml", "product_code":"dli", "code":"3", "des":"This section describes the Spark SQL syntax list provided by DLI. For details about the parameters and examples, see the syntax description.", "doc_type":"sqlreference", "kw":"SQL Syntax Overview of Batch Jobs,Spark SQL Syntax Reference,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"SQL Syntax Overview of Batch Jobs", "githuburl":"" }, { - "uri":"dli_08_0070.html", + "uri":"dli_08_0477.html", + "node_id":"dli_08_0477.xml", "product_code":"dli", "code":"4", + "des":"This section describes the open source Spark SQL syntax supported by DLI. For details about the syntax, parameters, and examples, see Spark SQL Syntax.", + "doc_type":"sqlreference", + "kw":"Spark Open Source Commands,Spark SQL Syntax Reference,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Spark Open Source Commands", + "githuburl":"" + }, + { + "uri":"dli_08_0070.html", + "node_id":"dli_08_0070.xml", + "product_code":"dli", + "code":"5", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Databases", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Databases", "githuburl":"" }, { "uri":"dli_08_0071.html", + "node_id":"dli_08_0071.xml", "product_code":"dli", - "code":"5", + "code":"6", "des":"This statement is used to create a database.IF NOT EXISTS: Prevents system errors if the database to be created exists.COMMENT: Describes a database.DBPROPERTIES: Specifi", "doc_type":"sqlreference", "kw":"Creating a Database,Databases,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Database", "githuburl":"" }, { "uri":"dli_08_0072.html", + "node_id":"dli_08_0072.xml", "product_code":"dli", - "code":"6", + "code":"7", "des":"This statement is used to delete a database.IF EXISTS: Prevents system errors if the database to be deleted does not exist.DATABASE and SCHEMA can be used interchangeably", "doc_type":"sqlreference", "kw":"Deleting a Database,Databases,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Deleting a Database", "githuburl":"" }, { "uri":"dli_08_0073.html", + "node_id":"dli_08_0073.xml", "product_code":"dli", - "code":"7", + "code":"8", "des":"This syntax is used to view the information about a specified database, including the database name and database description.EXTENDED: Displays the database properties.If", "doc_type":"sqlreference", "kw":"Viewing a Specified Database,Databases,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Viewing a Specified Database", "githuburl":"" }, { "uri":"dli_08_0074.html", + "node_id":"dli_08_0074.xml", "product_code":"dli", - "code":"8", + "code":"9", "des":"This syntax is used to query all current databases.NoneKeyword DATABASES is equivalent to SCHEMAS. You can use either of them in this statement.View all the current datab", "doc_type":"sqlreference", "kw":"Viewing All Databases,Databases,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Viewing All Databases", "githuburl":"" }, { "uri":"dli_08_0223.html", + "node_id":"dli_08_0223.xml", "product_code":"dli", - "code":"9", + "code":"10", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Creating an OBS Table", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating an OBS Table", "githuburl":"" }, { "uri":"dli_08_0076.html", + "node_id":"dli_08_0076.xml", "product_code":"dli", - "code":"10", + "code":"11", "des":"Create an OBS table using the DataSource syntax.The main differences between the DataSource and the Hive syntax lie in the supported data formats and the number of suppor", "doc_type":"sqlreference", "kw":"Creating an OBS Table Using the DataSource Syntax,Creating an OBS Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating an OBS Table Using the DataSource Syntax", "githuburl":"" }, { "uri":"dli_08_0077.html", + "node_id":"dli_08_0077.xml", "product_code":"dli", - "code":"11", + "code":"12", "des":"This statement is used to create an OBS table using the Hive syntax. The main differences between the DataSource and the Hive syntax lie in the supported data formats and", "doc_type":"sqlreference", "kw":"Creating an OBS Table Using the Hive Syntax,Creating an OBS Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating an OBS Table Using the Hive Syntax", "githuburl":"" }, { "uri":"dli_08_0224.html", + "node_id":"dli_08_0224.xml", "product_code":"dli", - "code":"12", + "code":"13", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Creating a DLI Table", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a DLI Table", "githuburl":"" }, { "uri":"dli_08_0098.html", + "node_id":"dli_08_0098.xml", "product_code":"dli", - "code":"13", + "code":"14", "des":"This DataSource syntax can be used to create a DLI table. The main differences between the DataSource and the Hive syntax lie in the supported data formats and the number", "doc_type":"sqlreference", "kw":"Creating a DLI Table Using the DataSource Syntax,Creating a DLI Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a DLI Table Using the DataSource Syntax", "githuburl":"" }, { "uri":"dli_08_0204.html", + "node_id":"dli_08_0204.xml", "product_code":"dli", - "code":"14", + "code":"15", "des":"This Hive syntax is used to create a DLI table. The main differences between the DataSource and the Hive syntax lie in the supported data formats and the number of suppor", "doc_type":"sqlreference", "kw":"Creating a DLI Table Using the Hive Syntax,Creating a DLI Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a DLI Table Using the Hive Syntax", "githuburl":"" }, { "uri":"dli_08_0087.html", + "node_id":"dli_08_0087.xml", "product_code":"dli", - "code":"15", + "code":"16", "des":"This statement is used to delete tables.If the table is stored in OBS, only the metadata is deleted. The data stored on OBS is not deleted.If the table is stored in DLI, ", "doc_type":"sqlreference", "kw":"Deleting a Table,Spark SQL Syntax Reference,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Deleting a Table", "githuburl":"" }, { "uri":"dli_08_0089.html", + "node_id":"dli_08_0089.xml", "product_code":"dli", - "code":"16", + "code":"17", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Viewing Tables", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Viewing Tables", "githuburl":"" }, { "uri":"dli_08_0090.html", + "node_id":"dli_08_0090.xml", "product_code":"dli", - "code":"17", + "code":"18", "des":"This statement is used to view all tables and views in the current database.FROM/IN: followed by the name of a database whose tables and views will be displayed.NoneCreat", "doc_type":"sqlreference", "kw":"Viewing All Tables,Viewing Tables,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Viewing All Tables", "githuburl":"" }, { "uri":"dli_08_0091.html", + "node_id":"dli_08_0091.xml", "product_code":"dli", - "code":"18", + "code":"19", "des":"This statement is used to show the statements for creating a table.CREATE TABLE: statement for creating a tableThe table specified in this statement must exist. Otherwise", "doc_type":"sqlreference", "kw":"Viewing Table Creation Statements,Viewing Tables,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Viewing Table Creation Statements", "githuburl":"" }, { "uri":"dli_08_0092.html", + "node_id":"dli_08_0092.xml", "product_code":"dli", - "code":"19", + "code":"20", "des":"Check the properties of a table.TBLPROPERTIES: This statement allows you to add a key/value property to a table.property_name is case sensitive. You cannot specify multip", "doc_type":"sqlreference", "kw":"Viewing Table Properties,Viewing Tables,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Viewing Table Properties", "githuburl":"" }, { "uri":"dli_08_0093.html", + "node_id":"dli_08_0093.xml", "product_code":"dli", - "code":"20", + "code":"21", "des":"This statement is used to query all columns in a specified table.COLUMNS: columns in the current tableFROM/IN: followed by the name of a database whose tables and views w", "doc_type":"sqlreference", "kw":"Viewing All Columns in a Specified Table,Viewing Tables,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Viewing All Columns in a Specified Table", "githuburl":"" }, { "uri":"dli_08_0094.html", + "node_id":"dli_08_0094.xml", "product_code":"dli", - "code":"21", + "code":"22", "des":"This statement is used to view all partitions in a specified table.PARTITIONS: partitions in a specified tablePARTITION: a specified partitionThe table specified in this ", "doc_type":"sqlreference", "kw":"Viewing All Partitions in a Specified Table,Viewing Tables,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Viewing All Partitions in a Specified Table", "githuburl":"" }, { "uri":"dli_08_0105.html", + "node_id":"dli_08_0105.xml", "product_code":"dli", - "code":"22", + "code":"23", "des":"This statement is used to view the table statistics. The names and data types of all columns in a specified table will be returned.EXTENDED: displays all metadata of the ", "doc_type":"sqlreference", "kw":"Viewing Table Statistics,Viewing Tables,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Viewing Table Statistics", "githuburl":"" }, { "uri":"dli_08_0262.html", + "node_id":"dli_08_0262.xml", "product_code":"dli", - "code":"23", + "code":"24", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Modifying a Table", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Modifying a Table", "githuburl":"" }, { "uri":"dli_08_0263.html", + "node_id":"dli_08_0263.xml", "product_code":"dli", - "code":"24", + "code":"25", "des":"This statement is used to add one or more new columns to a table.ADD COLUMNS: columns to addCOMMENT: column descriptionDo not run this SQL statement concurrently. Otherwi", "doc_type":"sqlreference", "kw":"Adding a Column,Modifying a Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Adding a Column", "githuburl":"" }, { - "uri":"dli_08_0354.html", + "uri":"dli_08_0470.html", + "node_id":"dli_08_0470.xml", "product_code":"dli", - "code":"25", + "code":"26", + "des":"You can modify the column comments of non-partitioned or partitioned tables.CHANGE COLUMN: Modify a column.COMMENT: column descriptionChange the comment of the c1 column ", + "doc_type":"sqlreference", + "kw":"Modifying Column Comments,Modifying a Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Modifying Column Comments", + "githuburl":"" + }, + { + "uri":"dli_08_0354.html", + "node_id":"dli_08_0354.xml", + "product_code":"dli", + "code":"27", "des":"DLI controls multiple versions of backup data for restoration. After the multiversion function is enabled, the system automatically backs up table data when you delete or", "doc_type":"sqlreference", "kw":"Enabling or Disabling Multiversion Backup,Modifying a Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Enabling or Disabling Multiversion Backup", "githuburl":"" }, { "uri":"dli_08_0080.html", + "node_id":"dli_08_0080.xml", "product_code":"dli", - "code":"26", + "code":"28", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Syntax for Partitioning a Table", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Syntax for Partitioning a Table", "githuburl":"" }, { "uri":"dli_08_0081.html", + "node_id":"dli_08_0081.xml", "product_code":"dli", - "code":"27", + "code":"29", "des":"After an OBS partitioned table is created, no partition information is generated for the table. Partition information is generated only after you:Insert data to the OBS p", "doc_type":"sqlreference", "kw":"Adding Partition Data (Only OBS Tables Supported),Syntax for Partitioning a Table,SQL Syntax Referen", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Adding Partition Data (Only OBS Tables Supported)", "githuburl":"" }, { "uri":"dli_08_0082.html", + "node_id":"dli_08_0082.xml", "product_code":"dli", - "code":"28", + "code":"30", "des":"This statement is used to rename partitions.PARTITION: a specified partitionRENAME: new name of the partitionThis statement is used for OBS table operations.The table and", "doc_type":"sqlreference", "kw":"Renaming a Partition (Only OBS Tables Supported),Syntax for Partitioning a Table,SQL Syntax Referenc", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Renaming a Partition (Only OBS Tables Supported)", "githuburl":"" }, { "uri":"dli_08_0083.html", + "node_id":"dli_08_0083.xml", "product_code":"dli", - "code":"29", - "des":"Deletes one or more partitions from a partitioned table.The table in which partitions are to be deleted must exist. Otherwise, an error is reported.The to-be-deleted part", + "code":"31", + "des":"This statement is used to delete one or more partitions from a partitioned table.Partitioned tables are classified into OBS tables and DLI tables. You can delete one or m", "doc_type":"sqlreference", "kw":"Deleting a Partition,Syntax for Partitioning a Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Deleting a Partition", "githuburl":"" }, { "uri":"dli_08_0343.html", + "node_id":"dli_08_0343.xml", "product_code":"dli", - "code":"30", - "des":"This statement is used to delete one or more partitions based on specified conditions.This statement is used for OBS table operations only.The table in which partitions a", + "code":"32", + "des":"This statement is used to delete one or more partitions based on specified conditions.This statement is only used for OBS tables.The table in which partitions are to be d", "doc_type":"sqlreference", - "kw":"Deleting Partitions by Specifying Filter Criteria (Only OBS Tables Supported),Syntax for Partitionin", - "title":"Deleting Partitions by Specifying Filter Criteria (Only OBS Tables Supported)", + "kw":"Deleting Partitions by Specifying Filter Criteria (Only Supported on OBS Tables),Syntax for Partitio", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Deleting Partitions by Specifying Filter Criteria (Only Supported on OBS Tables)", "githuburl":"" }, { "uri":"dli_08_0084.html", + "node_id":"dli_08_0084.xml", "product_code":"dli", - "code":"31", + "code":"33", "des":"This statement is used to modify the positions of table partitions.PARTITION: a specified partitionLOCATION: path of the partitionFor a table partition whose position is ", "doc_type":"sqlreference", "kw":"Altering the Partition Location of a Table (Only OBS Tables Supported),Syntax for Partitioning a Tab", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Altering the Partition Location of a Table (Only OBS Tables Supported)", "githuburl":"" }, { "uri":"dli_08_0079.html", + "node_id":"dli_08_0079.xml", "product_code":"dli", - "code":"32", + "code":"34", "des":"This statement is used to update the partition information about a table in the Metastore.OrPARTITIONS: partition informationSERDEPROPERTIES: Serde attributeThis statemen", "doc_type":"sqlreference", "kw":"Updating Partitioned Table Data (Only OBS Tables Supported),Syntax for Partitioning a Table,SQL Synt", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Updating Partitioned Table Data (Only OBS Tables Supported)", "githuburl":"" }, { "uri":"dli_08_0359.html", + "node_id":"dli_08_0359.xml", "product_code":"dli", - "code":"33", + "code":"35", "des":"Spark caches Parquet metadata to improve performance. If you update a Parquet table, the cached metadata is not updated. Spark SQL cannot find the newly inserted data and", "doc_type":"sqlreference", "kw":"Updating Table Metadata with REFRESH TABLE,Syntax for Partitioning a Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Updating Table Metadata with REFRESH TABLE", "githuburl":"" }, { "uri":"dli_08_0100.html", + "node_id":"dli_08_0100.xml", "product_code":"dli", - "code":"34", + "code":"36", "des":"The LOAD DATA function can be used to import data in CSV, Parquet, ORC, JSON, and Avro formats. The data is converted into the Parquet data format for storage.INPATH: pat", "doc_type":"sqlreference", "kw":"Importing Data to the Table,Spark SQL Syntax Reference,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Importing Data to the Table", "githuburl":"" }, { "uri":"dli_08_0095.html", + "node_id":"dli_08_0095.xml", "product_code":"dli", - "code":"35", + "code":"37", "des":"This statement is used to insert the SELECT query result or a certain data record into a table.Insert the SELECT query result into a table.INSERT INTO [TABLE] [db_name.]t", "doc_type":"sqlreference", "kw":"Inserting Data,Spark SQL Syntax Reference,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Inserting Data", "githuburl":"" }, { "uri":"dli_08_0217.html", + "node_id":"dli_08_0217.xml", "product_code":"dli", - "code":"36", + "code":"38", "des":"This statement is used to delete data from the DLI or OBS table.Only data in the DLI or OBS table can be deleted.", "doc_type":"sqlreference", "kw":"Clearing Data,Spark SQL Syntax Reference,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Clearing Data", "githuburl":"" }, { "uri":"dli_08_0205.html", + "node_id":"dli_08_0205.xml", "product_code":"dli", - "code":"37", + "code":"39", "des":"This statement is used to directly write query results to a specified directory. The query results can be stored in CSV, Parquet, ORC, JSON, or Avro format.USING: Specifi", "doc_type":"sqlreference", "kw":"Exporting Search Results,Spark SQL Syntax Reference,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Exporting Search Results", "githuburl":"" }, { "uri":"dli_08_0349.html", + "node_id":"dli_08_0349.xml", "product_code":"dli", - "code":"38", + "code":"40", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Backing Up and Restoring Data of Multiple Versions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Backing Up and Restoring Data of Multiple Versions", "githuburl":"" }, { "uri":"dli_08_0350.html", + "node_id":"dli_08_0350.xml", "product_code":"dli", - "code":"39", + "code":"41", "des":"After multiversion is enabled, backup data is retained for seven days by default. You can change the retention period by setting system parameterdli.multi.version.retenti", "doc_type":"sqlreference", "kw":"Setting the Retention Period for Multiversion Backup Data,Backing Up and Restoring Data of Multiple ", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Setting the Retention Period for Multiversion Backup Data", "githuburl":"" }, { "uri":"dli_08_0351.html", + "node_id":"dli_08_0351.xml", "product_code":"dli", - "code":"40", + "code":"42", "des":"After the multiversion function is enabled, you can run the SHOW HISTORY command to view the backup data of a table. For details about the syntax for enabling or disablin", "doc_type":"sqlreference", "kw":"Viewing Multiversion Backup Data,Backing Up and Restoring Data of Multiple Versions,SQL Syntax Refer", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Viewing Multiversion Backup Data", "githuburl":"" }, { "uri":"dli_08_0352.html", + "node_id":"dli_08_0352.xml", "product_code":"dli", - "code":"41", + "code":"43", "des":"After the multiversion function is enabled, you can run the RESTORE TABLE statement to restore a table or partition of a specified version. For details about the syntax f", "doc_type":"sqlreference", "kw":"Restoring Multiversion Backup Data,Backing Up and Restoring Data of Multiple Versions,SQL Syntax Ref", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Restoring Multiversion Backup Data", "githuburl":"" }, { "uri":"dli_08_0353.html", + "node_id":"dli_08_0353.xml", "product_code":"dli", - "code":"42", + "code":"44", "des":"After the multiversion function is enabled, expired backup data will be directly deleted by the system when theinsert overwrite or truncate statement is executed. You can", "doc_type":"sqlreference", "kw":"Configuring the Trash Bin for Expired Multiversion Data,Backing Up and Restoring Data of Multiple Ve", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Configuring the Trash Bin for Expired Multiversion Data", "githuburl":"" }, { "uri":"dli_08_0355.html", + "node_id":"dli_08_0355.xml", "product_code":"dli", - "code":"43", + "code":"45", "des":"The retention period of multiversion backup data takes effect each time the insert overwrite or truncate statement is executed. If neither statement is executed for the t", "doc_type":"sqlreference", "kw":"Deleting Multiversion Backup Data,Backing Up and Restoring Data of Multiple Versions,SQL Syntax Refe", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Deleting Multiversion Backup Data", "githuburl":"" }, { - "uri":"dli_08_0118.html", + "uri":"en-us_topic_0000001571023676.html", + "node_id":"en-us_topic_0000001571023676.xml", "product_code":"dli", - "code":"44", + "code":"46", + "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", + "doc_type":"sqlreference", + "kw":"Table Lifecycle Management", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Table Lifecycle Management", + "githuburl":"" + }, + { + "uri":"en-us_topic_0000001621263317.html", + "node_id":"en-us_topic_0000001621263317.xml", + "product_code":"dli", + "code":"47", + "des":"DLI provides table lifecycle management to allow you to specify the lifecycle of a table when creating the table. DLI determines whether to reclaim a table based on the t", + "doc_type":"sqlreference", + "kw":"Specifying the Lifecycle of a Table When Creating the Table,Table Lifecycle Management,SQL Syntax Re", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Specifying the Lifecycle of a Table When Creating the Table", + "githuburl":"" + }, + { + "uri":"en-us_topic_0000001621382957.html", + "node_id":"en-us_topic_0000001621382957.xml", + "product_code":"dli", + "code":"48", + "des":"This section describes how to modify the lifecycle of an existing partitioned or non-partitioned table.When the lifecycle function is enabled for the first time, the syst", + "doc_type":"sqlreference", + "kw":"Modifying the Lifecycle of a Table,Table Lifecycle Management,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Modifying the Lifecycle of a Table", + "githuburl":"" + }, + { + "uri":"en-us_topic_0000001621542965.html", + "node_id":"en-us_topic_0000001621542965.xml", + "product_code":"dli", + "code":"49", + "des":"This section describes how to disable or restore the lifecycle of a specified table or partition.You can disable or restore the lifecycle of a table in either of the foll", + "doc_type":"sqlreference", + "kw":"Disabling or Restoring the Lifecycle of a Table,Table Lifecycle Management,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Disabling or Restoring the Lifecycle of a Table", + "githuburl":"" + }, + { + "uri":"dli_08_0118.html", + "node_id":"dli_08_0118.xml", + "product_code":"dli", + "code":"50", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Creating a Datasource Connection with an HBase Table", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Datasource Connection with an HBase Table", "githuburl":"" }, { "uri":"dli_08_0119.html", + "node_id":"dli_08_0119.xml", "product_code":"dli", - "code":"45", - "des":"This statement is used to create a DLI table and associate it with an existing HBase table.Before creating a DLI table and associating it with HBase, you need to create a", + "code":"51", + "des":"This statement is used to create a DLI table and associate it with an existing HBase table.In Spark cross-source development scenarios, there is a risk of password leakag", "doc_type":"sqlreference", "kw":"Creating a DLI Table and Associating It with HBase,Creating a Datasource Connection with an HBase Ta", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a DLI Table and Associating It with HBase", "githuburl":"" }, { "uri":"dli_08_0120.html", + "node_id":"dli_08_0120.xml", "product_code":"dli", - "code":"46", + "code":"52", "des":"This statement is used to insert data in a DLI table to the associated HBase table.Insert the SELECT query result into a table.INSERT INTO DLI_TABLE\n SELECT field1,field", "doc_type":"sqlreference", "kw":"Inserting Data to an HBase Table,Creating a Datasource Connection with an HBase Table,SQL Syntax Ref", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Inserting Data to an HBase Table", "githuburl":"" }, { "uri":"dli_08_0121.html", + "node_id":"dli_08_0121.xml", "product_code":"dli", - "code":"47", + "code":"53", "des":"This statement is used to query data in an HBase table.LIMIT is used to limit the query results. Only INT type is supported by the number parameter.The table to be querie", "doc_type":"sqlreference", "kw":"Querying an HBase Table,Creating a Datasource Connection with an HBase Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Querying an HBase Table", "githuburl":"" }, { "uri":"dli_08_0220.html", + "node_id":"dli_08_0220.xml", "product_code":"dli", - "code":"48", + "code":"54", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Creating a Datasource Connection with an OpenTSDB Table", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Datasource Connection with an OpenTSDB Table", "githuburl":"" }, { "uri":"dli_08_0122.html", + "node_id":"dli_08_0122.xml", "product_code":"dli", - "code":"49", + "code":"55", "des":"Run the CREATE TABLE statement to create the DLI table and associate it with the existing metric in OpenTSDB. This syntax supports the OpenTSDB of CloudTable and MRS.Befo", "doc_type":"sqlreference", "kw":"Creating a DLI Table and Associating It with OpenTSDB,Creating a Datasource Connection with an OpenT", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a DLI Table and Associating It with OpenTSDB", "githuburl":"" }, { "uri":"dli_08_0123.html", + "node_id":"dli_08_0123.xml", "product_code":"dli", - "code":"50", + "code":"56", "des":"Run the INSERT INTO statement to insert the data in the DLI table to the associated OpenTSDB metric.If no metric exists on the OpenTSDB, a new metric is automatically cre", "doc_type":"sqlreference", "kw":"Inserting Data to the OpenTSDB Table,Creating a Datasource Connection with an OpenTSDB Table,SQL Syn", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Inserting Data to the OpenTSDB Table", "githuburl":"" }, { "uri":"dli_08_0124.html", + "node_id":"dli_08_0124.xml", "product_code":"dli", - "code":"51", + "code":"57", "des":"This SELECT command is used to query data in an OpenTSDB table.If no metric exists in OpenTSDB, an error will be reported when the corresponding DLI table is queried.If t", "doc_type":"sqlreference", "kw":"Querying an OpenTSDB Table,Creating a Datasource Connection with an OpenTSDB Table,SQL Syntax Refere", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Querying an OpenTSDB Table", "githuburl":"" }, { "uri":"dli_08_0192.html", + "node_id":"dli_08_0192.xml", "product_code":"dli", - "code":"52", + "code":"58", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Creating a Datasource Connection with a DWS table", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Datasource Connection with a DWS table", "githuburl":"" }, { "uri":"dli_08_0193.html", + "node_id":"dli_08_0193.xml", "product_code":"dli", - "code":"53", - "des":"This statement is used to create a DLI table and associate it with an existing DWS table.Before creating a DLI table and associating it with DWS, you need to create a dat", + "code":"59", + "des":"This statement is used to create a DLI table and associate it with an existing DWS table.In Spark cross-source development scenarios, there is a risk of password leakage ", "doc_type":"sqlreference", "kw":"Creating a DLI Table and Associating It with DWS,Creating a Datasource Connection with a DWS table,S", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a DLI Table and Associating It with DWS", "githuburl":"" }, { "uri":"dli_08_0194.html", + "node_id":"dli_08_0194.xml", "product_code":"dli", - "code":"54", + "code":"60", "des":"This statement is used to insert data in a DLI table to the associated DWS table.Insert the SELECT query result into a table.INSERT INTO DLI_TABLE\n SELECT field1,field2.", "doc_type":"sqlreference", "kw":"Inserting Data to the DWS Table,Creating a Datasource Connection with a DWS table,SQL Syntax Referen", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Inserting Data to the DWS Table", "githuburl":"" }, { "uri":"dli_08_0195.html", + "node_id":"dli_08_0195.xml", "product_code":"dli", - "code":"55", + "code":"61", "des":"This statement is used to query data in a DWS table.LIMIT is used to limit the query results. Only INT type is supported by the number parameter.The table to be queried m", "doc_type":"sqlreference", "kw":"Querying the DWS Table,Creating a Datasource Connection with a DWS table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Querying the DWS Table", "githuburl":"" }, { "uri":"dli_08_0196.html", + "node_id":"dli_08_0196.xml", "product_code":"dli", - "code":"56", + "code":"62", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Creating a Datasource Connection with an RDS Table", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Datasource Connection with an RDS Table", "githuburl":"" }, { "uri":"dli_08_0197.html", + "node_id":"dli_08_0197.xml", "product_code":"dli", - "code":"57", - "des":"This statement is used to create a DLI table and associate it with an existing RDS table. This function supports access to the MySQL and PostgreSQL clusters of RDS.Before", + "code":"63", + "des":"This statement is used to create a DLI table and associate it with an existing RDS table. This function supports access to the MySQL and PostgreSQL clusters of RDS.In Spa", "doc_type":"sqlreference", "kw":"Creating a DLI Table and Associating It with RDS,Creating a Datasource Connection with an RDS Table,", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a DLI Table and Associating It with RDS", "githuburl":"" }, { "uri":"dli_08_0198.html", + "node_id":"dli_08_0198.xml", "product_code":"dli", - "code":"58", + "code":"64", "des":"This statement is used to insert data in a DLI table to the associated RDS table.Insert the SELECT query result into a table.INSERT INTO DLI_TABLE\n SELECT field1,field2.", "doc_type":"sqlreference", "kw":"Inserting Data to the RDS Table,Creating a Datasource Connection with an RDS Table,SQL Syntax Refere", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Inserting Data to the RDS Table", "githuburl":"" }, { "uri":"dli_08_0199.html", + "node_id":"dli_08_0199.xml", "product_code":"dli", - "code":"59", + "code":"65", "des":"This statement is used to query data in an RDS table.LIMIT is used to limit the query results. Only INT type is supported by the number parameter.The table to be queried ", "doc_type":"sqlreference", "kw":"Querying the RDS Table,Creating a Datasource Connection with an RDS Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Querying the RDS Table", "githuburl":"" }, { "uri":"dli_08_0200.html", + "node_id":"dli_08_0200.xml", "product_code":"dli", - "code":"60", + "code":"66", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Creating a Datasource Connection with a CSS Table", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Datasource Connection with a CSS Table", "githuburl":"" }, { "uri":"dli_08_0201.html", + "node_id":"dli_08_0201.xml", "product_code":"dli", - "code":"61", - "des":"This statement is used to create a DLI table and associate it with an existing CSS table.Before creating a DLI table and associating it with CSS, you need to create a dat", + "code":"67", + "des":"This statement is used to create a DLI table and associate it with an existing CSS table.In Spark cross-source development scenarios, there is a risk of password leakage ", "doc_type":"sqlreference", "kw":"Creating a DLI Table and Associating It with CSS,Creating a Datasource Connection with a CSS Table,S", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a DLI Table and Associating It with CSS", "githuburl":"" }, { "uri":"dli_08_0202.html", + "node_id":"dli_08_0202.xml", "product_code":"dli", - "code":"62", + "code":"68", "des":"This statement is used to insert data in a DLI table to the associated CSS table.Insert the SELECT query result into a table.INSERT INTO DLI_TABLE\n SELECT field1,field2.", "doc_type":"sqlreference", "kw":"Inserting Data to the CSS Table,Creating a Datasource Connection with a CSS Table,SQL Syntax Referen", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Inserting Data to the CSS Table", "githuburl":"" }, { "uri":"dli_08_0203.html", + "node_id":"dli_08_0203.xml", "product_code":"dli", - "code":"63", + "code":"69", "des":"This statement is used to query data in a CSS table.LIMIT is used to limit the query results. Only INT type is supported by the number parameter.The table to be queried m", "doc_type":"sqlreference", "kw":"Querying the CSS Table,Creating a Datasource Connection with a CSS Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Querying the CSS Table", "githuburl":"" }, { "uri":"dli_08_0225.html", + "node_id":"dli_08_0225.xml", "product_code":"dli", - "code":"64", + "code":"70", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Creating a Datasource Connection with a DCS Table", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Datasource Connection with a DCS Table", "githuburl":"" }, { "uri":"dli_08_0226.html", + "node_id":"dli_08_0226.xml", "product_code":"dli", - "code":"65", - "des":"This statement is used to create a DLI table and associate it with an existing DCS key.Before creating a DLI table and associating it with DCS, you need to create a datas", + "code":"71", + "des":"This statement is used to create a DLI table and associate it with an existing DCS key.In Spark cross-source development scenarios, there is a risk of password leakage if", "doc_type":"sqlreference", "kw":"Creating a DLI Table and Associating It with DCS,Creating a Datasource Connection with a DCS Table,S", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a DLI Table and Associating It with DCS", "githuburl":"" }, { "uri":"dli_08_0227.html", + "node_id":"dli_08_0227.xml", "product_code":"dli", - "code":"66", + "code":"72", "des":"This statement is used to insert data in a DLI table to the DCS key.Insert the SELECT query result into a table.INSERT INTO DLI_TABLE\n SELECT field1,field2...\n [FROM DL", "doc_type":"sqlreference", "kw":"Inserting Data to a DCS Table,Creating a Datasource Connection with a DCS Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Inserting Data to a DCS Table", "githuburl":"" }, { "uri":"dli_08_0228.html", + "node_id":"dli_08_0228.xml", "product_code":"dli", - "code":"67", + "code":"73", "des":"This statement is used to query data in a DCS table.LIMIT is used to limit the query results. Only INT type is supported by the number parameter.Query data in the test_re", "doc_type":"sqlreference", "kw":"Querying the DCS Table,Creating a Datasource Connection with a DCS Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Querying the DCS Table", "githuburl":"" }, { "uri":"dli_08_0229.html", + "node_id":"dli_08_0229.xml", "product_code":"dli", - "code":"68", + "code":"74", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Creating a Datasource Connection with a DDS Table", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Datasource Connection with a DDS Table", "githuburl":"" }, { "uri":"dli_08_0230.html", + "node_id":"dli_08_0230.xml", "product_code":"dli", - "code":"69", - "des":"This statement is used to create a DLI table and associate it with an existing DDS collection.Before creating a DLI table and associating it with DDS, you need to create ", + "code":"75", + "des":"This statement is used to create a DLI table and associate it with an existing DDS collection.In Spark cross-source development scenarios, there is a risk of password lea", "doc_type":"sqlreference", "kw":"Creating a DLI Table and Associating It with DDS,Creating a Datasource Connection with a DDS Table,S", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a DLI Table and Associating It with DDS", "githuburl":"" }, { "uri":"dli_08_0231.html", + "node_id":"dli_08_0231.xml", "product_code":"dli", - "code":"70", + "code":"76", "des":"This statement is used to insert data in a DLI table to the associated DDS table.Insert the SELECT query result into a table.INSERT INTO DLI_TABLE\n SELECT field1,field2.", "doc_type":"sqlreference", "kw":"Inserting Data to the DDS Table,Creating a Datasource Connection with a DDS Table,SQL Syntax Referen", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Inserting Data to the DDS Table", "githuburl":"" }, { "uri":"dli_08_0232.html", + "node_id":"dli_08_0232.xml", "product_code":"dli", - "code":"71", + "code":"77", "des":"This statement is used to query data in a DDS table.LIMIT is used to limit the query results. Only INT type is supported by the number parameter.If schema information is ", "doc_type":"sqlreference", "kw":"Querying the DDS Table,Creating a Datasource Connection with a DDS Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Querying the DDS Table", "githuburl":"" }, { - "uri":"dli_08_0129.html", + "uri":"dli_08_0460.html", + "node_id":"dli_08_0460.xml", "product_code":"dli", - "code":"72", + "code":"78", + "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", + "doc_type":"sqlreference", + "kw":"Creating a Datasource Connection with an Oracle Table", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Creating a Datasource Connection with an Oracle Table", + "githuburl":"" + }, + { + "uri":"dli_08_0461.html", + "node_id":"dli_08_0461.xml", + "product_code":"dli", + "code":"79", + "des":"This statement is used to create a DLI table and associate it with an existing Oracle table.Before creating a DLI table and associating it with Oracle, you need to create", + "doc_type":"sqlreference", + "kw":"Creating a DLI Table and Associating It with Oracle,Creating a Datasource Connection with an Oracle ", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Creating a DLI Table and Associating It with Oracle", + "githuburl":"" + }, + { + "uri":"dli_08_0462.html", + "node_id":"dli_08_0462.xml", + "product_code":"dli", + "code":"80", + "des":"This statement is used to insert data into an associated Oracle table.Insert the SELECT query result into a table.INSERT INTO DLI_TABLE\n SELECT field1,field2...\n [FROM ", + "doc_type":"sqlreference", + "kw":"Inserting Data to an Oracle Table,Creating a Datasource Connection with an Oracle Table,SQL Syntax R", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Inserting Data to an Oracle Table", + "githuburl":"" + }, + { + "uri":"dli_08_0463.html", + "node_id":"dli_08_0463.xml", + "product_code":"dli", + "code":"81", + "des":"This statement is used to query data in an Oracle table.LIMIT is used to limit the query results. Only INT type is supported by the number parameter.If schema information", + "doc_type":"sqlreference", + "kw":"Querying an Oracle Table,Creating a Datasource Connection with an Oracle Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Querying an Oracle Table", + "githuburl":"" + }, + { + "uri":"dli_08_0129.html", + "node_id":"dli_08_0129.xml", + "product_code":"dli", + "code":"82", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Views", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Views", "githuburl":"" }, { "uri":"dli_08_0130.html", + "node_id":"dli_08_0130.xml", "product_code":"dli", - "code":"73", + "code":"83", "des":"This statement is used to create views.CREATE VIEW: creates views based on the given select statement. The result of the select statement will not be written into the dis", "doc_type":"sqlreference", "kw":"Creating a View,Views,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a View", "githuburl":"" }, { "uri":"dli_08_0131.html", + "node_id":"dli_08_0131.xml", "product_code":"dli", - "code":"74", + "code":"84", "des":"This statement is used to delete views.DROP: Deletes the metadata of a specified view. Although views and tables have many common points, the DROP TABLE statement cannot ", "doc_type":"sqlreference", "kw":"Deleting a View,Views,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Deleting a View", "githuburl":"" }, { "uri":"dli_08_0138.html", + "node_id":"dli_08_0138.xml", "product_code":"dli", - "code":"75", + "code":"85", "des":"This statement returns the logical plan and physical execution plan for the SQL statement.EXTENDED: After this keyword is specified, the logical and physical plans are ou", "doc_type":"sqlreference", "kw":"Viewing the Execution Plan,Spark SQL Syntax Reference,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Viewing the Execution Plan", "githuburl":"" }, { "uri":"dli_08_0139.html", + "node_id":"dli_08_0139.xml", "product_code":"dli", - "code":"76", + "code":"86", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Data Permissions Management", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Data Permissions Management", "githuburl":"" }, { "uri":"dli_08_0140.html", + "node_id":"dli_08_0140.xml", "product_code":"dli", - "code":"77", + "code":"87", "des":"Table 1 describes the SQL statement permission matrix in DLI in terms of permissions on databases, tables, and roles.For privilege granting or revocation on databases and", "doc_type":"sqlreference", "kw":"Data Permissions List,Data Permissions Management,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Data Permissions List", "githuburl":"" }, { "uri":"dli_08_0141.html", + "node_id":"dli_08_0141.xml", "product_code":"dli", - "code":"78", + "code":"88", "des":"This statement is used to create a role in the current database or a specified database.Only users with the CREATE_ROLE permission on the database can create roles. For e", "doc_type":"sqlreference", "kw":"Creating a Role,Data Permissions Management,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Role", "githuburl":"" }, { "uri":"dli_08_0148.html", + "node_id":"dli_08_0148.xml", "product_code":"dli", - "code":"79", + "code":"89", "des":"This statement is used to delete a role in the current database or a specified database.NoneThe role_name to be deleted must exist in the current database or the specifie", "doc_type":"sqlreference", "kw":"Deleting a Role,Data Permissions Management,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Deleting a Role", "githuburl":"" }, { "uri":"dli_08_0142.html", + "node_id":"dli_08_0142.xml", "product_code":"dli", - "code":"80", + "code":"90", "des":"This statement is used to bind a user with a role.NoneThe role_name and username must exist. Otherwise, an error will be reported.", "doc_type":"sqlreference", "kw":"Binding a Role,Data Permissions Management,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Binding a Role", "githuburl":"" }, { "uri":"dli_08_0147.html", + "node_id":"dli_08_0147.xml", "product_code":"dli", - "code":"81", + "code":"91", "des":"This statement is used to unbind the user with the role.Nonerole_name and user_name must exist and user_name has been bound to role_name.To unbind the user_name1 from rol", "doc_type":"sqlreference", "kw":"Unbinding a Role,Data Permissions Management,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Unbinding a Role", "githuburl":"" }, { "uri":"dli_08_0143.html", + "node_id":"dli_08_0143.xml", "product_code":"dli", - "code":"82", + "code":"92", "des":"This statement is used to display all roles or roles bound to the user_name in the current database.ALL: Displays all roles.Keywords ALL and user_name cannot coexist.To d", "doc_type":"sqlreference", "kw":"Displaying a Role,Data Permissions Management,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Displaying a Role", "githuburl":"" }, { "uri":"dli_08_0144.html", + "node_id":"dli_08_0144.xml", "product_code":"dli", - "code":"83", + "code":"93", "des":"This statement is used to grant permissions to a user or role.ROLE: The subsequent role_name must be a role.USER: The subsequent user_name must be a user.The privilege mu", "doc_type":"sqlreference", "kw":"Granting a Permission,Data Permissions Management,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Granting a Permission", "githuburl":"" }, { "uri":"dli_08_0146.html", + "node_id":"dli_08_0146.xml", "product_code":"dli", - "code":"84", + "code":"94", "des":"This statement is used to revoke permissions granted to a user or role.ROLE: The subsequent role_name must be a role.USER: The subsequent user_name must be a user.The pri", "doc_type":"sqlreference", "kw":"Revoking a Permission,Data Permissions Management,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Revoking a Permission", "githuburl":"" }, { "uri":"dli_08_0145.html", + "node_id":"dli_08_0145.xml", "product_code":"dli", - "code":"85", - "des":"This statement is used to show the permissions granted to a user or role in the resource.ROLE: The subsequent role_name must be a role.USER: The subsequent user_name must", + "code":"95", + "des":"This statement is used to show the permissions granted to a user on a resource.USER: The subsequent user_name must be a user.The resource can be a queue, database, table,", "doc_type":"sqlreference", - "kw":"Displaying the Granted Permissions,Data Permissions Management,SQL Syntax Reference", - "title":"Displaying the Granted Permissions", + "kw":"Showing Granted Permissions,Data Permissions Management,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Showing Granted Permissions", "githuburl":"" }, { "uri":"dli_08_0149.html", + "node_id":"dli_08_0149.xml", "product_code":"dli", - "code":"86", + "code":"96", "des":"This statement is used to display the binding relationship between roles and a user in the current database.NoneThe ROLE variable must exist.", "doc_type":"sqlreference", "kw":"Displaying the Binding Relationship Between All Roles and Users,Data Permissions Management,SQL Synt", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Displaying the Binding Relationship Between All Roles and Users", "githuburl":"" }, { "uri":"dli_08_0056.html", + "node_id":"dli_08_0056.xml", "product_code":"dli", - "code":"87", + "code":"97", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Data Types", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Data Types", "githuburl":"" }, { "uri":"dli_08_0057.html", + "node_id":"dli_08_0057.xml", "product_code":"dli", - "code":"88", + "code":"98", "des":"Data type is a basic attribute of data. It is used to distinguish different types of data. Different data types occupy different storage space and support different opera", "doc_type":"sqlreference", "kw":"Overview,Data Types,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Overview", "githuburl":"" }, { "uri":"dli_08_0058.html", + "node_id":"dli_08_0058.xml", "product_code":"dli", - "code":"89", + "code":"99", "des":"Table 1 lists the primitive data types supported by DLI.VARCHAR and CHAR data is stored in STRING type on DLI. Therefore, the string that exceeds the specified length wil", "doc_type":"sqlreference", "kw":"Primitive Data Types,Data Types,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Primitive Data Types", "githuburl":"" }, { "uri":"dli_08_0059.html", + "node_id":"dli_08_0059.xml", "product_code":"dli", - "code":"90", + "code":"100", "des":"Spark SQL supports complex data types, as shown in Table 1.When a table containing fields of the complex data type is created, the storage format of this table cannot be ", "doc_type":"sqlreference", "kw":"Complex Data Types,Data Types,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Complex Data Types", "githuburl":"" }, { "uri":"dli_08_0282.html", + "node_id":"dli_08_0282.xml", "product_code":"dli", - "code":"91", + "code":"101", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"User-Defined Functions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"User-Defined Functions", "githuburl":"" }, { "uri":"dli_08_0283.html", + "node_id":"dli_08_0283.xml", "product_code":"dli", - "code":"92", - "des":"DLI allows you to create and use user-defined functions (UDF) and user-defined table functions (UDTF) in Spark jobs.If a function with the same name exists in the databas", + "code":"102", + "des":"DLI allows you to create and use user-defined functions (UDF) and user-defined table functions (UDTF) in Spark jobs.OrIf a function with the same name exists in the datab", "doc_type":"sqlreference", "kw":"Creating a Function,User-Defined Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Function", "githuburl":"" }, { "uri":"dli_08_0284.html", + "node_id":"dli_08_0284.xml", "product_code":"dli", - "code":"93", + "code":"103", "des":"This statement is used to delete functions.TEMPORARY: Indicates whether the function to be deleted is a temporary function.IF EXISTS: Used when the function to be deleted", "doc_type":"sqlreference", "kw":"Deleting a Function,User-Defined Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Deleting a Function", "githuburl":"" }, { "uri":"dli_08_0281.html", + "node_id":"dli_08_0281.xml", "product_code":"dli", - "code":"94", + "code":"104", "des":"Displays information about a specified function.EXTENDED: displays extended usage information.The metadata (implementation class and usage) of an existing function is ret", "doc_type":"sqlreference", "kw":"Displaying Function Details,User-Defined Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Displaying Function Details", "githuburl":"" }, { "uri":"dli_08_0285.html", + "node_id":"dli_08_0285.xml", "product_code":"dli", - "code":"95", + "code":"105", "des":"View all functions in the current project.In the preceding statement, regex is a regular expression. For details about its parameters, see Table 1.For details about other", "doc_type":"sqlreference", "kw":"Displaying All Functions,User-Defined Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Displaying All Functions", "githuburl":"" }, { "uri":"dli_08_0064.html", + "node_id":"dli_08_0064.xml", "product_code":"dli", - "code":"96", + "code":"106", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Built-in Functions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Built-in Functions", "githuburl":"" }, { - "uri":"dli_08_0065.html", + "uri":"dli_08_0471.html", + "node_id":"dli_08_0471.xml", "product_code":"dli", - "code":"97", - "des":"Table 1 lists the mathematical functions supported in DLI.", + "code":"107", + "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", - "kw":"Mathematical Functions,Built-in Functions,SQL Syntax Reference", - "title":"Mathematical Functions", - "githuburl":"" - }, - { - "uri":"dli_08_0066.html", - "product_code":"dli", - "code":"98", - "des":"Table 1 lists the date functions supported in DLI.", - "doc_type":"sqlreference", - "kw":"Date Functions,Built-in Functions,SQL Syntax Reference", + "kw":"Date Functions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Date Functions", "githuburl":"" }, { - "uri":"dli_08_0067.html", + "uri":"dli_08_0066.html", + "node_id":"dli_08_0066.xml", "product_code":"dli", - "code":"99", - "des":"Table 1 lists the string functions supported by DLI.", + "code":"108", + "des":"Table 1 lists the date functions supported by DLI.", "doc_type":"sqlreference", - "kw":"String Functions,Built-in Functions,SQL Syntax Reference", + "kw":"Overview,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Overview", + "githuburl":"" + }, + { + "uri":"dli_spark_add_months.html", + "node_id":"dli_spark_add_months.xml", + "product_code":"dli", + "code":"109", + "des":"This function is used to calculate the date after a date value is increased by a specified number of months. That is, it calculates the data that is num_months after star", + "doc_type":"sqlreference", + "kw":"add_months,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"add_months", + "githuburl":"" + }, + { + "uri":"dli_spark_current_date.html", + "node_id":"dli_spark_current_date.xml", + "product_code":"dli", + "code":"110", + "des":"This function is used to return the current date, in the yyyy-mm-dd format.Similar function: getdate. The getdate function is used to return the current system time, in t", + "doc_type":"sqlreference", + "kw":"current_date,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"current_date", + "githuburl":"" + }, + { + "uri":"dli_spark_current_timestamp.html", + "node_id":"dli_spark_current_timestamp.xml", + "product_code":"dli", + "code":"111", + "des":"This function is used to return the current timestamp.NoneThe return value is of the TIMESTAMP type.The value 1692002816300 is returned.", + "doc_type":"sqlreference", + "kw":"current_timestamp,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"current_timestamp", + "githuburl":"" + }, + { + "uri":"dli_spark_date_add.html", + "node_id":"dli_spark_date_add.xml", + "product_code":"dli", + "code":"112", + "des":"This function is used to calculate the number of days in which start_date is increased by days.To obtain the date with a specified change range based on the current date,", + "doc_type":"sqlreference", + "kw":"date_add,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"date_add", + "githuburl":"" + }, + { + "uri":"dli_spark_dateadd.html", + "node_id":"dli_spark_dateadd.xml", + "product_code":"dli", + "code":"113", + "des":"This function is used to change a date based on datepart and delta.To obtain the date with a specified change range based on the current date, use this function together ", + "doc_type":"sqlreference", + "kw":"dateadd,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"dateadd", + "githuburl":"" + }, + { + "uri":"dli_spark_date_sub.html", + "node_id":"dli_spark_date_sub.xml", + "product_code":"dli", + "code":"114", + "des":"This function is used to calculate the number of days in which start_date is subtracted by days.To obtain the date with a specified change range based on the current date", + "doc_type":"sqlreference", + "kw":"date_sub,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"date_sub", + "githuburl":"" + }, + { + "uri":"dli_spark_date_format.html", + "node_id":"dli_spark_date_format.xml", + "product_code":"dli", + "code":"115", + "des":"This function is used to convert a date into a string based on the format specified by format.The return value is of the STRING type.If the value of date is not of the DA", + "doc_type":"sqlreference", + "kw":"date_format,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"date_format", + "githuburl":"" + }, + { + "uri":"dli_spark_datediff.html", + "node_id":"dli_spark_datediff.xml", + "product_code":"dli", + "code":"116", + "des":"This function is used to calculate the difference between date1 and date2.Similar function: datediff1. The datediff1 function is used to calculate the difference between ", + "doc_type":"sqlreference", + "kw":"datediff,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"datediff", + "githuburl":"" + }, + { + "uri":"dli_spark_datediff1.html", + "node_id":"dli_spark_datediff1.xml", + "product_code":"dli", + "code":"117", + "des":"This function is used to calculate the difference between date1 and date2 and return the difference in a specified datepart.Similar function: datediff. The datediff funct", + "doc_type":"sqlreference", + "kw":"datediff1,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"datediff1", + "githuburl":"" + }, + { + "uri":"dli_spark_datepart.html", + "node_id":"dli_spark_datepart.xml", + "product_code":"dli", + "code":"118", + "des":"This function is used to calculate the value that meets the specified datepart in date.The return value is of the BIGINT type.If the value of date is not of the DATE or S", + "doc_type":"sqlreference", + "kw":"datepart,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"datepart", + "githuburl":"" + }, + { + "uri":"dli_spark_datetrunc.html", + "node_id":"dli_spark_datetrunc.xml", + "product_code":"dli", + "code":"119", + "des":"This function is used to calculate the date otained through the truncation of a specified date based on a specified datepart.It truncates the date before the specified da", + "doc_type":"sqlreference", + "kw":"datetrunc,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"datetrunc", + "githuburl":"" + }, + { + "uri":"dli_spark_daydayofmonth.html", + "node_id":"dli_spark_daydayofmonth.xml", + "product_code":"dli", + "code":"120", + "des":"This function is used to return the day of a specified date.The return value is of the INT type.If the value of date is not of the DATE or STRING type, the error message ", + "doc_type":"sqlreference", + "kw":"day/dayofmonth,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"day/dayofmonth", + "githuburl":"" + }, + { + "uri":"dli_spark_from_unixtime.html", + "node_id":"dli_spark_from_unixtime.xml", + "product_code":"dli", + "code":"121", + "des":"This function is used to convert a timestamp represented by a numeric UNIX value to a date value.The return value is of the STRING type, in the yyyy-mm-dd hh:mi:ss format", + "doc_type":"sqlreference", + "kw":"from_unixtime,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"from_unixtime", + "githuburl":"" + }, + { + "uri":"dli_spark_from_utc_timestamp.html", + "node_id":"dli_spark_from_utc_timestamp.xml", + "product_code":"dli", + "code":"122", + "des":"This function is used to convert a UTC timestamp to a UNIX timestamp in a given time zone.The return value is of the TIMESTAMP type.If the value of timestamp is not of th", + "doc_type":"sqlreference", + "kw":"from_utc_timestamp,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"from_utc_timestamp", + "githuburl":"" + }, + { + "uri":"dli_spark_getdate.html", + "node_id":"dli_spark_getdate.xml", + "product_code":"dli", + "code":"123", + "des":"This function is used to return the current system time, in the yyyy-mm-dd hh:mi:ss format.Similar function: current_date. The current_date function is used to return the", + "doc_type":"sqlreference", + "kw":"getdate,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"getdate", + "githuburl":"" + }, + { + "uri":"dli_spark_hour.html", + "node_id":"dli_spark_hour.xml", + "product_code":"dli", + "code":"124", + "des":"This function is used to return the hour (from 0 to 23) of a specified time.The return value is of the INT type.If the value of date is not of the DATE or STRING type, th", + "doc_type":"sqlreference", + "kw":"hour,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"hour", + "githuburl":"" + }, + { + "uri":"dli_spark_isdate.html", + "node_id":"dli_spark_isdate.xml", + "product_code":"dli", + "code":"125", + "des":"This function is used to determine whether a date string can be converted into a date value based on a specified format.The return value is of the BOOLEAN type.If the val", + "doc_type":"sqlreference", + "kw":"isdate,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"isdate", + "githuburl":"" + }, + { + "uri":"dli_spark_last_day.html", + "node_id":"dli_spark_last_day.xml", + "product_code":"dli", + "code":"126", + "des":"This function is used to return the last day of the month a date belongs to.Similar function: lastday. The lastday function is used to return the last day of the month a ", + "doc_type":"sqlreference", + "kw":"last_day,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"last_day", + "githuburl":"" + }, + { + "uri":"dli_spark_lastday.html", + "node_id":"dli_spark_lastday.xml", + "product_code":"dli", + "code":"127", + "des":"This function is used to return the last day of the month a date belongs to. The hour, minute, and second part is 00:00:00.Similar function: last_day. The last_day functi", + "doc_type":"sqlreference", + "kw":"lastday,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"lastday", + "githuburl":"" + }, + { + "uri":"dli_spark_minute.html", + "node_id":"dli_spark_minute.xml", + "product_code":"dli", + "code":"128", + "des":"This function is used to return the minute (from 0 to 59) of a specified time.The return value is of the INT type.If the value of date is not of the DATE or STRING type, ", + "doc_type":"sqlreference", + "kw":"minute,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"minute", + "githuburl":"" + }, + { + "uri":"dli_spark_month.html", + "node_id":"dli_spark_month.xml", + "product_code":"dli", + "code":"129", + "des":"This function is used to return the month (from January to December) of a specified time.The return value is of the INT type.If the value of date is not of the DATE or ST", + "doc_type":"sqlreference", + "kw":"month,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"month", + "githuburl":"" + }, + { + "uri":"dli_spark_months_between.html", + "node_id":"dli_spark_months_between.xml", + "product_code":"dli", + "code":"130", + "des":"This function returns the month difference between date1 and date2.The return value is of the DOUBLE type.If the values of date1 and date2 are not of the DATE or STRING t", + "doc_type":"sqlreference", + "kw":"months_between,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"months_between", + "githuburl":"" + }, + { + "uri":"dli_spark_next_day.html", + "node_id":"dli_spark_next_day.xml", + "product_code":"dli", + "code":"131", + "des":"This function is used to return the date closest to day_of_week after start_date.The return value is of the DATE type, in the yyyy-mm-dd format.If the value of start_date", + "doc_type":"sqlreference", + "kw":"next_day,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"next_day", + "githuburl":"" + }, + { + "uri":"dli_spark_quarter.html", + "node_id":"dli_spark_quarter.xml", + "product_code":"dli", + "code":"132", + "des":"This function is used to return the quarter of a date. The value ranges from 1 to 4.The return value is of the INT type.If the value of date is not of the DATE or STRING ", + "doc_type":"sqlreference", + "kw":"quarter,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"quarter", + "githuburl":"" + }, + { + "uri":"dli_spark_second.html", + "node_id":"dli_spark_second.xml", + "product_code":"dli", + "code":"133", + "des":"This function is used to return the second (from 0 to 59) of a specified time.The return value is of the INT type.If the value of date is not of the DATE or STRING type, ", + "doc_type":"sqlreference", + "kw":"second,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"second", + "githuburl":"" + }, + { + "uri":"dli_spark_to_char.html", + "node_id":"dli_spark_to_char.xml", + "product_code":"dli", + "code":"134", + "des":"This function is used to convert a date into a string in a specified format.The return value is of the STRING type.If the value of date is not of the DATE or STRING type,", + "doc_type":"sqlreference", + "kw":"to_char,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"to_char", + "githuburl":"" + }, + { + "uri":"dli_spark_to_date.html", + "node_id":"dli_spark_to_date.xml", + "product_code":"dli", + "code":"135", + "des":"This function is used to return the year, month, and day in a time.Similar function: to_date1. The to_date1 function is used to convert a string in a specified format to ", + "doc_type":"sqlreference", + "kw":"to_date,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"to_date", + "githuburl":"" + }, + { + "uri":"dli_spark_to_date1.html", + "node_id":"dli_spark_to_date1.xml", + "product_code":"dli", + "code":"136", + "des":"This function is used to convert a string in a specified format to a date value.Similar function: to_date. The to_date function is used to return the year, month, and day", + "doc_type":"sqlreference", + "kw":"to_date1,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"to_date1", + "githuburl":"" + }, + { + "uri":"dli_spark_to_utc_timestamp.html", + "node_id":"dli_spark_to_utc_timestamp.xml", + "product_code":"dli", + "code":"137", + "des":"This function is used to convert a timestamp in a given time zone to a UTC timestamp.The return value is of the BIGINT type.If the value of timestamp is not of the DATE o", + "doc_type":"sqlreference", + "kw":"to_utc_timestamp,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"to_utc_timestamp", + "githuburl":"" + }, + { + "uri":"dli_spark_trunc.html", + "node_id":"dli_spark_trunc.xml", + "product_code":"dli", + "code":"138", + "des":"This function is used to reset a date to a specific format.Resetting means returning to default values, where the default values for year, month, and day are 01, and the ", + "doc_type":"sqlreference", + "kw":"trunc,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"trunc", + "githuburl":"" + }, + { + "uri":"dli_spark_unix_timestamp.html", + "node_id":"dli_spark_unix_timestamp.xml", + "product_code":"dli", + "code":"139", + "des":"This function is used to convert a date value to a numeric date value in UNIX format.The function returns the first ten digits of the timestamp in normal UNIX format.The ", + "doc_type":"sqlreference", + "kw":"unix_timestamp,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"unix_timestamp", + "githuburl":"" + }, + { + "uri":"dli_spark_weekday.html", + "node_id":"dli_spark_weekday.xml", + "product_code":"dli", + "code":"140", + "des":"This function is used to return the day of the current week.The return value is of the INT type.If Monday is used as the first day of a week, the value 0 is returned. For", + "doc_type":"sqlreference", + "kw":"weekday,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"weekday", + "githuburl":"" + }, + { + "uri":"dli_spark_weekofyear.html", + "node_id":"dli_spark_weekofyear.xml", + "product_code":"dli", + "code":"141", + "des":"This function is used to return the week number (from 0 to 53) of a specified date.The return value is of the INT type.If the value of date is not of the DATE or STRING t", + "doc_type":"sqlreference", + "kw":"weekofyear,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"weekofyear", + "githuburl":"" + }, + { + "uri":"dli_spark_year.html", + "node_id":"dli_spark_year.xml", + "product_code":"dli", + "code":"142", + "des":"This function is used to return the year of a specified date.The return value is of the INT type.If the value of date is not of the DATE or STRING type, the error message", + "doc_type":"sqlreference", + "kw":"year,Date Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"year", + "githuburl":"" + }, + { + "uri":"dli_08_0472.html", + "node_id":"dli_08_0472.xml", + "product_code":"dli", + "code":"143", + "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", + "doc_type":"sqlreference", + "kw":"String Functions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"String Functions", "githuburl":"" }, { - "uri":"dli_08_0068.html", + "uri":"dli_08_0067.html", + "node_id":"dli_08_0067.xml", "product_code":"dli", - "code":"100", - "des":"An aggregate function performs a calculation operation on a set of input values and returns a value. For example, the COUNT function counts the number of rows retrieved b", + "code":"144", + "des":"Table 1 lists the string functions supported by DLI.", "doc_type":"sqlreference", - "kw":"Aggregate Functions,Built-in Functions,SQL Syntax Reference", + "kw":"Overview,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Overview", + "githuburl":"" + }, + { + "uri":"dli_spark_ascii.html", + "node_id":"dli_spark_ascii.xml", + "product_code":"dli", + "code":"145", + "des":"This function is used to return the ASCII code of the first character in str.The return value is of the BIGINT type.If the value of str is not of the STRING, BIGINT, DOUB", + "doc_type":"sqlreference", + "kw":"ascii,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"ascii", + "githuburl":"" + }, + { + "uri":"dli_spark_concat.html", + "node_id":"dli_spark_concat.xml", + "product_code":"dli", + "code":"146", + "des":"This function is used to concatenate arrays or strings.If multiple arrays are used as the input, all elements in the arrays are connected to generate a new array.If multi", + "doc_type":"sqlreference", + "kw":"concat,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"concat", + "githuburl":"" + }, + { + "uri":"dli_spark_concat_ws.html", + "node_id":"dli_spark_concat_ws.xml", + "product_code":"dli", + "code":"147", + "des":"This function is used to return a string concatenated from multiple input strings that are separated by specified separators.orReturns the result of joining all the strin", + "doc_type":"sqlreference", + "kw":"concat_ws,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"concat_ws", + "githuburl":"" + }, + { + "uri":"dli_spark_char_matchcount.html", + "node_id":"dli_spark_char_matchcount.xml", + "product_code":"dli", + "code":"148", + "des":"This parameter is used to return the number of characters in str1 that appear in str2.The return value is of the BIGINT type.If the value of str1 or str2 is NULL, NULL is", + "doc_type":"sqlreference", + "kw":"char_matchcount,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"char_matchcount", + "githuburl":"" + }, + { + "uri":"dli_spark_encode.html", + "node_id":"dli_spark_encode.xml", + "product_code":"dli", + "code":"149", + "des":"This function is used to encode str in charset format.encode(string , string )The return value is of the BINARY type.If the value of str or charset is NULL,", + "doc_type":"sqlreference", + "kw":"encode,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"encode", + "githuburl":"" + }, + { + "uri":"dli_spark_find_in_set.html", + "node_id":"dli_spark_find_in_set.xml", + "product_code":"dli", + "code":"150", + "des":"This function is used to return the position (stating from 1) of str1 in str2 separated by commas (,).The return value is of the BIGINT type.If str1 cannot be matched in ", + "doc_type":"sqlreference", + "kw":"find_in_set,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"find_in_set", + "githuburl":"" + }, + { + "uri":"dli_spark_get_json_object.html", + "node_id":"dli_spark_get_json_object.xml", + "product_code":"dli", + "code":"151", + "des":"This function is used to parse the JSON object in a specified JSON path. The function will return NULL if the JSON object is invalid.The return value is of the STRING typ", + "doc_type":"sqlreference", + "kw":"get_json_object,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"get_json_object", + "githuburl":"" + }, + { + "uri":"dli_spark_instr.html", + "node_id":"dli_spark_instr.xml", + "product_code":"dli", + "code":"152", + "des":"This function is used to return the index of substr that appears earliest in str.It returns NULL if either of the arguments are NULL and returns 0 if substr does not exis", + "doc_type":"sqlreference", + "kw":"instr,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"instr", + "githuburl":"" + }, + { + "uri":"dli_spark_instr1.html", + "node_id":"dli_spark_instr1.xml", + "product_code":"dli", + "code":"153", + "des":"This function is used to return the position of substring str2 in string str1.Similar function: instr. The instr function is used to return the index of substr that appea", + "doc_type":"sqlreference", + "kw":"instr1,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"instr1", + "githuburl":"" + }, + { + "uri":"dli_spark_initcap.html", + "node_id":"dli_spark_initcap.xml", + "product_code":"dli", + "code":"154", + "des":"This function is used to convert the first letter of each word of a string to upper case and all other letters to lower case.The return value is of the STRING type. In th", + "doc_type":"sqlreference", + "kw":"initcap,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"initcap", + "githuburl":"" + }, + { + "uri":"dli_spark_keyvalue.html", + "node_id":"dli_spark_keyvalue.xml", + "product_code":"dli", + "code":"155", + "des":"This function is used to split str by split1, convert each group into a key-value pair by split2, and return the value corresponding to the key.The return value is of the", + "doc_type":"sqlreference", + "kw":"keyvalue,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"keyvalue", + "githuburl":"" + }, + { + "uri":"dli_spark_length.html", + "node_id":"dli_spark_length.xml", + "product_code":"dli", + "code":"156", + "des":"This function is used to return the length of a string.Similar function: lengthb. The lengthb function is used to return the length of string str in bytes and return a va", + "doc_type":"sqlreference", + "kw":"length,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"length", + "githuburl":"" + }, + { + "uri":"dli_spark_lengthb.html", + "node_id":"dli_spark_lengthb.xml", + "product_code":"dli", + "code":"157", + "des":"This function is used to return the length of a specified string in bytes.Similar function: length. The length function is used to return the length of a string and retur", + "doc_type":"sqlreference", + "kw":"lengthb,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"lengthb", + "githuburl":"" + }, + { + "uri":"dli_spark_levenshtein.html", + "node_id":"dli_spark_levenshtein.xml", + "product_code":"dli", + "code":"158", + "des":"This function is used to returns the Levenshtein distance between two strings, for example, levenshtein('kitten','sitting') = 3.Levenshtein distance is a type of edit dis", + "doc_type":"sqlreference", + "kw":"levenshtein,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"levenshtein", + "githuburl":"" + }, + { + "uri":"dli_spark_locate.html", + "node_id":"dli_spark_locate.xml", + "product_code":"dli", + "code":"159", + "des":"This function is used to return the position of substr in str. You can specify the starting position of your search using \"start_pos,\" which starts from 1.The return valu", + "doc_type":"sqlreference", + "kw":"locate,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"locate", + "githuburl":"" + }, + { + "uri":"dli_spark_lower_lcase.html", + "node_id":"dli_spark_lower_lcase.xml", + "product_code":"dli", + "code":"160", + "des":"This function is used to convert all characters of a string to the lower case.The return value is of the STRING type.If the value of the input parameter is not of the STR", + "doc_type":"sqlreference", + "kw":"lower/lcase,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"lower/lcase", + "githuburl":"" + }, + { + "uri":"dli_spark_lpad.html", + "node_id":"dli_spark_lpad.xml", + "product_code":"dli", + "code":"161", + "des":"This function is used to return a string of a specified length. If the length of the given string (str1) is shorter than the specified length (length), the given string i", + "doc_type":"sqlreference", + "kw":"lpad,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"lpad", + "githuburl":"" + }, + { + "uri":"dli_spark_ltrim.html", + "node_id":"dli_spark_ltrim.xml", + "product_code":"dli", + "code":"162", + "des":"This function is used to remove characters from the left of str.If trimChars is not specified, spaces are removed by default.If trimChars is specified, the function remov", + "doc_type":"sqlreference", + "kw":"ltrim,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"ltrim", + "githuburl":"" + }, + { + "uri":"dli_spark_parse_url.html", + "node_id":"dli_spark_parse_url.xml", + "product_code":"dli", + "code":"163", + "des":"This character is used to return the specified part of a given URL. Valid values of partToExtract include HOST, PATH, QUERY, REF, PROTOCOL, AUTHORITY, FILE, and USERINFO.", + "doc_type":"sqlreference", + "kw":"parse_url,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"parse_url", + "githuburl":"" + }, + { + "uri":"dli_spark_printf.html", + "node_id":"dli_spark_printf.xml", + "product_code":"dli", + "code":"164", + "des":"This function is used to print the input in a specific format.The return value is of the STRING type.The value is returned after the parameters that filled in Obj are spe", + "doc_type":"sqlreference", + "kw":"printf,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"printf", + "githuburl":"" + }, + { + "uri":"dli_spark_regexp_count.html", + "node_id":"dli_spark_regexp_count.xml", + "product_code":"dli", + "code":"165", + "des":"This function is used to return the number of substrings that match a specified pattern in the source, starting from the start_position position.The return value is of th", + "doc_type":"sqlreference", + "kw":"regexp_count,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"regexp_count", + "githuburl":"" + }, + { + "uri":"dli_spark_regexp_extract.html", + "node_id":"dli_spark_regexp_extract.xml", + "product_code":"dli", + "code":"166", + "des":"This function is used to match the string source based on the pattern grouping rule and return the string content that matches groupid.regexp_extract(string , str", + "doc_type":"sqlreference", + "kw":"regexp_extract,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"regexp_extract", + "githuburl":"" + }, + { + "uri":"dli_spark_replace.html", + "node_id":"dli_spark_replace.xml", + "product_code":"dli", + "code":"167", + "des":"This function is used to replace the part in a specified string that is the same as the string old with the string new and return the result.If the string has no same cha", + "doc_type":"sqlreference", + "kw":"replace,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"replace", + "githuburl":"" + }, + { + "uri":"dli_spark_regexp_replace.html", + "node_id":"dli_spark_regexp_replace.xml", + "product_code":"dli", + "code":"168", + "des":"This function has slight variations in its functionality depending on the version of Spark being used.For Spark 2.4.5 or earlier: Replaces the substring that matches patt", + "doc_type":"sqlreference", + "kw":"regexp_replace,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"regexp_replace", + "githuburl":"" + }, + { + "uri":"dli_spark_regexp_replace1.html", + "node_id":"dli_spark_regexp_replace1.xml", + "product_code":"dli", + "code":"169", + "des":"This function is used to replace the substring that matches pattern for the occurrence time in the source string with the specified string replace_string and return the r", + "doc_type":"sqlreference", + "kw":"regexp_replace1,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"regexp_replace1", + "githuburl":"" + }, + { + "uri":"dli_spark_regexp_instr.html", + "node_id":"dli_spark_regexp_instr.xml", + "product_code":"dli", + "code":"170", + "des":"This function is used to return the start or end position of the substring that matches a specified pattern for the occurrence time, starting from start_position in the s", + "doc_type":"sqlreference", + "kw":"regexp_instr,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"regexp_instr", + "githuburl":"" + }, + { + "uri":"dli_spark_regexp_substr.html", + "node_id":"dli_spark_regexp_substr.xml", + "product_code":"dli", + "code":"171", + "des":"This function is used to return the substring that matches a specified pattern for the occurrence time, starting from start_position in the string source.The return value", + "doc_type":"sqlreference", + "kw":"regexp_substr,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"regexp_substr", + "githuburl":"" + }, + { + "uri":"dli_spark_repeat.html", + "node_id":"dli_spark_repeat.xml", + "product_code":"dli", + "code":"172", + "des":"This function is used to return the string after str is repeated for n times.The return value is of the STRING type.If the value of str is not of the STRING, BIGINT, DOUB", + "doc_type":"sqlreference", + "kw":"repeat,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"repeat", + "githuburl":"" + }, + { + "uri":"dli_spark_reverse.html", + "node_id":"dli_spark_reverse.xml", + "product_code":"dli", + "code":"173", + "des":"This function is used to return a string in reverse order.The return value is of the STRING type.If the value of str is not of the STRING, BIGINT, DOUBLE, DECIMAL, or DAT", + "doc_type":"sqlreference", + "kw":"reverse,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"reverse", + "githuburl":"" + }, + { + "uri":"dli_spark_rpad.html", + "node_id":"dli_spark_rpad.xml", + "product_code":"dli", + "code":"174", + "des":"This function is used to right pad str1 with str2 to the specified length.The return value is of the STRING type.If the value of length is smaller than the number of digi", + "doc_type":"sqlreference", + "kw":"rpad,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"rpad", + "githuburl":"" + }, + { + "uri":"dli_spark_rtrim.html", + "node_id":"dli_spark_rtrim.xml", + "product_code":"dli", + "code":"175", + "des":"This function is used to remove characters from the right of str.If trimChars is not specified, spaces are removed by default.If trimChars is specified, the function remo", + "doc_type":"sqlreference", + "kw":"rtrim,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"rtrim", + "githuburl":"" + }, + { + "uri":"dli_spark_soundex.html", + "node_id":"dli_spark_soundex.xml", + "product_code":"dli", + "code":"176", + "des":"This function is used to return the soundex string from str, for example, soundex('Miller') = M460.The return value is of the STRING type.If the value of str is NULL, NUL", + "doc_type":"sqlreference", + "kw":"soundex,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"soundex", + "githuburl":"" + }, + { + "uri":"dli_spark_space.html", + "node_id":"dli_spark_space.xml", + "product_code":"dli", + "code":"177", + "des":"This function is used to return a specified number of spaces.The return value is of the STRING type.If the value of n is empty, an error is reported.If the value of n is ", + "doc_type":"sqlreference", + "kw":"space,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"space", + "githuburl":"" + }, + { + "uri":"dli_spark_substr_substring.html", + "node_id":"dli_spark_substr_substring.xml", + "product_code":"dli", + "code":"178", + "des":"This function is used to return the substring of str, starting from start_position and with a length of length.orThe return value is of the STRING type.If the value of st", + "doc_type":"sqlreference", + "kw":"substr/substring,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"substr/substring", + "githuburl":"" + }, + { + "uri":"dli_spark_substring_index.html", + "node_id":"dli_spark_substring_index.xml", + "product_code":"dli", + "code":"179", + "des":"This function is used to truncate the string before the count separator of str. If the value of count is positive, the string is truncated from the left. If the value of ", + "doc_type":"sqlreference", + "kw":"substring_index,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"substring_index", + "githuburl":"" + }, + { + "uri":"dli_spark_split_part.html", + "node_id":"dli_spark_split_part.xml", + "product_code":"dli", + "code":"180", + "des":"This function is used to split a specified string based on a specified separator and return a substring from the start to end position.The return value is of the STRING t", + "doc_type":"sqlreference", + "kw":"split_part,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"split_part", + "githuburl":"" + }, + { + "uri":"dli_spark_translate.html", + "node_id":"dli_spark_translate.xml", + "product_code":"dli", + "code":"181", + "des":"This function is used to translate the input string by replacing the characters or string specified by from with the characters or string specified by to.For example, it ", + "doc_type":"sqlreference", + "kw":"translate,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"translate", + "githuburl":"" + }, + { + "uri":"dli_spark_trim.html", + "node_id":"dli_spark_trim.xml", + "product_code":"dli", + "code":"182", + "des":"This function is used to remove characters from the left and right of str.If trimChars is not specified, spaces are removed by default.If trimChars is specified, the func", + "doc_type":"sqlreference", + "kw":"trim,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"trim", + "githuburl":"" + }, + { + "uri":"dli_spark_upper_ucase.html", + "node_id":"dli_spark_upper_ucase.xml", + "product_code":"dli", + "code":"183", + "des":"This function is used to convert all characters of a string to the upper case.orThe return value is of the STRING type.If the value of the input parameter is not of the S", + "doc_type":"sqlreference", + "kw":"upper/ucase,String Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"upper/ucase", + "githuburl":"" + }, + { + "uri":"dli_08_0473.html", + "node_id":"dli_08_0473.xml", + "product_code":"dli", + "code":"184", + "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", + "doc_type":"sqlreference", + "kw":"Mathematical Functions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Mathematical Functions", + "githuburl":"" + }, + { + "uri":"dli_08_0065.html", + "node_id":"dli_08_0065.xml", + "product_code":"dli", + "code":"185", + "des":"Table 1 lists the mathematical functions supported by DLI.", + "doc_type":"sqlreference", + "kw":"Overview,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Overview", + "githuburl":"" + }, + { + "uri":"dli_spark_abs.html", + "node_id":"dli_spark_abs.xml", + "product_code":"dli", + "code":"186", + "des":"This function is used to calculate the absolute value of an input parameter.The return value is of the DOUBLE or INT type.If the value of a is NULL, NULL is returned.The ", + "doc_type":"sqlreference", + "kw":"abs,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"abs", + "githuburl":"" + }, + { + "uri":"dli_spark_aocs.html", + "node_id":"dli_spark_aocs.xml", + "product_code":"dli", + "code":"187", + "des":"This function is used to return the arc cosine value of a given angle a.The return value is of the DOUBLE type. The value ranges from 0 to π.If the value of a is not with", + "doc_type":"sqlreference", + "kw":"acos,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"acos", + "githuburl":"" + }, + { + "uri":"dli_spark_asin.html", + "node_id":"dli_spark_asin.xml", + "product_code":"dli", + "code":"188", + "des":"This function is used to return the arc sine value of a given angle a.The return value is of the DOUBLE type. The value ranges from -π/2 to π/2.If the value of a is not w", + "doc_type":"sqlreference", + "kw":"asin,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"asin", + "githuburl":"" + }, + { + "uri":"dli_spark_atan.html", + "node_id":"dli_spark_atan.xml", + "product_code":"dli", + "code":"189", + "des":"This function is used to return the arc tangent value of a given angle a.The return value is of the DOUBLE type. The value ranges from -π/2 to π/2.If the value of a is no", + "doc_type":"sqlreference", + "kw":"atan,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"atan", + "githuburl":"" + }, + { + "uri":"dli_spark_bin.html", + "node_id":"dli_spark_bin.xml", + "product_code":"dli", + "code":"190", + "des":"This function is used to return the binary format of a.The return value is of the STRING type.If the value of a is NULL, NULL is returned.The value 1 is returned.The valu", + "doc_type":"sqlreference", + "kw":"bin,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"bin", + "githuburl":"" + }, + { + "uri":"dli_spark_bround.html", + "node_id":"dli_spark_bround.xml", + "product_code":"dli", + "code":"191", + "des":"This function is used to return a value that is rounded off to d decimal places.The return value is of the DOUBLE type.If the value of a or d is NULL, NULL is returned.Th", + "doc_type":"sqlreference", + "kw":"bround,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"bround", + "githuburl":"" + }, + { + "uri":"dli_spark_cbrt.html", + "node_id":"dli_spark_cbrt.xml", + "product_code":"dli", + "code":"192", + "des":"This function is used to return the cube root of a.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The value 3 is returned.select cbrt(", + "doc_type":"sqlreference", + "kw":"cbrt,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"cbrt", + "githuburl":"" + }, + { + "uri":"dli_spark_ceil.html", + "node_id":"dli_spark_ceil.xml", + "product_code":"dli", + "code":"193", + "des":"This function is used to round up a to the nearest integer.The return value is of the DECIMAL type.If the value of a is NULL, NULL is returned.The value 2 is returned.The", + "doc_type":"sqlreference", + "kw":"ceil,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"ceil", + "githuburl":"" + }, + { + "uri":"dli_spark_conv.html", + "node_id":"dli_spark_conv.xml", + "product_code":"dli", + "code":"194", + "des":"This function is used to convert a number from from_base to to_base.The return value is of the STRING type.If the value of num, from_base, or to_base is NULL, NULL is ret", + "doc_type":"sqlreference", + "kw":"conv,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"conv", + "githuburl":"" + }, + { + "uri":"dli_spark_cos.html", + "node_id":"dli_spark_cos.xml", + "product_code":"dli", + "code":"195", + "des":"This function is used to calculate the cosine value of a, with input in radians.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The val", + "doc_type":"sqlreference", + "kw":"cos,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"cos", + "githuburl":"" + }, + { + "uri":"dli_spark_cot1.html", + "node_id":"dli_spark_cot1.xml", + "product_code":"dli", + "code":"196", + "des":"This function is used to calculate the cotangent value of a, with input in radians.The return value is of the DOUBLE or DECIMAL type.If the value of a is NULL, NULL is re", + "doc_type":"sqlreference", + "kw":"cot1,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"cot1", + "githuburl":"" + }, + { + "uri":"dli_spark_degress.html", + "node_id":"dli_spark_degress.xml", + "product_code":"dli", + "code":"197", + "des":"This function is used to calculate the angle corresponding to the returned radian.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The v", + "doc_type":"sqlreference", + "kw":"degrees,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"degrees", + "githuburl":"" + }, + { + "uri":"dli_spark_e.html", + "node_id":"dli_spark_e.xml", + "product_code":"dli", + "code":"198", + "des":"This function is used to return the value of e.The return value is of the DOUBLE type.The value 2.718281828459045 is returned.select e();", + "doc_type":"sqlreference", + "kw":"e,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"e", + "githuburl":"" + }, + { + "uri":"dli_spark_exp.html", + "node_id":"dli_spark_exp.xml", + "product_code":"dli", + "code":"199", + "des":"This function is used to return the value of e raised to the power of a.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The value 7.389", + "doc_type":"sqlreference", + "kw":"exp,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"exp", + "githuburl":"" + }, + { + "uri":"dli_spark_factorial.html", + "node_id":"dli_spark_factorial.xml", + "product_code":"dli", + "code":"200", + "des":"This function is used to return the factorial of a.The return value is of the BIGINT type.If the value of a is 0, 1 is returned.If the value of a is NULL or outside the r", + "doc_type":"sqlreference", + "kw":"factorial,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"factorial", + "githuburl":"" + }, + { + "uri":"dli_spark_floor.html", + "node_id":"dli_spark_floor.xml", + "product_code":"dli", + "code":"201", + "des":"This function is used to round down a to the nearest integer.The return value is of the BIGINT type.If the value of a is NULL, NULL is returned.The value 1 is returned.Th", + "doc_type":"sqlreference", + "kw":"floor,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"floor", + "githuburl":"" + }, + { + "uri":"dli_spark_greatest.html", + "node_id":"dli_spark_greatest.xml", + "product_code":"dli", + "code":"202", + "des":"This function is used to return the greatest value in a list of values.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The value 4.0 is", + "doc_type":"sqlreference", + "kw":"greatest,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"greatest", + "githuburl":"" + }, + { + "uri":"dli_spark_hex.html", + "node_id":"dli_spark_hex.xml", + "product_code":"dli", + "code":"203", + "des":"This function is used to convert an integer or character into its hexadecimal representation.The return value is of the STRING type.If the value of a is 0, 0 is returned.", + "doc_type":"sqlreference", + "kw":"hex,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"hex", + "githuburl":"" + }, + { + "uri":"dli_spark_least.html", + "node_id":"dli_spark_least.xml", + "product_code":"dli", + "code":"204", + "des":"This function is used to return the smallest value in a list of values.The return value is of the DOUBLE type.If the value of v1 or v2 is of the STRING type, an error is ", + "doc_type":"sqlreference", + "kw":"least,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"least", + "githuburl":"" + }, + { + "uri":"dli_spark_ln.html", + "node_id":"dli_spark_ln.xml", + "product_code":"dli", + "code":"205", + "des":"This function is used to return the natural logarithm of a given value.The return value is of the DOUBLE type.If the value of a is negative or 0, NULL is returned.If the ", + "doc_type":"sqlreference", + "kw":"ln,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"ln", + "githuburl":"" + }, + { + "uri":"dli_spark_log.html", + "node_id":"dli_spark_log.xml", + "product_code":"dli", + "code":"206", + "des":"This function is used to return the natural logarithm of a given base and exponent.The return value is of the DOUBLE type.If the value of base or a is NULL, NULL is retur", + "doc_type":"sqlreference", + "kw":"log,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"log", + "githuburl":"" + }, + { + "uri":"dli_spark_log10.html", + "node_id":"dli_spark_log10.xml", + "product_code":"dli", + "code":"207", + "des":"This function is used to return the natural logarithm of a given value with a base of 10.The return value is of the DOUBLE type.If the value of a is negative, 0, or NULL,", + "doc_type":"sqlreference", + "kw":"log10,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"log10", + "githuburl":"" + }, + { + "uri":"dli_spark_log2.html", + "node_id":"dli_spark_log2.xml", + "product_code":"dli", + "code":"208", + "des":"This function is used to return the natural logarithm of a given value with a base of 2.The return value is of the DOUBLE type.If the value of a is negative, 0, or NULL, ", + "doc_type":"sqlreference", + "kw":"log2,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"log2", + "githuburl":"" + }, + { + "uri":"dli_spark_median.html", + "node_id":"dli_spark_median.xml", + "product_code":"dli", + "code":"209", + "des":"This function is used to calculate the median of input parameters.The return value is of the DOUBLE or DECIMAL type.If the column name does not exist, an error is reporte", + "doc_type":"sqlreference", + "kw":"median,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"median", + "githuburl":"" + }, + { + "uri":"dli_spark_negative.html", + "node_id":"dli_spark_negative.xml", + "product_code":"dli", + "code":"210", + "des":"This function is used to return the additive inverse of a.The return value is of the DECIMAL or INT type.If the value of a is NULL, NULL is returned.The value -1 is retur", + "doc_type":"sqlreference", + "kw":"negative,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"negative", + "githuburl":"" + }, + { + "uri":"dli_spark_percentlie.html", + "node_id":"dli_spark_percentlie.xml", + "product_code":"dli", + "code":"211", + "des":"This function is used to return the exact percentile, which is applicable to a small amount of data. It sorts a specified column in ascending order, and then obtains the ", + "doc_type":"sqlreference", + "kw":"percentlie,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"percentlie", + "githuburl":"" + }, + { + "uri":"dli_spark_percentlie_approx.html", + "node_id":"dli_spark_percentlie_approx.xml", + "product_code":"dli", + "code":"212", + "des":"This function is used to return the approximate percentile, which is applicable to a large amount of data. It sorts a specified column in ascending order, and then obtain", + "doc_type":"sqlreference", + "kw":"percentlie_approx,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"percentlie_approx", + "githuburl":"" + }, + { + "uri":"dli_spark_pi.html", + "node_id":"dli_spark_pi.xml", + "product_code":"dli", + "code":"213", + "des":"This function is used to return the value of π.The return value is of the DOUBLE type.The value 3.141592653589793 is returned.", + "doc_type":"sqlreference", + "kw":"pi,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"pi", + "githuburl":"" + }, + { + "uri":"dli_spark_pmod.html", + "node_id":"dli_spark_pmod.xml", + "product_code":"dli", + "code":"214", + "des":"This function is used to return the positive value of the remainder after division of x by y.pmod(INT a, INT b)The return value is of the DECIMAL or INT type.If the value", + "doc_type":"sqlreference", + "kw":"pmod,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"pmod", + "githuburl":"" + }, + { + "uri":"dli_spark_positive.html", + "node_id":"dli_spark_positive.xml", + "product_code":"dli", + "code":"215", + "des":"This function is used to return the value of a.The return value is of the DECIMAL, DOUBLE, or INT type.If the value of a is NULL, NULL is returned.The value 3 is returned", + "doc_type":"sqlreference", + "kw":"positive,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"positive", + "githuburl":"" + }, + { + "uri":"dli_spark_pow.html", + "node_id":"dli_spark_pow.xml", + "product_code":"dli", + "code":"216", + "des":"This function is used to calculate and return the pth power of a.The return value is of the DOUBLE type.If the value of a or p is NULL, NULL is returned.The value 16 retu", + "doc_type":"sqlreference", + "kw":"pow,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"pow", + "githuburl":"" + }, + { + "uri":"dli_spark_radians.html", + "node_id":"dli_spark_radians.xml", + "product_code":"dli", + "code":"217", + "des":"This function is used to return the radian corresponding to an angle.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The value 1.047197", + "doc_type":"sqlreference", + "kw":"radians,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"radians", + "githuburl":"" + }, + { + "uri":"dli_spark_rand.html", + "node_id":"dli_spark_rand.xml", + "product_code":"dli", + "code":"218", + "des":"This function is used to return an evenly distributed random number that is greater than or equal to 0 and less than 1.The return value is of the DOUBLE type.The value 0.", + "doc_type":"sqlreference", + "kw":"rand,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"rand", + "githuburl":"" + }, + { + "uri":"dli_spark_round.html", + "node_id":"dli_spark_round.xml", + "product_code":"dli", + "code":"219", + "des":"This function is used to calculate the rounded value of a up to d decimal places.The return value is of the DOUBLE type.If the value of d is negative, an error is reporte", + "doc_type":"sqlreference", + "kw":"round,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"round", + "githuburl":"" + }, + { + "uri":"dli_spark_shiftleft.html", + "node_id":"dli_spark_shiftleft.xml", + "product_code":"dli", + "code":"220", + "des":"This function is used to perform a signed bitwise left shift. It takes the binary number a and shifts it b positions to the left.shiftleft(BIGINT a, BIGINT b)The return v", + "doc_type":"sqlreference", + "kw":"shiftleft,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"shiftleft", + "githuburl":"" + }, + { + "uri":"dli_spark_shiftright.html", + "node_id":"dli_spark_shiftright.xml", + "product_code":"dli", + "code":"221", + "des":"This function is used to perform a signed bitwise right shift. It takes the binary number a and shifts it b positions to the right.The return value is of the INT type.If ", + "doc_type":"sqlreference", + "kw":"shiftright,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"shiftright", + "githuburl":"" + }, + { + "uri":"dli_spark_shiftrightunsigned.html", + "node_id":"dli_spark_shiftrightunsigned.xml", + "product_code":"dli", + "code":"222", + "des":"This function is used to perform an unsigned bitwise right shift. It takes the binary number a and shifts it b positions to the right.The return value is of the INT type.", + "doc_type":"sqlreference", + "kw":"shiftrightunsigned,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"shiftrightunsigned", + "githuburl":"" + }, + { + "uri":"dli_spark_sign.html", + "node_id":"dli_spark_sign.xml", + "product_code":"dli", + "code":"223", + "des":"This function is used to return the positive and negative signs corresponding to a.The return value is of the DOUBLE type.If the value of a is a positive number, 1 is ret", + "doc_type":"sqlreference", + "kw":"sign,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"sign", + "githuburl":"" + }, + { + "uri":"dli_spark_sin.html", + "node_id":"dli_spark_sin.xml", + "product_code":"dli", + "code":"224", + "des":"This function is used to return the sine value of a, with input in radians.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The value 1 ", + "doc_type":"sqlreference", + "kw":"sin,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"sin", + "githuburl":"" + }, + { + "uri":"dli_spark_sqrt.html", + "node_id":"dli_spark_sqrt.xml", + "product_code":"dli", + "code":"225", + "des":"This function is used to return the square root of a value.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The value 2.8284271247461903", + "doc_type":"sqlreference", + "kw":"sqrt,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"sqrt", + "githuburl":"" + }, + { + "uri":"dli_spark_tan.html", + "node_id":"dli_spark_tan.xml", + "product_code":"dli", + "code":"226", + "des":"This function is used to return the tangent value of a, with input in radians.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The value", + "doc_type":"sqlreference", + "kw":"tan,Mathematical Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"tan", + "githuburl":"" + }, + { + "uri":"dli_08_0474.html", + "node_id":"dli_08_0474.xml", + "product_code":"dli", + "code":"227", + "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", + "doc_type":"sqlreference", + "kw":"Aggregate Functions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Aggregate Functions", "githuburl":"" }, { - "uri":"dli_08_0069.html", + "uri":"dli_08_0068.html", + "node_id":"dli_08_0068.xml", "product_code":"dli", - "code":"101", - "des":"A window function performs a calculation operation on a set of values related to the current value. A window function can be an aggregate function used in the GROUP BY cl", + "code":"228", + "des":"Table 1 lists the aggregate functions supported by DLI.", "doc_type":"sqlreference", - "kw":"Window Functions,Built-in Functions,SQL Syntax Reference", + "kw":"Overview,Aggregate Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Overview", + "githuburl":"" + }, + { + "uri":"dli_spark_avg.html", + "node_id":"dli_spark_avg.xml", + "product_code":"dli", + "code":"229", + "des":"This function is used to return the average value.The return value is of the DOUBLE type.If the value of col is NULL, the column is not involved in calculation.Calculates", + "doc_type":"sqlreference", + "kw":"avg,Aggregate Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"avg", + "githuburl":"" + }, + { + "uri":"dli_spark_corr.html", + "node_id":"dli_spark_corr.xml", + "product_code":"dli", + "code":"230", + "des":"This function is used to return the correlation coefficient between two columns of numerical values.The return value is of the DOUBLE type.Calculates the correlation coef", + "doc_type":"sqlreference", + "kw":"corr,Aggregate Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"corr", + "githuburl":"" + }, + { + "uri":"dli_spark_count.html", + "node_id":"dli_spark_count.xml", + "product_code":"dli", + "code":"231", + "des":"This function is used to return the number of records.The return value is of the BIGINT type.If the value of colname is NULL, the row is not involved in calculation.Calcu", + "doc_type":"sqlreference", + "kw":"count,Aggregate Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"count", + "githuburl":"" + }, + { + "uri":"dli_spark_covar_pop.html", + "node_id":"dli_spark_covar_pop.xml", + "product_code":"dli", + "code":"232", + "des":"This function is used to return the covariance between two columns of numerical values.The return value is of the DOUBLE type.Calculates the covariance between the invent", + "doc_type":"sqlreference", + "kw":"covar_pop,Aggregate Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"covar_pop", + "githuburl":"" + }, + { + "uri":"dli_spark_covar_samp.html", + "node_id":"dli_spark_covar_samp.xml", + "product_code":"dli", + "code":"233", + "des":"This function is used to return the sample covariance between two columns of numerical values.The return value is of the DOUBLE type.Calculates the sample covariance betw", + "doc_type":"sqlreference", + "kw":"covar_samp,Aggregate Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"covar_samp", + "githuburl":"" + }, + { + "uri":"dli_spark_max.html", + "node_id":"dli_spark_max.xml", + "product_code":"dli", + "code":"234", + "des":"This function is used to return the maximum value.The return value is of the DOUBLE type.The return type is the same as the type of col. The return rules are as follows:I", + "doc_type":"sqlreference", + "kw":"max,Aggregate Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"max", + "githuburl":"" + }, + { + "uri":"dli_spark_min.html", + "node_id":"dli_spark_min.xml", + "product_code":"dli", + "code":"235", + "des":"This function is used to return the minimum value.The return value is of the DOUBLE type.The return type is the same as the type of col. The return rules are as follows:I", + "doc_type":"sqlreference", + "kw":"min,Aggregate Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"min", + "githuburl":"" + }, + { + "uri":"dli_spark_percentile.html", + "node_id":"dli_spark_percentile.xml", + "product_code":"dli", + "code":"236", + "des":"This function is used to return the numerical value at a certain percentage point within a range of values.The return value is of the DOUBLE type.The value should be betw", + "doc_type":"sqlreference", + "kw":"percentile,Aggregate Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"percentile", + "githuburl":"" + }, + { + "uri":"dli_spark_percentile_approx.html", + "node_id":"dli_spark_percentile_approx.xml", + "product_code":"dli", + "code":"237", + "des":"This function is used to approximate the pth percentile (including floating-point numbers) of a numeric column within a group.The return value is of the DOUBLE type.Calcu", + "doc_type":"sqlreference", + "kw":"percentile_approx,Aggregate Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"percentile_approx", + "githuburl":"" + }, + { + "uri":"dli_spark_stddev_pop.html", + "node_id":"dli_spark_stddev_pop.xml", + "product_code":"dli", + "code":"238", + "des":"This function is used to return the deviation of a specified column.The return value is of the DOUBLE type.Calculates the deviation of all offering inventories (items). A", + "doc_type":"sqlreference", + "kw":"stddev_pop,Aggregate Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"stddev_pop", + "githuburl":"" + }, + { + "uri":"dli_spark_stddev_samp.html", + "node_id":"dli_spark_stddev_samp.xml", + "product_code":"dli", + "code":"239", + "des":"This function is used to return the sample deviation of a specified column.The return value is of the DOUBLE type.Calculates the sample covariance between the inventory (", + "doc_type":"sqlreference", + "kw":"stddev_samp,Aggregate Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"stddev_samp", + "githuburl":"" + }, + { + "uri":"dli_spark_sum.html", + "node_id":"dli_spark_sum.xml", + "product_code":"dli", + "code":"240", + "des":"This function is used to calculate the total sum.The return value is of the DOUBLE type.If the value of col is NULL, the row is not involved in calculation.Calculates the", + "doc_type":"sqlreference", + "kw":"sum,Aggregate Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"sum", + "githuburl":"" + }, + { + "uri":"dli_spark_variance_var_pop.html", + "node_id":"dli_spark_variance_var_pop.xml", + "product_code":"dli", + "code":"241", + "des":"This function is used to return the variance of a column.The return value is of the DOUBLE type.Calculates the variance of all offering inventories (items). An example co", + "doc_type":"sqlreference", + "kw":"variance/var_pop,Aggregate Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"variance/var_pop", + "githuburl":"" + }, + { + "uri":"dli_spark_war_samp.html", + "node_id":"dli_spark_war_samp.xml", + "product_code":"dli", + "code":"242", + "des":"This function is used to return the sample variance of a specified column.The return value is of the DOUBLE type.Calculates the sample variance of all offering inventorie", + "doc_type":"sqlreference", + "kw":"var_samp,Aggregate Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"var_samp", + "githuburl":"" + }, + { + "uri":"dli_08_0475.html", + "node_id":"dli_08_0475.xml", + "product_code":"dli", + "code":"243", + "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", + "doc_type":"sqlreference", + "kw":"Window Functions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Window Functions", "githuburl":"" }, { - "uri":"dli_08_0150.html", + "uri":"dli_08_0069.html", + "node_id":"dli_08_0069.xml", "product_code":"dli", - "code":"102", + "code":"244", + "des":"Table 1 lists the window functions supported by DLI.", + "doc_type":"sqlreference", + "kw":"Overview,Window Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Overview", + "githuburl":"" + }, + { + "uri":"dli_spark_cume_dist.html", + "node_id":"dli_spark_cume_dist.xml", + "product_code":"dli", + "code":"245", + "des":"This function is used to return the cumulative distribution, which is equivalent to calculating the proportion of data in the partition that is greater than or equal to, ", + "doc_type":"sqlreference", + "kw":"cume_dist,Window Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"cume_dist", + "githuburl":"" + }, + { + "uri":"dli_spark_first_value.html", + "node_id":"dli_spark_first_value.xml", + "product_code":"dli", + "code":"246", + "des":"This function is used to obtain the value of the first data record in the window corresponding to the current row.The restrictions on using window functions are as follow", + "doc_type":"sqlreference", + "kw":"first_value,Window Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"first_value", + "githuburl":"" + }, + { + "uri":"dli_spark_last_value.html", + "node_id":"dli_spark_last_value.xml", + "product_code":"dli", + "code":"247", + "des":"This function is used to obtain the value of the last data record in the window corresponding to the current row.The restrictions on using window functions are as follows", + "doc_type":"sqlreference", + "kw":"last_value,Window Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"last_value", + "githuburl":"" + }, + { + "uri":"dli_spark_lag.html", + "node_id":"dli_spark_lag.xml", + "product_code":"dli", + "code":"248", + "des":"This function is used to return the value of the nth row upwards within a specified window.The restrictions on using window functions are as follows:Window functions can ", + "doc_type":"sqlreference", + "kw":"lag,Window Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"lag", + "githuburl":"" + }, + { + "uri":"dli_spark_lead.html", + "node_id":"dli_spark_lead.xml", + "product_code":"dli", + "code":"249", + "des":"This function is used to return the value of the nth row downwards within a specified window.The restrictions on using window functions are as follows:Window functions ca", + "doc_type":"sqlreference", + "kw":"lead,Window Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"lead", + "githuburl":"" + }, + { + "uri":"dli_spark_percent_rank.html", + "node_id":"dli_spark_percent_rank.xml", + "product_code":"dli", + "code":"250", + "des":"This function is used to return the value of the column specified in the ORDER BY clause of a window, expressed as a decimal between 0 and 1. It is calculated as (the ran", + "doc_type":"sqlreference", + "kw":"percent_rank,Window Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"percent_rank", + "githuburl":"" + }, + { + "uri":"dli_spark_rank.html", + "node_id":"dli_spark_rank.xml", + "product_code":"dli", + "code":"251", + "des":"This function is used to return the rank of a value in a set of values. When multiple values share the same rank, the next rank in the sequence is not consecutive.The res", + "doc_type":"sqlreference", + "kw":"rank,Window Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"rank", + "githuburl":"" + }, + { + "uri":"dli_spark_row_number.html", + "node_id":"dli_spark_row_number.xml", + "product_code":"dli", + "code":"252", + "des":"This function is used to return the row number, starting from 1 and increasing incrementally.The restrictions on using window functions are as follows:Window functions ca", + "doc_type":"sqlreference", + "kw":"row_number,Window Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"row_number", + "githuburl":"" + }, + { + "uri":"dli_08_0476.html", + "node_id":"dli_08_0476.xml", + "product_code":"dli", + "code":"253", + "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", + "doc_type":"sqlreference", + "kw":"Other Functions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Other Functions", + "githuburl":"" + }, + { + "uri":"dli_08_0469.html", + "node_id":"dli_08_0469.xml", + "product_code":"dli", + "code":"254", + "des":"The following table lists the functions provided by DLI, such as decode1, javahash, and max_pt.", + "doc_type":"sqlreference", + "kw":"Overview,Other Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"Overview", + "githuburl":"" + }, + { + "uri":"dli_spark_decode1.html", + "node_id":"dli_spark_decode1.xml", + "product_code":"dli", + "code":"255", + "des":"This function is used to implement if-then-else branch selection.result and default are return values. These values can be of any data type.If they match, the value of re", + "doc_type":"sqlreference", + "kw":"decode1,Other Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"decode1", + "githuburl":"" + }, + { + "uri":"dli_spark_javahash.html", + "node_id":"dli_spark_javahash.xml", + "product_code":"dli", + "code":"256", + "des":"This function is used to return the hash value of a.The return value is of the STRING type.The hash value is returned. If the value of a is null, an error is reported.The", + "doc_type":"sqlreference", + "kw":"javahash,Other Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"javahash", + "githuburl":"" + }, + { + "uri":"dli_spark_max_pt.html", + "node_id":"dli_spark_max_pt.xml", + "product_code":"dli", + "code":"257", + "des":"This function is used to return the name of the largest level-1 partition that contains data in a partitioned table and read the data of this partition.The return value i", + "doc_type":"sqlreference", + "kw":"max_pt,Other Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"max_pt", + "githuburl":"" + }, + { + "uri":"dli_spark_ordinal.html", + "node_id":"dli_spark_ordinal.xml", + "product_code":"dli", + "code":"258", + "des":"This function is used to sort input variables in ascending order and return the value at the position specified by nth.The return value is of the DOUBLE or DECIMAL type.V", + "doc_type":"sqlreference", + "kw":"ordinal,Other Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"ordinal", + "githuburl":"" + }, + { + "uri":"dli_spark_trans_array.html", + "node_id":"dli_spark_trans_array.xml", + "product_code":"dli", + "code":"259", + "des":"This function is used to convert an array split by a fixed separator in a column into multiple rows.All columns used as keys must be placed before the columns to be trans", + "doc_type":"sqlreference", + "kw":"trans_array,Other Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"trans_array", + "githuburl":"" + }, + { + "uri":"dli_spark_trunc_numeric.html", + "node_id":"dli_spark_trunc_numeric.xml", + "product_code":"dli", + "code":"260", + "des":"This function is used to truncate the number value to a specified decimal place.The return value is of the DOUBLE or DECIMAL type.The return rules are as follows:If the n", + "doc_type":"sqlreference", + "kw":"trunc_numeric,Other Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"trunc_numeric", + "githuburl":"" + }, + { + "uri":"dli_spark_url_decode.html", + "node_id":"dli_spark_url_decode.xml", + "product_code":"dli", + "code":"261", + "des":"This function is used to convert a string from the application/x-www-form-urlencoded MIME format to regular characters.The return value is of the STRING type.UTF-8-encode", + "doc_type":"sqlreference", + "kw":"url_decode,Other Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"url_decode", + "githuburl":"" + }, + { + "uri":"dli_spark_url_encode.html", + "node_id":"dli_spark_url_encode.xml", + "product_code":"dli", + "code":"262", + "des":"This function is used to encode a string in the application/x-www-form-urlencoded MIME format.url_encode(string [, string ])The return value is of the ST", + "doc_type":"sqlreference", + "kw":"url_encode,Other Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], + "title":"url_encode", + "githuburl":"" + }, + { + "uri":"dli_08_0150.html", + "node_id":"dli_08_0150.xml", + "product_code":"dli", + "code":"263", "des":"This statement is a basic query statement and is used to return the query results.The table to be queried must exist. Otherwise, an error is reported.To filter the record", "doc_type":"sqlreference", "kw":"Basic SELECT Statements,Spark SQL Syntax Reference,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Basic SELECT Statements", "githuburl":"" }, { "uri":"dli_08_0151.html", + "node_id":"dli_08_0151.xml", "product_code":"dli", - "code":"103", + "code":"264", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Filtering", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Filtering", "githuburl":"" }, { "uri":"dli_08_0152.html", + "node_id":"dli_08_0152.xml", "product_code":"dli", - "code":"104", + "code":"265", "des":"This statement is used to filter the query results using the WHERE clause.All is used to return repeated rows. By default, all repeated rows are returned. It is followed ", "doc_type":"sqlreference", "kw":"WHERE Filtering Clause,Filtering,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"WHERE Filtering Clause", "githuburl":"" }, { "uri":"dli_08_0153.html", + "node_id":"dli_08_0153.xml", "product_code":"dli", - "code":"105", + "code":"266", "des":"This statement is used to filter the query results using the HAVING clause.All is used to return repeated rows. By default, all repeated rows are returned. It is followed", "doc_type":"sqlreference", "kw":"HAVING Filtering Clause,Filtering,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"HAVING Filtering Clause", "githuburl":"" }, { "uri":"dli_08_0154.html", + "node_id":"dli_08_0154.xml", "product_code":"dli", - "code":"106", + "code":"267", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Sorting", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Sorting", "githuburl":"" }, { "uri":"dli_08_0155.html", + "node_id":"dli_08_0155.xml", "product_code":"dli", - "code":"107", + "code":"268", "des":"This statement is used to order the result set of a query by the specified field.ASC/DESC: ASC sorts from the lowest value to the highest value. DESC sorts from the highe", "doc_type":"sqlreference", "kw":"ORDER BY,Sorting,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"ORDER BY", "githuburl":"" }, { "uri":"dli_08_0156.html", + "node_id":"dli_08_0156.xml", "product_code":"dli", - "code":"108", + "code":"269", "des":"This statement is used to achieve the partial sorting of tables according to fields.ASC/DESC: ASC sorts from the lowest value to the highest value. DESC sorts from the hi", "doc_type":"sqlreference", "kw":"SORT BY,Sorting,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"SORT BY", "githuburl":"" }, { "uri":"dli_08_0157.html", + "node_id":"dli_08_0157.xml", "product_code":"dli", - "code":"109", + "code":"270", "des":"This statement is used to bucket a table and sort the table within buckets.CLUSTER BY: Buckets are created based on specified fields. Single fields and multiple fields ar", "doc_type":"sqlreference", "kw":"CLUSTER BY,Sorting,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"CLUSTER BY", "githuburl":"" }, { "uri":"dli_08_0158.html", + "node_id":"dli_08_0158.xml", "product_code":"dli", - "code":"110", + "code":"271", "des":"This statement is used to bucket a table according to the field.DISTRIBUTE BY: Buckets are created based on specified fields. A single field or multiple fields are suppor", "doc_type":"sqlreference", "kw":"DISTRIBUTE BY,Sorting,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"DISTRIBUTE BY", "githuburl":"" }, { "uri":"dli_08_0159.html", + "node_id":"dli_08_0159.xml", "product_code":"dli", - "code":"111", + "code":"272", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Grouping", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Grouping", "githuburl":"" }, { "uri":"dli_08_0160.html", + "node_id":"dli_08_0160.xml", "product_code":"dli", - "code":"112", + "code":"273", "des":"This statement is used to group a table based on columns.Column-based GROUP BY can be categorized into single-column GROUP BY and multi-column GROUP BY.Single-column GROU", "doc_type":"sqlreference", "kw":"Column-Based GROUP BY,Grouping,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Column-Based GROUP BY", "githuburl":"" }, { "uri":"dli_08_0161.html", + "node_id":"dli_08_0161.xml", "product_code":"dli", - "code":"113", + "code":"274", "des":"This statement is used to group a table according to expressions.The groupby_expression can contain a single field or multiple fields, and also can call aggregate functio", "doc_type":"sqlreference", "kw":"Expression-Based GROUP BY,Grouping,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Expression-Based GROUP BY", "githuburl":"" }, { "uri":"dli_08_0162.html", + "node_id":"dli_08_0162.xml", "product_code":"dli", - "code":"114", + "code":"275", "des":"This statement filters a table after grouping it using the HAVING clause.The groupby_expression can contain a single field or multiple fields, and can also call aggregate", "doc_type":"sqlreference", "kw":"GROUP BY Using HAVING,Grouping,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"GROUP BY Using HAVING", "githuburl":"" }, { "uri":"dli_08_0163.html", + "node_id":"dli_08_0163.xml", "product_code":"dli", - "code":"115", + "code":"276", "des":"This statement is used to generate the aggregate row, super-aggregate row, and the total row. The statement can achieve multi-layer statistics from right to left and disp", "doc_type":"sqlreference", "kw":"ROLLUP,Grouping,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"ROLLUP", "githuburl":"" }, { "uri":"dli_08_0164.html", + "node_id":"dli_08_0164.xml", "product_code":"dli", - "code":"116", + "code":"277", "des":"This statement is used to generate the cross-table row and achieve the cross-statistics of the GROUP BY field.GROUPING SETS is the expansion of GROUP BY. For example:SELE", "doc_type":"sqlreference", "kw":"GROUPING SETS,Grouping,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"GROUPING SETS", "githuburl":"" }, { "uri":"dli_08_0165.html", + "node_id":"dli_08_0165.xml", "product_code":"dli", - "code":"117", + "code":"278", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"JOIN", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"JOIN", "githuburl":"" }, { "uri":"dli_08_0166.html", + "node_id":"dli_08_0166.xml", "product_code":"dli", - "code":"118", + "code":"279", "des":"This statement is used to join and return the rows that meet the JOIN conditions from two tables as the result set.JOIN/INNER JOIN: Only the records that meet the JOIN co", "doc_type":"sqlreference", "kw":"INNER JOIN,JOIN,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"INNER JOIN", "githuburl":"" }, { "uri":"dli_08_0167.html", + "node_id":"dli_08_0167.xml", "product_code":"dli", - "code":"119", + "code":"280", "des":"Join the left table with the right table and return all joined records of the left table. If no joined record is found, NULL will be returned.LEFT OUTER JOIN: Returns all", "doc_type":"sqlreference", "kw":"LEFT OUTER JOIN,JOIN,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"LEFT OUTER JOIN", "githuburl":"" }, { "uri":"dli_08_0168.html", + "node_id":"dli_08_0168.xml", "product_code":"dli", - "code":"120", + "code":"281", "des":"Match the right table with the left table and return all matched records of the right table. If no matched record is found, NULL will be returned.RIGHT OUTER JOIN: Return", "doc_type":"sqlreference", "kw":"RIGHT OUTER JOIN,JOIN,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"RIGHT OUTER JOIN", "githuburl":"" }, { "uri":"dli_08_0169.html", + "node_id":"dli_08_0169.xml", "product_code":"dli", - "code":"121", + "code":"282", "des":"Join all records from the right table and the left table and return all joined records. If no joined record is found, NULL will be returned.FULL OUTER JOIN: Matches all r", "doc_type":"sqlreference", "kw":"FULL OUTER JOIN,JOIN,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"FULL OUTER JOIN", "githuburl":"" }, { "uri":"dli_08_0170.html", + "node_id":"dli_08_0170.xml", "product_code":"dli", - "code":"122", + "code":"283", "des":"This statement has the same function as INNER JOIN, that is, the result set that meet the WHERE condition is returned. However, IMPLICIT JOIN does not use the condition s", "doc_type":"sqlreference", "kw":"IMPLICIT JOIN,JOIN,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"IMPLICIT JOIN", "githuburl":"" }, { "uri":"dli_08_0171.html", + "node_id":"dli_08_0171.xml", "product_code":"dli", - "code":"123", + "code":"284", "des":"Cartesian JOIN joins each record of table A with all records in table B. For example, if there are m records in table A and n records in table B, m x n records will be ge", "doc_type":"sqlreference", "kw":"Cartesian JOIN,JOIN,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Cartesian JOIN", "githuburl":"" }, { "uri":"dli_08_0172.html", + "node_id":"dli_08_0172.xml", "product_code":"dli", - "code":"124", + "code":"285", "des":"This statement is used to query the records that meet the JOIN condition from the left table.LEFT SEMI JOIN: Indicates to only return the records from the left table. LEF", "doc_type":"sqlreference", "kw":"LEFT SEMI JOIN,JOIN,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"LEFT SEMI JOIN", "githuburl":"" }, { "uri":"dli_08_0173.html", + "node_id":"dli_08_0173.xml", "product_code":"dli", - "code":"125", + "code":"286", "des":"This statement is used to join multiple tables using unequal values and return the result set that meet the condition.The non_equi_join_condition is similar to join_condi", "doc_type":"sqlreference", "kw":"NON-EQUIJOIN,JOIN,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"NON-EQUIJOIN", "githuburl":"" }, { "uri":"dli_08_0174.html", + "node_id":"dli_08_0174.xml", "product_code":"dli", - "code":"126", + "code":"287", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Subquery", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Subquery", "githuburl":"" }, { "uri":"dli_08_0175.html", + "node_id":"dli_08_0175.xml", "product_code":"dli", - "code":"127", + "code":"288", "des":"Subqueries are nested in the WHERE clause, and the subquery result is used as the filtering condition.All is used to return repeated rows. By default, all repeated rows a", "doc_type":"sqlreference", "kw":"Subquery Nested by WHERE,Subquery,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Subquery Nested by WHERE", "githuburl":"" }, { "uri":"dli_08_0176.html", + "node_id":"dli_08_0176.xml", "product_code":"dli", - "code":"128", + "code":"289", "des":"This statement is used to nest subquery by FROM and use the subquery results as the data source of the external SELECT statement.All is used to return repeated rows. By d", "doc_type":"sqlreference", "kw":"Subquery Nested by FROM,Subquery,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Subquery Nested by FROM", "githuburl":"" }, { "uri":"dli_08_0177.html", + "node_id":"dli_08_0177.xml", "product_code":"dli", - "code":"129", + "code":"290", "des":"This statement is used to embed a subquery in the HAVING clause. The subquery result is used as a part of the HAVING clause.All is used to return repeated rows. By defaul", "doc_type":"sqlreference", "kw":"Subquery Nested by HAVING,Subquery,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Subquery Nested by HAVING", "githuburl":"" }, { "uri":"dli_08_0178.html", + "node_id":"dli_08_0178.xml", "product_code":"dli", - "code":"130", + "code":"291", "des":"This statement is used to nest queries in the subquery.All is used to return repeated rows. By default, all repeated rows are returned. It is followed by asterisks (*) on", "doc_type":"sqlreference", "kw":"Multi-Layer Nested Subquery,Subquery,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Multi-Layer Nested Subquery", "githuburl":"" }, { "uri":"dli_08_0179.html", + "node_id":"dli_08_0179.xml", "product_code":"dli", - "code":"131", + "code":"292", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Alias", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Alias", "githuburl":"" }, { "uri":"dli_08_0180.html", + "node_id":"dli_08_0180.xml", "product_code":"dli", - "code":"132", + "code":"293", "des":"This statement is used to specify an alias for a table or the subquery result.table_reference: Can be a table, view, or subquery.As: Is used to connect to table_reference", "doc_type":"sqlreference", "kw":"AS for Table,Alias,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"AS for Table", "githuburl":"" }, { "uri":"dli_08_0181.html", + "node_id":"dli_08_0181.xml", "product_code":"dli", - "code":"133", + "code":"294", "des":"This statement is used to specify an alias for a column.alias: gives an alias for the attr_expr field.AS: Whether to add AS does not affect the result.The to-be-queried t", "doc_type":"sqlreference", "kw":"AS for Column,Alias,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"AS for Column", "githuburl":"" }, { "uri":"dli_08_0182.html", + "node_id":"dli_08_0182.xml", "product_code":"dli", - "code":"134", + "code":"295", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Set Operations", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Set Operations", "githuburl":"" }, { "uri":"dli_08_0183.html", + "node_id":"dli_08_0183.xml", "product_code":"dli", - "code":"135", + "code":"296", "des":"This statement is used to return the union set of multiple query results.UNION: The set operation is used to join the head and tail of a table based on certain conditions", "doc_type":"sqlreference", "kw":"UNION,Set Operations,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"UNION", "githuburl":"" }, { "uri":"dli_08_0184.html", + "node_id":"dli_08_0184.xml", "product_code":"dli", - "code":"136", + "code":"297", "des":"This statement is used to return the intersection set of multiple query results.INTERSECT returns the intersection of multiple query results. The number of columns return", "doc_type":"sqlreference", "kw":"INTERSECT,Set Operations,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"INTERSECT", "githuburl":"" }, { "uri":"dli_08_0185.html", + "node_id":"dli_08_0185.xml", "product_code":"dli", - "code":"137", + "code":"298", "des":"This statement is used to return the difference set of two query results.EXCEPT minus the sets. A EXCEPT B indicates to remove the records that exist in both A and B from", "doc_type":"sqlreference", "kw":"EXCEPT,Set Operations,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"EXCEPT", "githuburl":"" }, { "uri":"dli_08_0186.html", + "node_id":"dli_08_0186.xml", "product_code":"dli", - "code":"138", + "code":"299", "des":"This statement is used to define the common table expression (CTE) using WITH...AS to simplify the query and make the result easier to read and maintain.cte_name: Name of", "doc_type":"sqlreference", "kw":"WITH...AS,Spark SQL Syntax Reference,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"WITH...AS", "githuburl":"" }, { "uri":"dli_08_0187.html", + "node_id":"dli_08_0187.xml", "product_code":"dli", - "code":"139", + "code":"300", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"CASE...WHEN", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"CASE...WHEN", "githuburl":"" }, { "uri":"dli_08_0188.html", + "node_id":"dli_08_0188.xml", "product_code":"dli", - "code":"140", + "code":"301", "des":"This statement is used to display result_expression according to the joined results of input_expression and when_expression.CASE: Subquery is supported in basic CASE stat", "doc_type":"sqlreference", "kw":"Basic CASE Statement,CASE...WHEN,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Basic CASE Statement", "githuburl":"" }, { "uri":"dli_08_0189.html", + "node_id":"dli_08_0189.xml", "product_code":"dli", - "code":"141", + "code":"302", "des":"This statement is used to obtain the value of boolean_expression for each WHEN statement in a specified order. 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T", "doc_type":"sqlreference", "kw":"Postgres CDC Source Table,Creating Source Tables,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Postgres CDC Source Table", "githuburl":"" }, { "uri":"dli_08_0389.html", + "node_id":"dli_08_0389.xml", "product_code":"dli", - "code":"162", + "code":"323", "des":"Create a source stream to obtain data from Redis as input for jobs.An enhanced datasource connection has been created for DLI to connect to the Redis database, so that yo", "doc_type":"sqlreference", "kw":"Redis Source Table,Creating Source Tables,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Redis Source Table", "githuburl":"" }, { "uri":"dli_08_0390.html", + "node_id":"dli_08_0390.xml", "product_code":"dli", - "code":"163", + "code":"324", "des":"Apache Kafka is a fast, scalable, and fault-tolerant distributed message publishing and subscription system. 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Canal provides a unified format schema for changelog and ", "doc_type":"sqlreference", "kw":"Canal,Format,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Canal", "githuburl":"" }, { "uri":"dli_08_0410.html", + "node_id":"dli_08_0410.xml", "product_code":"dli", - "code":"183", + "code":"345", "des":"The Avro Schema Registry (avro-confluent) format allows you to read records that were serialized by the io.confluent.kafka.serializers.KafkaAvroSerializer and to write re", "doc_type":"sqlreference", "kw":"Confluent Avro,Format,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Confluent Avro", "githuburl":"" }, { "uri":"dli_08_0411.html", + "node_id":"dli_08_0411.xml", "product_code":"dli", - "code":"184", + "code":"346", "des":"The CSV format allows you to read and write CSV data based on a CSV schema. Currently, the CSV schema is derived from table schema.KafkaUpsert KafkaUse Kafka to send data", "doc_type":"sqlreference", "kw":"CSV,Format,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"CSV", "githuburl":"" }, { "uri":"dli_08_0412.html", + "node_id":"dli_08_0412.xml", "product_code":"dli", - "code":"185", + "code":"347", "des":"Debezium is a Changelog Data Capture (CDC) tool that can stream changes in real-time from other databases into Kafka. Debezium provides a unified format schema for change", "doc_type":"sqlreference", "kw":"Debezium,Format,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Debezium", "githuburl":"" }, { "uri":"dli_08_0413.html", + "node_id":"dli_08_0413.xml", "product_code":"dli", - "code":"186", + "code":"348", "des":"The JSON format allows you to read and write JSON data based on a JSON schema. Currently, the JSON schema is derived from table schema.KafkaUpsert KafkaElasticsearchIn th", "doc_type":"sqlreference", "kw":"JSON,Format,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"JSON", "githuburl":"" }, { "uri":"dli_08_0414.html", + "node_id":"dli_08_0414.xml", "product_code":"dli", - "code":"187", + "code":"349", "des":"Flink supports to interpret Maxwell JSON messages as INSERT/UPDATE/DELETE messages into Flink SQL system. This is useful in many cases to leverage this feature,such as:Sy", "doc_type":"sqlreference", "kw":"Maxwell,Format,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Maxwell", "githuburl":"" }, { "uri":"dli_08_0415.html", + "node_id":"dli_08_0415.xml", "product_code":"dli", - "code":"188", + "code":"350", "des":"The raw format allows you to read and write raw (byte based) values as a single column.Note: This format encodes null values as null of the byte[] type. This may have lim", "doc_type":"sqlreference", "kw":"Raw,Format,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Raw", "githuburl":"" }, { "uri":"dli_08_0416.html", + "node_id":"dli_08_0416.xml", "product_code":"dli", - "code":"189", + "code":"351", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"DML Snytax", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"DML Snytax", "githuburl":"" }, { "uri":"dli_08_0417.html", + "node_id":"dli_08_0417.xml", "product_code":"dli", - "code":"190", + "code":"352", "des":"SyntaxDescriptionSELECT is used to select data from a table.ALL indicates that all results are returned.DISTINCT indicates that the duplicated results are removed.Precaut", "doc_type":"sqlreference", "kw":"SELECT,DML Snytax,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"SELECT", "githuburl":"" }, { "uri":"dli_08_0418.html", + "node_id":"dli_08_0418.xml", "product_code":"dli", - "code":"191", + "code":"353", "des":"SyntaxDescriptionUNION is used to return the union set of multiple query results.INTERSECT is used to return the intersection of multiple query results.EXCEPT is used to ", "doc_type":"sqlreference", "kw":"Set Operations,DML Snytax,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Set Operations", "githuburl":"" }, { "uri":"dli_08_0419.html", + "node_id":"dli_08_0419.xml", "product_code":"dli", - "code":"192", + "code":"354", "des":"DescriptionGroup Window is defined in GROUP BY. One record is generated from each group. Group Window involves the following functions:Array functionsArray functionsGroup", "doc_type":"sqlreference", "kw":"Window,DML Snytax,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Window", "githuburl":"" }, { "uri":"dli_08_0420.html", + "node_id":"dli_08_0420.xml", "product_code":"dli", - "code":"193", + "code":"355", "des":"SyntaxPrecautionsCurrently, only equi-joins are supported, for example, joins that have at least one conjunctive condition with an equality predicate. Arbitrary cross or ", "doc_type":"sqlreference", "kw":"JOIN,DML Snytax,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"JOIN", "githuburl":"" }, { "uri":"dli_08_0421.html", + "node_id":"dli_08_0421.xml", "product_code":"dli", - "code":"194", + "code":"356", "des":"FunctionThis clause is used to sort data in ascending order on a time attribute.PrecautionsCurrently, only sorting by time attribute is supported.ExampleSort data in asce", "doc_type":"sqlreference", "kw":"OrderBy & Limit,DML Snytax,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"OrderBy & Limit", "githuburl":"" }, { "uri":"dli_08_0422.html", + "node_id":"dli_08_0422.xml", "product_code":"dli", - "code":"195", + "code":"357", "des":"Top-N queries ask for the N smallest or largest values ordered by columns. Both smallest and largest values sets are considered Top-N queries. Top-N queries are useful in", "doc_type":"sqlreference", "kw":"Top-N,DML Snytax,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Top-N", "githuburl":"" }, { "uri":"dli_08_0423.html", + "node_id":"dli_08_0423.xml", "product_code":"dli", - "code":"196", + "code":"358", "des":"Deduplication removes rows that duplicate over a set of columns, keeping only the first one or the last one.ROW_NUMBER(): Assigns a unique, sequential number to each row,", "doc_type":"sqlreference", "kw":"Deduplication,DML Snytax,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Deduplication", "githuburl":"" }, { "uri":"dli_08_0424.html", + "node_id":"dli_08_0424.xml", "product_code":"dli", - "code":"197", + "code":"359", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Functions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Functions", "githuburl":"" }, { "uri":"dli_08_0425.html", + "node_id":"dli_08_0425.xml", "product_code":"dli", - "code":"198", + "code":"360", "des":"DLI supports the following three types of user-defined functions (UDFs):Regular UDF: takes in one or more input parameters and returns a single result.User-defined table-", "doc_type":"sqlreference", "kw":"User-Defined Functions (UDFs),Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"User-Defined Functions (UDFs)", "githuburl":"" }, { "uri":"dli_08_0426.html", + "node_id":"dli_08_0426.xml", "product_code":"dli", - "code":"199", + "code":"361", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Built-In Functions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Built-In Functions", "githuburl":"" }, { "uri":"dli_08_0427.html", + "node_id":"dli_08_0427.xml", "product_code":"dli", - "code":"200", + "code":"362", "des":"All data types can be compared by using relational operators and the result is returned as a BOOLEAN value.Relationship operators are binary operators. Two compared data ", "doc_type":"sqlreference", "kw":"Mathematical Operation Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Mathematical Operation Functions", "githuburl":"" }, { "uri":"dli_08_0428.html", + "node_id":"dli_08_0428.xml", "product_code":"dli", - "code":"201", + "code":"363", "des":"SyntaxExampleTest input data.Test the data source kafka. The message content is as follows:{name:James,age:24,sex:male,grade:{math:95,science:[80,85],english:100}}\n{name:", "doc_type":"sqlreference", "kw":"String Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"String Functions", "githuburl":"" }, { "uri":"dli_08_0429.html", + "node_id":"dli_08_0429.xml", "product_code":"dli", - "code":"202", + "code":"364", "des":"Table 1 lists the time functions supported by Flink OpenSource SQL.FunctionReturns a SQL date parsed from string in form of yyyy-MM-dd.Returns a SQL date parsed from stri", "doc_type":"sqlreference", "kw":"Temporal Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Temporal Functions", "githuburl":"" }, { "uri":"dli_08_0430.html", + "node_id":"dli_08_0430.xml", "product_code":"dli", - "code":"203", + "code":"365", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Conditional Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Conditional Functions", "githuburl":"" }, { "uri":"dli_08_0431.html", + "node_id":"dli_08_0431.xml", "product_code":"dli", - "code":"204", - "des":"This function is used to forcibly convert types.If the input is NULL, NULL is returned.The following example converts the amount value to an integer.Flink jobs do not sup", + "code":"366", + "des":"This function is used to forcibly convert types.If the input is NULL, NULL is returned.The cast function does not support converting a string to the JSON format.The follo", "doc_type":"sqlreference", "kw":"Type Conversion Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Type Conversion Functions", "githuburl":"" }, { "uri":"dli_08_0432.html", + "node_id":"dli_08_0432.xml", "product_code":"dli", - "code":"205", + "code":"367", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Collection Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Collection Functions", "githuburl":"" }, { "uri":"dli_08_0433.html", + "node_id":"dli_08_0433.xml", "product_code":"dli", - "code":"206", + "code":"368", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Value Construction Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Value Construction Functions", "githuburl":"" }, { "uri":"dli_08_0434.html", + "node_id":"dli_08_0434.xml", "product_code":"dli", - "code":"207", + "code":"369", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Value Access Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Value Access Functions", "githuburl":"" }, { "uri":"dli_08_0435.html", + "node_id":"dli_08_0435.xml", "product_code":"dli", - "code":"208", + "code":"370", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Hash Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Hash Functions", "githuburl":"" }, { "uri":"dli_08_0436.html", + "node_id":"dli_08_0436.xml", "product_code":"dli", - "code":"209", + "code":"371", "des":"An aggregate function performs a calculation operation on a set of input values and returns a value. For example, the COUNT function counts the number of rows retrieved b", "doc_type":"sqlreference", "kw":"Aggregate Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Aggregate Functions", "githuburl":"" }, { "uri":"dli_08_0437.html", + "node_id":"dli_08_0437.xml", "product_code":"dli", - "code":"210", + "code":"372", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Table-Valued Functions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Table-Valued Functions", "githuburl":"" }, { "uri":"dli_08_0438.html", + "node_id":"dli_08_0438.xml", "product_code":"dli", - "code":"211", + "code":"373", "des":"The string_split function splits a target string into substrings based on the specified separator and returns a substring list.Create a Flink OpenSource SQL job by referr", "doc_type":"sqlreference", "kw":"string_split,Table-Valued Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"string_split", "githuburl":"" }, { "uri":"dli_08_0289.html", + "node_id":"dli_08_0289.xml", "product_code":"dli", - "code":"212", + "code":"374", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Flink Opensource SQL 1.10 Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Flink Opensource SQL 1.10 Syntax Reference", "githuburl":"" }, { "uri":"dli_08_0290.html", + "node_id":"dli_08_0290.xml", "product_code":"dli", - "code":"213", + "code":"375", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Constraints and Definitions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Constraints and Definitions", "githuburl":"" }, { "uri":"dli_08_0291.html", + "node_id":"dli_08_0291.xml", "product_code":"dli", - "code":"214", + "code":"376", "des":"STRING, BOOLEAN, BYTES, DECIMAL, TINYINT, SMALLINT, INTEGER, BIGINT, FLOAT, DOUBLE, DATE, TIME, TIMESTAMP, TIMESTAMP WITH LOCAL TIME ZONE, INTERVAL, ARRAY, MULTISET, MAP,", "doc_type":"sqlreference", "kw":"Supported Data Types,Constraints and Definitions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Supported Data Types", "githuburl":"" }, { "uri":"dli_08_0292.html", + "node_id":"dli_08_0292.xml", "product_code":"dli", - "code":"215", + "code":"377", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Syntax Definition", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Syntax Definition", "githuburl":"" }, { "uri":"dli_08_0293.html", + "node_id":"dli_08_0293.xml", "product_code":"dli", - "code":"216", + "code":"378", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Data Definition Language (DDL)", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Data Definition Language (DDL)", "githuburl":"" }, { "uri":"dli_08_0294.html", + "node_id":"dli_08_0294.xml", "product_code":"dli", - "code":"217", + "code":"379", "des":"This clause is used to create a table with a specified name.COMPUTED COLUMNA computed column is a virtual column generated using column_name AS computed_column_expression", "doc_type":"sqlreference", "kw":"CREATE TABLE,Data Definition Language (DDL),SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"CREATE TABLE", "githuburl":"" }, { "uri":"dli_08_0295.html", + "node_id":"dli_08_0295.xml", "product_code":"dli", - "code":"218", + "code":"380", "des":"Create a view with multiple layers nested in it to simplify the development process.IF NOT EXISTSIf the view already exists, nothing happens.Create a view named viewName.", "doc_type":"sqlreference", "kw":"CREATE VIEW,Data Definition Language (DDL),SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"CREATE VIEW", "githuburl":"" }, { "uri":"dli_08_0296.html", + "node_id":"dli_08_0296.xml", "product_code":"dli", - "code":"219", + "code":"381", "des":"Create a user-defined function.IF NOT EXISTSIf the function already exists, nothing happens.LANGUAGE JAVA|SCALALanguage tag is used to instruct Flink runtime how to execu", "doc_type":"sqlreference", "kw":"CREATE FUNCTION,Data Definition Language (DDL),SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"CREATE FUNCTION", "githuburl":"" }, { "uri":"dli_08_0297.html", + "node_id":"dli_08_0297.xml", "product_code":"dli", - "code":"220", + "code":"382", "des":"SyntaxPrecautionsFlink SQL uses a lexical policy for identifier (table, attribute, function names) similar to Java:The case of identifiers is preserved whether they are q", "doc_type":"sqlreference", "kw":"Data Manipulation Language (DML),Syntax Definition,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Data Manipulation Language (DML)", "githuburl":"" }, { "uri":"dli_08_0298.html", + "node_id":"dli_08_0298.xml", "product_code":"dli", - "code":"221", + "code":"383", "des":"This section describes the Flink OpenSource SQL syntax supported by DLI. For details about the parameters and examples, see the syntax description.", "doc_type":"sqlreference", "kw":"Flink OpenSource SQL 1.10 Syntax,Flink Opensource SQL 1.10 Syntax Reference,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Flink OpenSource SQL 1.10 Syntax", "githuburl":"" }, { "uri":"dli_08_0299.html", + "node_id":"dli_08_0299.xml", "product_code":"dli", - "code":"222", + "code":"384", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Data Definition Language (DDL)", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Data Definition Language (DDL)", "githuburl":"" }, { "uri":"dli_08_0300.html", + "node_id":"dli_08_0300.xml", "product_code":"dli", - "code":"223", + "code":"385", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Creating a Source Table", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Source Table", "githuburl":"" }, { "uri":"dli_08_0301.html", + "node_id":"dli_08_0301.xml", "product_code":"dli", - "code":"224", + "code":"386", "des":"Create a source stream to obtain data from Kafka as input data for jobs.Apache Kafka is a fast, scalable, and fault-tolerant distributed message publishing and subscripti", "doc_type":"sqlreference", "kw":"Kafka Source Table,Creating a Source Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Kafka Source Table", "githuburl":"" }, { "uri":"dli_08_0302.html", + "node_id":"dli_08_0302.xml", "product_code":"dli", - "code":"225", + "code":"387", "des":"Create a source stream to read data from DIS. DIS accesses user data and Flink job reads data from the DIS stream as input data for jobs. Flink jobs can quickly remove da", "doc_type":"sqlreference", "kw":"DIS Source Table,Creating a Source Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"DIS Source Table", "githuburl":"" }, { "uri":"dli_08_0303.html", + "node_id":"dli_08_0303.xml", "product_code":"dli", - "code":"226", + "code":"388", "des":"The JDBC connector is a Flink's built-in connector to read data from a database.An enhanced datasource connection with the database has been established, so that you can ", "doc_type":"sqlreference", "kw":"JDBC Source Table,Creating a Source Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"JDBC Source Table", "githuburl":"" }, { "uri":"dli_08_0304.html", + "node_id":"dli_08_0304.xml", "product_code":"dli", - "code":"227", + "code":"389", "des":"DLI reads data of Flink jobs from GaussDB(DWS). GaussDB(DWS) database kernel is compliant with PostgreSQL. The PostgreSQL database can store data of more complex types an", "doc_type":"sqlreference", "kw":"GaussDB(DWS) Source Table,Creating a Source Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"GaussDB(DWS) Source Table", "githuburl":"" }, { "uri":"dli_08_0305.html", + "node_id":"dli_08_0305.xml", "product_code":"dli", - "code":"228", + "code":"390", "des":"Create a source stream to obtain data from Redis as input for jobs.An enhanced datasource connection with Redis has been established, so that you can configure security g", "doc_type":"sqlreference", "kw":"Redis Source Table,Creating a Source Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Redis Source Table", "githuburl":"" }, { "uri":"dli_08_0306.html", + "node_id":"dli_08_0306.xml", "product_code":"dli", - "code":"229", + "code":"391", "des":"Create a source stream to obtain data from HBase as input for jobs. HBase is a column-oriented distributed cloud storage system that features enhanced reliability, excell", "doc_type":"sqlreference", "kw":"HBase Source Table,Creating a Source Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"HBase Source Table", "githuburl":"" }, { "uri":"dli_08_0358.html", + "node_id":"dli_08_0358.xml", "product_code":"dli", - "code":"230", + "code":"392", "des":"You can call APIs to obtain data from the cloud ecosystem or an open source ecosystem and use the obtained data as input of Flink jobs.The customized source class needs t", "doc_type":"sqlreference", "kw":"userDefined Source Table,Creating a Source Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"userDefined Source Table", "githuburl":"" }, { "uri":"dli_08_0307.html", + "node_id":"dli_08_0307.xml", "product_code":"dli", - "code":"231", + "code":"393", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Creating a Result Table", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Result Table", "githuburl":"" }, { "uri":"dli_08_0344.html", + "node_id":"dli_08_0344.xml", "product_code":"dli", - "code":"232", + "code":"394", "des":"DLI exports Flink job data to ClickHouse result tables.ClickHouse is a column-based database oriented to online analysis and processing. It supports SQL query and provide", "doc_type":"sqlreference", "kw":"ClickHouse Result Table,Creating a Result Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"ClickHouse Result Table", "githuburl":"" }, { "uri":"dli_08_0308.html", + "node_id":"dli_08_0308.xml", "product_code":"dli", - "code":"233", + "code":"395", "des":"DLI exports the output data of the Flink job to Kafka.Apache Kafka is a fast, scalable, and fault-tolerant distributed message publishing and subscription system. It deli", "doc_type":"sqlreference", "kw":"Kafka Result Table,Creating a Result Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Kafka Result Table", "githuburl":"" }, { "uri":"dli_08_0309.html", + "node_id":"dli_08_0309.xml", "product_code":"dli", - "code":"234", + "code":"396", "des":"DLI exports the output data of the Flink job to Kafka in upsert mode.Apache Kafka is a fast, scalable, and fault-tolerant distributed message publishing and subscription ", "doc_type":"sqlreference", "kw":"Upsert Kafka Result Table,Creating a Result Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Upsert Kafka Result Table", "githuburl":"" }, { "uri":"dli_08_0310.html", + "node_id":"dli_08_0310.xml", "product_code":"dli", - "code":"235", + "code":"397", "des":"DLI writes the Flink job output data into DIS. The data is filtered and imported to the DIS stream for future processing.DIS addresses the challenge of transmitting data ", "doc_type":"sqlreference", "kw":"DIS Result Table,Creating a Result Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"DIS Result Table", "githuburl":"" }, { "uri":"dli_08_0311.html", + "node_id":"dli_08_0311.xml", "product_code":"dli", - "code":"236", + "code":"398", "des":"DLI exports the output data of the Flink job to RDS.An enhanced datasource connection with the database has been established, so that you can configure security group rul", "doc_type":"sqlreference", "kw":"JDBC Result Table,Creating a Result Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"JDBC Result Table", "githuburl":"" }, { "uri":"dli_08_0312.html", + "node_id":"dli_08_0312.xml", "product_code":"dli", - "code":"237", + "code":"399", "des":"DLI outputs the Flink job output data to GaussDB(DWS). GaussDB(DWS) database kernel is compliant with PostgreSQL. The PostgreSQL database can store data of more complex t", "doc_type":"sqlreference", "kw":"GaussDB(DWS) Result Table,Creating a Result Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"GaussDB(DWS) Result Table", "githuburl":"" }, { "uri":"dli_08_0313.html", + "node_id":"dli_08_0313.xml", "product_code":"dli", - "code":"238", + "code":"400", "des":"DLI exports the output data of the Flink job to Redis. Redis is a storage system that supports multiple types of data structures such as key-value. It can be used in scen", "doc_type":"sqlreference", "kw":"Redis Result Table,Creating a Result Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Redis Result Table", "githuburl":"" }, { "uri":"dli_08_0314.html", + "node_id":"dli_08_0314.xml", "product_code":"dli", - "code":"239", + "code":"401", "des":"DLI exports Flink job output data to SMN.SMN provides reliable and flexible large-scale message notification services to DLI. It significantly simplifies system coupling ", "doc_type":"sqlreference", "kw":"SMN Result Table,Creating a Result Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"SMN Result Table", "githuburl":"" }, { "uri":"dli_08_0315.html", + "node_id":"dli_08_0315.xml", "product_code":"dli", - "code":"240", + "code":"402", "des":"DLI outputs the job data to HBase. HBase is a column-oriented distributed cloud storage system that features enhanced reliability, excellent performance, and elastic scal", "doc_type":"sqlreference", "kw":"HBase Result Table,Creating a Result Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"HBase Result Table", "githuburl":"" }, { "uri":"dli_08_0316.html", + "node_id":"dli_08_0316.xml", "product_code":"dli", - "code":"241", + "code":"403", "des":"DLI exports Flink job output data to Elasticsearch of Cloud Search Service (CSS). Elasticsearch is a popular enterprise-class Lucene-powered search server and provides th", "doc_type":"sqlreference", "kw":"Elasticsearch Result Table,Creating a Result Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Elasticsearch Result Table", "githuburl":"" }, { "uri":"dli_08_0348.html", + "node_id":"dli_08_0348.xml", "product_code":"dli", - "code":"242", + "code":"404", "des":"OpenTSDB is a distributed, scalable time series database based on HBase. OpenTSDB is designed to collect monitoring information of a large-scale cluster and query data in", "doc_type":"sqlreference", "kw":"OpenTSDB Result Table,Creating a Result Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"OpenTSDB Result Table", "githuburl":"" }, { "uri":"dli_08_0347.html", + "node_id":"dli_08_0347.xml", "product_code":"dli", - "code":"243", + "code":"405", "des":"Write your Java code to insert the processed data into a specified database supported by your cloud service.Implement the custom sink class :The custom sink class is inhe", "doc_type":"sqlreference", "kw":"User-defined Result Table,Creating a Result Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"User-defined Result Table", "githuburl":"" }, { "uri":"dli_08_0345.html", + "node_id":"dli_08_0345.xml", "product_code":"dli", - "code":"244", + "code":"406", "des":"The print connector exports your data output to the error file or the out file of TaskManager. It is mainly used for code debugging and output viewing.Read data from Kafk", "doc_type":"sqlreference", "kw":"Print Result Table,Creating a Result Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Print Result Table", "githuburl":"" }, { "uri":"dli_08_0346.html", + "node_id":"dli_08_0346.xml", "product_code":"dli", - "code":"245", + "code":"407", "des":"You can create a file system result table to export data to a file system such as HDFS or OBS. After the data is generated, a non-DLI table can be created directly accord", "doc_type":"sqlreference", "kw":"File System Result Table,Creating a Result Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"File System Result Table", "githuburl":"" }, { "uri":"dli_08_0317.html", + "node_id":"dli_08_0317.xml", "product_code":"dli", - "code":"246", + "code":"408", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Creating a Dimension Table", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Dimension Table", "githuburl":"" }, { "uri":"dli_08_0318.html", + "node_id":"dli_08_0318.xml", "product_code":"dli", - "code":"247", + "code":"409", "des":"Create a JDBC dimension table to connect to the source stream.You have created a JDBC instance for your account.The RDS table is used to connect to the source stream.CREA", "doc_type":"sqlreference", "kw":"JDBC Dimension Table,Creating a Dimension Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"JDBC Dimension Table", "githuburl":"" }, { "uri":"dli_08_0319.html", + "node_id":"dli_08_0319.xml", "product_code":"dli", - "code":"248", + "code":"410", "des":"Create a GaussDB(DWS) dimension table to connect to the input stream.You have created a GaussDB(DWS) instance for your account.Use an RDS table to connect to the source s", "doc_type":"sqlreference", "kw":"GaussDB(DWS) Dimension Table,Creating a Dimension Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"GaussDB(DWS) Dimension Table", "githuburl":"" }, { "uri":"dli_08_0320.html", + "node_id":"dli_08_0320.xml", "product_code":"dli", - "code":"249", + "code":"411", "des":"Create a Hbase dimension table to connect to the source stream.An enhanced datasource connection has been created for DLI to connect to HBase, so that jobs can run on the", "doc_type":"sqlreference", "kw":"HBase Dimension Table,Creating a Dimension Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"HBase Dimension Table", "githuburl":"" }, { "uri":"dli_08_0321.html", + "node_id":"dli_08_0321.xml", "product_code":"dli", - "code":"250", + "code":"412", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Data Manipulation Language (DML)", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Data Manipulation Language (DML)", "githuburl":"" }, { "uri":"dli_08_0322.html", + "node_id":"dli_08_0322.xml", "product_code":"dli", - "code":"251", + "code":"413", "des":"SyntaxDescriptionThis clause is used to select data from a table.ALL indicates that all results are returned.DISTINCT indicates that the duplicated results are removed.Pr", "doc_type":"sqlreference", "kw":"SELECT,Data Manipulation Language (DML),SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"SELECT", "githuburl":"" }, { "uri":"dli_08_0323.html", + "node_id":"dli_08_0323.xml", "product_code":"dli", - "code":"252", + "code":"414", "des":"SyntaxDescriptionUNION is used to return the union set of multiple query results.INTERSECT is used to return the intersection of multiple query results.EXCEPT is used to ", "doc_type":"sqlreference", "kw":"Set Operations,Data Manipulation Language (DML),SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Set Operations", "githuburl":"" }, { "uri":"dli_08_0324.html", + "node_id":"dli_08_0324.xml", "product_code":"dli", - "code":"253", + "code":"415", "des":"DescriptionGroup Window is defined in GROUP BY. One record is generated from each group. Group Window involves the following functions:Array functionsArray functionsGroup", "doc_type":"sqlreference", "kw":"Window,Data Manipulation Language (DML),SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Window", "githuburl":"" }, { "uri":"dli_08_0325.html", + "node_id":"dli_08_0325.xml", "product_code":"dli", - "code":"254", + "code":"416", "des":"SyntaxPrecautionsCurrently, only equi-joins are supported, for example, joins that have at least one conjunctive condition with an equality predicate. Arbitrary cross or ", "doc_type":"sqlreference", "kw":"JOIN,Data Manipulation Language (DML),SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"JOIN", "githuburl":"" }, { "uri":"dli_08_0326.html", + "node_id":"dli_08_0326.xml", "product_code":"dli", - "code":"255", + "code":"417", "des":"FunctionThis clause is used to sort data in ascending order on a time attribute.PrecautionsCurrently, only sorting by time attribute is supported.ExampleSort data in asce", "doc_type":"sqlreference", "kw":"OrderBy & Limit,Data Manipulation Language (DML),SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"OrderBy & Limit", "githuburl":"" }, { "uri":"dli_08_0327.html", + "node_id":"dli_08_0327.xml", "product_code":"dli", - "code":"256", + "code":"418", "des":"Top-N queries ask for the N smallest or largest values ordered by columns. Both smallest and largest values sets are considered Top-N queries. Top-N queries are useful in", "doc_type":"sqlreference", "kw":"Top-N,Data Manipulation Language (DML),SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Top-N", "githuburl":"" }, { "uri":"dli_08_0328.html", + "node_id":"dli_08_0328.xml", "product_code":"dli", - "code":"257", + "code":"419", "des":"Deduplication removes rows that duplicate over a set of columns, keeping only the first one or the last one.ROW_NUMBER(): Assigns a unique, sequential number to each row,", "doc_type":"sqlreference", "kw":"Deduplication,Data Manipulation Language (DML),SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Deduplication", "githuburl":"" }, { "uri":"dli_08_0329.html", + "node_id":"dli_08_0329.xml", "product_code":"dli", - "code":"258", + "code":"420", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Functions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Functions", "githuburl":"" }, { "uri":"dli_08_0330.html", + "node_id":"dli_08_0330.xml", "product_code":"dli", - "code":"259", + "code":"421", "des":"DLI supports the following three types of user-defined functions (UDFs):Regular UDF: takes in one or more input parameters and returns a single result.User-defined table-", "doc_type":"sqlreference", "kw":"User-Defined Functions,Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"User-Defined Functions", "githuburl":"" }, { "uri":"dli_08_0331.html", + "node_id":"dli_08_0331.xml", "product_code":"dli", - "code":"260", + "code":"422", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Built-In Functions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Built-In Functions", "githuburl":"" }, { "uri":"dli_08_0332.html", + "node_id":"dli_08_0332.xml", "product_code":"dli", - "code":"261", + "code":"423", "des":"All data types can be compared by using relational operators and the result is returned as a BOOLEAN value.Relationship operators are binary operators. Two compared data ", "doc_type":"sqlreference", "kw":"Mathematical Operation Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Mathematical Operation Functions", "githuburl":"" }, { "uri":"dli_08_0333.html", + "node_id":"dli_08_0333.xml", "product_code":"dli", - "code":"262", + "code":"424", "des":"SyntaxExampleTest input data.Test the data source kafka. The message content is as follows:\"{name:James,age:24,sex:male,grade:{math:95,science:[80,85],english:100}}\"\n\"{na", "doc_type":"sqlreference", "kw":"String Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"String Functions", "githuburl":"" }, { "uri":"dli_08_0334.html", + "node_id":"dli_08_0334.xml", "product_code":"dli", - "code":"263", + "code":"425", "des":"Table 1 lists the temporal functions supported by Flink OpenSource SQL.FunctionReturns a date parsed from string in form of yyyy-MM-dd.Returns a date parsed from string i", "doc_type":"sqlreference", "kw":"Temporal Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Temporal Functions", "githuburl":"" }, { "uri":"dli_08_0335.html", + "node_id":"dli_08_0335.xml", "product_code":"dli", - "code":"264", + "code":"426", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Conditional Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Conditional Functions", "githuburl":"" }, { "uri":"dli_08_0336.html", + "node_id":"dli_08_0336.xml", "product_code":"dli", - "code":"265", + "code":"427", "des":"This function is used to forcibly convert types.If the input is NULL, NULL is returned.The following example converts the amount value to an integer.Flink jobs do not sup", "doc_type":"sqlreference", "kw":"Type Conversion Function,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Type Conversion Function", "githuburl":"" }, { "uri":"dli_08_0337.html", + "node_id":"dli_08_0337.xml", "product_code":"dli", - "code":"266", + "code":"428", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Collection Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Collection Functions", "githuburl":"" }, { "uri":"dli_08_0338.html", + "node_id":"dli_08_0338.xml", "product_code":"dli", - "code":"267", + "code":"429", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Value Construction Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Value Construction Functions", "githuburl":"" }, { "uri":"dli_08_0339.html", + "node_id":"dli_08_0339.xml", "product_code":"dli", - "code":"268", + "code":"430", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Value Access Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Value Access Functions", "githuburl":"" }, { "uri":"dli_08_0340.html", + "node_id":"dli_08_0340.xml", "product_code":"dli", - "code":"269", + "code":"431", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Hash Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Hash Functions", "githuburl":"" }, { "uri":"dli_08_0341.html", + "node_id":"dli_08_0341.xml", "product_code":"dli", - "code":"270", + "code":"432", "des":"An aggregate function performs a calculation operation on a set of input values and returns a value. For example, the COUNT function counts the number of rows retrieved b", "doc_type":"sqlreference", "kw":"Aggregate Function,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Aggregate Function", "githuburl":"" }, { "uri":"dli_08_0342.html", + "node_id":"dli_08_0342.xml", "product_code":"dli", - "code":"271", + "code":"433", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Table-Valued Functions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Table-Valued Functions", "githuburl":"" }, { "uri":"dli_08_0357.html", + "node_id":"dli_08_0357.xml", "product_code":"dli", - "code":"272", + "code":"434", "des":"The split_cursor function can convert one row of records into multiple rows or convert one column of records into multiple columns. 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The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Creating a Sink Stream", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Sink Stream", "githuburl":"" }, { "uri":"dli_08_0243.html", + "node_id":"dli_08_0243.xml", "product_code":"dli", - "code":"286", + "code":"448", "des":"DLI exports the job output data to HBase of CloudTable. 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It can be used in scen", "doc_type":"sqlreference", "kw":"DCS Sink Stream,Creating a Sink Stream,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"DCS Sink Stream", "githuburl":"" }, { "uri":"dli_08_0249.html", + "node_id":"dli_08_0249.xml", "product_code":"dli", - "code":"291", + "code":"453", "des":"DLI outputs the job output data to Document Database Service (DDS).DDS is compatible with the MongoDB protocol and is secure, highly available, reliable, scalable, and ea", "doc_type":"sqlreference", "kw":"DDS Sink Stream,Creating a Sink Stream,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"DDS Sink Stream", "githuburl":"" }, { "uri":"dli_08_0241.html", + "node_id":"dli_08_0241.xml", "product_code":"dli", - "code":"292", + "code":"454", "des":"DLI writes the Flink job output data into DIS. 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It significantly simplifies system coupling ", "doc_type":"sqlreference", "kw":"SMN Sink Stream,Creating a Sink Stream,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"SMN Sink Stream", "githuburl":"" }, { "uri":"dli_08_0258.html", + "node_id":"dli_08_0258.xml", "product_code":"dli", - "code":"303", + "code":"465", "des":"The temporary stream is used to simplify SQL logic. If complex SQL logic is followed, write SQL statements concatenated with temporary streams. The temporary stream is ju", "doc_type":"sqlreference", "kw":"Creating a Temporary Stream,Flink SQL Syntax,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Temporary Stream", "githuburl":"" }, { "uri":"dli_08_0259.html", + "node_id":"dli_08_0259.xml", "product_code":"dli", - "code":"304", + "code":"466", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Creating a Dimension Table", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Dimension Table", "githuburl":"" }, { "uri":"dli_08_0260.html", + "node_id":"dli_08_0260.xml", "product_code":"dli", - "code":"305", + "code":"467", "des":"Create a Redis table to connect to the source stream.For details about the JOIN syntax, see JOIN Between Stream Data and Table Data.Redis clusters are not supported.Ensur", "doc_type":"sqlreference", "kw":"Creating a Redis Table,Creating a Dimension Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating a Redis Table", "githuburl":"" }, { "uri":"dli_08_0261.html", + "node_id":"dli_08_0261.xml", "product_code":"dli", - "code":"306", + "code":"468", "des":"Create an RDS/DWS table to connect to the source stream.For details about the JOIN syntax, see JOIN.Ensure that you have created a PostgreSQL or MySQL RDS instance in RDS", "doc_type":"sqlreference", "kw":"Creating an RDS Table,Creating a Dimension Table,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Creating an RDS Table", "githuburl":"" }, { "uri":"dli_08_0272.html", + "node_id":"dli_08_0272.xml", "product_code":"dli", - "code":"307", + "code":"469", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Custom Stream Ecosystem", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Custom Stream Ecosystem", "githuburl":"" }, { "uri":"dli_08_0273.html", + "node_id":"dli_08_0273.xml", "product_code":"dli", - "code":"308", + "code":"470", "des":"Compile code to obtain data from the desired cloud ecosystem or open-source ecosystem as the input data of Flink jobs.The user-defined source class needs to inherit the R", "doc_type":"sqlreference", "kw":"Custom Source Stream,Custom Stream Ecosystem,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Custom Source Stream", "githuburl":"" }, { "uri":"dli_08_0274.html", + "node_id":"dli_08_0274.xml", "product_code":"dli", - "code":"309", + "code":"471", "des":"Compile code to write the data processed by DLI to a specified cloud ecosystem or open-source ecosystem.The user-defined sink class needs to inherit the RichSinkFunction ", "doc_type":"sqlreference", "kw":"Custom Sink Stream,Custom Stream Ecosystem,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Custom Sink Stream", "githuburl":"" }, { "uri":"dli_08_0207.html", + "node_id":"dli_08_0207.xml", "product_code":"dli", - "code":"310", + "code":"472", "des":"Data type is a basic attribute of data and used to distinguish different types of data. 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The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Built-In Functions", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Built-In Functions", "githuburl":"" }, { "uri":"dli_08_0191.html", + "node_id":"dli_08_0191.xml", "product_code":"dli", - "code":"312", + "code":"474", "des":"All data types can be compared by using relational operators and the result is returned as a BOOLEAN value.Relationship operators are binary operators. Two compared data ", "doc_type":"sqlreference", "kw":"Mathematical Operation Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Mathematical Operation Functions", "githuburl":"" }, { "uri":"dli_08_0096.html", + "node_id":"dli_08_0096.xml", "product_code":"dli", - "code":"313", - "des":"The common character string functions of DLI are as follows:FunctionConcatenates two character strings.Concatenates two character strings.SyntaxVARCHAR VARCHAR a || VARCH", + "code":"475", + "des":"The common string functions of DLI are as follows:FunctionConcatenates two strings.Concatenates two strings.SyntaxVARCHAR VARCHAR a || VARCHAR bParametersa: string.b: str", "doc_type":"sqlreference", "kw":"String Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"String Functions", "githuburl":"" }, { "uri":"dli_08_0097.html", + "node_id":"dli_08_0097.xml", "product_code":"dli", - "code":"314", + "code":"476", "des":"Table 1 lists the time functions supported by Flink SQL.None", "doc_type":"sqlreference", "kw":"Temporal Functions,Built-In Functions,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Temporal Functions", "githuburl":"" }, { "uri":"dli_08_0112.html", + "node_id":"dli_08_0112.xml", "product_code":"dli", - "code":"315", + "code":"477", "des":"This function is used to forcibly convert types.If the input is NULL, NULL is returned.Flink jobs do not support the conversion of bigint to timestamp using CAST. 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It can be assigned to a field, table, view, or subquery.", "doc_type":"sqlreference", "kw":"alias,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"alias", "githuburl":"" }, { "uri":"dli_08_0004.html", + "node_id":"dli_08_0004.xml", "product_code":"dli", - "code":"336", + "code":"498", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. 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It is usually a field name, which is the same as col_name.", "doc_type":"sqlreference", "kw":"col,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"col", "githuburl":"" }, { "uri":"dli_08_0010.html", + "node_id":"dli_08_0010.xml", "product_code":"dli", - "code":"341", + "code":"503", "des":"None.Column (field) description, which must be STRING type and cannot exceed 256 bytes.", "doc_type":"sqlreference", "kw":"col_comment,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"col_comment", "githuburl":"" }, { "uri":"dli_08_0011.html", + "node_id":"dli_08_0011.xml", "product_code":"dli", - "code":"342", + "code":"504", "des":"None.Column name, which must be STRING type and cannot exceed 128 bytes.", "doc_type":"sqlreference", "kw":"col_name,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"col_name", "githuburl":"" }, { "uri":"dli_08_0012.html", + "node_id":"dli_08_0012.xml", "product_code":"dli", - "code":"343", + "code":"505", "des":"None.Field list, which consists of one col_name or more. 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The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"join_condition,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"join_condition", "githuburl":"" }, { "uri":"dli_08_0030.html", + "node_id":"dli_08_0030.xml", "product_code":"dli", - "code":"358", + "code":"520", "des":"None.The condition of an inequality join.", "doc_type":"sqlreference", "kw":"non_equi_join_condition,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"non_equi_join_condition", "githuburl":"" }, { "uri":"dli_08_0031.html", + "node_id":"dli_08_0031.xml", "product_code":"dli", - "code":"359", + "code":"521", "des":"None.Maximum number of output lines specified by LIMIT. Which must be INT type.", "doc_type":"sqlreference", "kw":"number,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"number", "githuburl":"" }, { "uri":"dli_08_0034.html", + "node_id":"dli_08_0034.xml", "product_code":"dli", - "code":"360", + "code":"522", "des":"None.Partition column name, that is, partition field name, which must be STRING type.", "doc_type":"sqlreference", "kw":"partition_col_name,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"partition_col_name", "githuburl":"" }, { "uri":"dli_08_0035.html", + "node_id":"dli_08_0035.xml", "product_code":"dli", - "code":"361", + "code":"523", "des":"None.Partition column value, that is, partition field value.", "doc_type":"sqlreference", "kw":"partition_col_value,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"partition_col_value", "githuburl":"" }, { "uri":"dli_08_0036.html", + "node_id":"dli_08_0036.xml", "product_code":"dli", - "code":"362", + "code":"524", "des":"partition_specs : (partition_col_name = partition_col_value, partition_col_name = partition_col_value, ...);Table partition list, which is expressed by using key=value pa", "doc_type":"sqlreference", "kw":"partition_specs,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"partition_specs", "githuburl":"" }, { "uri":"dli_08_0037.html", + "node_id":"dli_08_0037.xml", "product_code":"dli", - "code":"363", + "code":"525", "des":"None.Property name, which must be STRING type.", "doc_type":"sqlreference", "kw":"property_name,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"property_name", "githuburl":"" }, { "uri":"dli_08_0038.html", + "node_id":"dli_08_0038.xml", "product_code":"dli", - "code":"364", + "code":"526", "des":"None.Property value, which must be STRING type.", "doc_type":"sqlreference", "kw":"property_value,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"property_value", "githuburl":"" }, { "uri":"dli_08_0039.html", + "node_id":"dli_08_0039.xml", "product_code":"dli", - "code":"365", + "code":"527", "des":"None.Pattern matching string, which supports wildcard matching.", "doc_type":"sqlreference", "kw":"regex_expression,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"regex_expression", "githuburl":"" }, { "uri":"dli_08_0040.html", + "node_id":"dli_08_0040.xml", "product_code":"dli", - "code":"366", + "code":"528", "des":"None.Returned result for the THEN clause of the CASE WHEN statement.", "doc_type":"sqlreference", "kw":"result_expression,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"result_expression", "githuburl":"" }, { "uri":"dli_08_0042.html", + "node_id":"dli_08_0042.xml", "product_code":"dli", - "code":"367", + "code":"529", "des":"None.Query clause for the basic SELECT statement.", "doc_type":"sqlreference", "kw":"select_statement,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"select_statement", "githuburl":"" }, { "uri":"dli_08_0043.html", + "node_id":"dli_08_0043.xml", "product_code":"dli", - "code":"368", + "code":"530", "des":"None.Separator, which can be customized by users, for example, comma (,), semicolon (;), and colon (:). Which must be CHAR type.", "doc_type":"sqlreference", "kw":"separator,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"separator", "githuburl":"" }, { "uri":"dli_08_0045.html", + "node_id":"dli_08_0045.xml", "product_code":"dli", - "code":"369", + "code":"531", "des":"None.SQL statement containing the common expression defined by cte_name.", "doc_type":"sqlreference", "kw":"sql_containing_cte_name,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"sql_containing_cte_name", "githuburl":"" }, { "uri":"dli_08_0046.html", + "node_id":"dli_08_0046.xml", "product_code":"dli", - "code":"370", + "code":"532", "des":"None.Subquery.", "doc_type":"sqlreference", "kw":"sub_query,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"sub_query", "githuburl":"" }, { "uri":"dli_08_0047.html", + "node_id":"dli_08_0047.xml", "product_code":"dli", - "code":"371", + "code":"533", "des":"None.Table description, which must be STRING type and cannot exceed 256 bytes.", "doc_type":"sqlreference", "kw":"table_comment,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"table_comment", "githuburl":"" }, { "uri":"dli_08_0048.html", + "node_id":"dli_08_0048.xml", "product_code":"dli", - "code":"372", + "code":"534", "des":"NoneTable name, which cannot exceed 128 bytes. The string type and \"$\" symbol are supported.", "doc_type":"sqlreference", "kw":"table_name,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"table_name", "githuburl":"" }, { "uri":"dli_08_0049.html", + "node_id":"dli_08_0049.xml", "product_code":"dli", - "code":"373", + "code":"535", "des":"None.Table property list, which is expressed by using key=value pairs. key represents property_name, and value represents property_value. If there is more than one key=va", "doc_type":"sqlreference", "kw":"table_properties,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"table_properties", "githuburl":"" }, { "uri":"dli_08_0050.html", + "node_id":"dli_08_0050.xml", "product_code":"dli", - "code":"374", + "code":"536", "des":"None.Table or view name, which must be STRING type. It can also be a subquery. If it is subquery, an alias must also be provided.", "doc_type":"sqlreference", "kw":"table_reference,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"table_reference", "githuburl":"" }, { "uri":"dli_08_0053.html", + "node_id":"dli_08_0053.xml", "product_code":"dli", - "code":"375", + "code":"537", "des":"None.When expression of the CASE WHEN statement. It is used for matching with the input expression.", "doc_type":"sqlreference", "kw":"when_expression,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"when_expression", "githuburl":"" }, { "uri":"dli_08_0054.html", + "node_id":"dli_08_0054.xml", "product_code":"dli", - "code":"376", + "code":"538", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"where_condition,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"where_condition", "githuburl":"" }, { "uri":"dli_08_0055.html", + "node_id":"dli_08_0055.xml", "product_code":"dli", - "code":"377", - "des":"None.Analysis window function. For details, see Window Functions.", + "code":"539", + "des":"NoneAnalysis window function.", "doc_type":"sqlreference", "kw":"window_function,Identifiers,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"window_function", "githuburl":"" }, { "uri":"dli_08_0060.html", + "node_id":"dli_08_0060.xml", "product_code":"dli", - "code":"378", + "code":"540", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Operators", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Operators", "githuburl":"" }, { "uri":"dli_08_0061.html", + "node_id":"dli_08_0061.xml", "product_code":"dli", - "code":"379", + "code":"541", "des":"All data types can be compared by using relational operators and the result is returned as a BOOLEAN value.Relationship operators are binary operators. Two compared data ", "doc_type":"sqlreference", "kw":"Relational Operators,Operators,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Relational Operators", "githuburl":"" }, { "uri":"dli_08_0062.html", + "node_id":"dli_08_0062.xml", "product_code":"dli", - "code":"380", + "code":"542", "des":"Arithmetic operators include binary operators and unary operators. For both types of operators, the returned results are numbers. Table 1 lists the arithmetic operators s", "doc_type":"sqlreference", "kw":"Arithmetic Operators,Operators,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Arithmetic Operators", "githuburl":"" }, { "uri":"dli_08_0063.html", + "node_id":"dli_08_0063.xml", "product_code":"dli", - "code":"381", + "code":"543", "des":"Common logical operators include AND, OR, and NOT. The operation result can be TRUE, FALSE, or NULL (which means unknown). The priorities of the operators are as follows:", "doc_type":"sqlreference", "kw":"Logical Operators,Operators,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference" + } + ], "title":"Logical Operators", "githuburl":"" }, { "uri":"dli_08_00005.html", + "node_id":"dli_08_00005.xml", "product_code":"dli", - "code":"382", + "code":"544", "des":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "doc_type":"sqlreference", "kw":"Change History,SQL Syntax Reference", + "search_title":"", + "metedata":[ + { + "prodname":"dli", + "documenttype":"sqlreference", + "IsBot":"Yes", + "opensource":"true" + } + ], "title":"Change History", "githuburl":"" } diff --git a/docs/dli/sqlreference/CLASS.TXT.json b/docs/dli/sqlreference/CLASS.TXT.json index 2925ad5d..4116898a 100644 --- a/docs/dli/sqlreference/CLASS.TXT.json +++ b/docs/dli/sqlreference/CLASS.TXT.json @@ -26,6 +26,15 @@ "p_code":"1", "code":"3" }, + { + "desc":"This section describes the open source Spark SQL syntax supported by DLI. For details about the syntax, parameters, and examples, see Spark SQL Syntax.", + "product_code":"dli", + "title":"Spark Open Source Commands", + "uri":"dli_08_0477.html", + "doc_type":"sqlreference", + "p_code":"1", + "code":"4" + }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "product_code":"dli", @@ -33,7 +42,7 @@ "uri":"dli_08_0070.html", "doc_type":"sqlreference", "p_code":"1", - "code":"4" + "code":"5" }, { "desc":"This statement is used to create a database.IF NOT EXISTS: Prevents system errors if the database to be created exists.COMMENT: Describes a database.DBPROPERTIES: Specifi", @@ -41,8 +50,8 @@ "title":"Creating a Database", "uri":"dli_08_0071.html", "doc_type":"sqlreference", - "p_code":"4", - "code":"5" + "p_code":"5", + "code":"6" }, { "desc":"This statement is used to delete a database.IF EXISTS: Prevents system errors if the database to be deleted does not exist.DATABASE and SCHEMA can be used interchangeably", @@ -50,8 +59,8 @@ "title":"Deleting a Database", "uri":"dli_08_0072.html", "doc_type":"sqlreference", - "p_code":"4", - "code":"6" + "p_code":"5", + "code":"7" }, { "desc":"This syntax is used to view the information about a specified database, including the database name and database description.EXTENDED: Displays the database properties.If", @@ -59,8 +68,8 @@ "title":"Viewing a Specified Database", "uri":"dli_08_0073.html", "doc_type":"sqlreference", - "p_code":"4", - "code":"7" + "p_code":"5", + "code":"8" }, { "desc":"This syntax is used to query all current databases.NoneKeyword DATABASES is equivalent to SCHEMAS. You can use either of them in this statement.View all the current datab", @@ -68,8 +77,8 @@ "title":"Viewing All Databases", "uri":"dli_08_0074.html", "doc_type":"sqlreference", - "p_code":"4", - "code":"8" + "p_code":"5", + "code":"9" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -78,7 +87,7 @@ "uri":"dli_08_0223.html", "doc_type":"sqlreference", "p_code":"1", - "code":"9" + "code":"10" }, { "desc":"Create an OBS table using the DataSource syntax.The main differences between the DataSource and the Hive syntax lie in the supported data formats and the number of suppor", @@ -86,8 +95,8 @@ "title":"Creating an OBS Table Using the DataSource Syntax", "uri":"dli_08_0076.html", "doc_type":"sqlreference", - "p_code":"9", - "code":"10" + "p_code":"10", + "code":"11" }, { "desc":"This statement is used to create an OBS table using the Hive syntax. The main differences between the DataSource and the Hive syntax lie in the supported data formats and", @@ -95,8 +104,8 @@ "title":"Creating an OBS Table Using the Hive Syntax", "uri":"dli_08_0077.html", "doc_type":"sqlreference", - "p_code":"9", - "code":"11" + "p_code":"10", + "code":"12" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -105,7 +114,7 @@ "uri":"dli_08_0224.html", "doc_type":"sqlreference", "p_code":"1", - "code":"12" + "code":"13" }, { "desc":"This DataSource syntax can be used to create a DLI table. The main differences between the DataSource and the Hive syntax lie in the supported data formats and the number", @@ -113,8 +122,8 @@ "title":"Creating a DLI Table Using the DataSource Syntax", "uri":"dli_08_0098.html", "doc_type":"sqlreference", - "p_code":"12", - "code":"13" + "p_code":"13", + "code":"14" }, { "desc":"This Hive syntax is used to create a DLI table. The main differences between the DataSource and the Hive syntax lie in the supported data formats and the number of suppor", @@ -122,8 +131,8 @@ "title":"Creating a DLI Table Using the Hive Syntax", "uri":"dli_08_0204.html", "doc_type":"sqlreference", - "p_code":"12", - "code":"14" + "p_code":"13", + "code":"15" }, { "desc":"This statement is used to delete tables.If the table is stored in OBS, only the metadata is deleted. The data stored on OBS is not deleted.If the table is stored in DLI, ", @@ -132,7 +141,7 @@ "uri":"dli_08_0087.html", "doc_type":"sqlreference", "p_code":"1", - "code":"15" + "code":"16" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -141,7 +150,7 @@ "uri":"dli_08_0089.html", "doc_type":"sqlreference", "p_code":"1", - "code":"16" + "code":"17" }, { "desc":"This statement is used to view all tables and views in the current database.FROM/IN: followed by the name of a database whose tables and views will be displayed.NoneCreat", @@ -149,8 +158,8 @@ "title":"Viewing All Tables", "uri":"dli_08_0090.html", "doc_type":"sqlreference", - "p_code":"16", - "code":"17" + "p_code":"17", + "code":"18" }, { "desc":"This statement is used to show the statements for creating a table.CREATE TABLE: statement for creating a tableThe table specified in this statement must exist. Otherwise", @@ -158,8 +167,8 @@ "title":"Viewing Table Creation Statements", "uri":"dli_08_0091.html", "doc_type":"sqlreference", - "p_code":"16", - "code":"18" + "p_code":"17", + "code":"19" }, { "desc":"Check the properties of a table.TBLPROPERTIES: This statement allows you to add a key/value property to a table.property_name is case sensitive. You cannot specify multip", @@ -167,8 +176,8 @@ "title":"Viewing Table Properties", "uri":"dli_08_0092.html", "doc_type":"sqlreference", - "p_code":"16", - "code":"19" + "p_code":"17", + "code":"20" }, { "desc":"This statement is used to query all columns in a specified table.COLUMNS: columns in the current tableFROM/IN: followed by the name of a database whose tables and views w", @@ -176,8 +185,8 @@ "title":"Viewing All Columns in a Specified Table", "uri":"dli_08_0093.html", "doc_type":"sqlreference", - "p_code":"16", - "code":"20" + "p_code":"17", + "code":"21" }, { "desc":"This statement is used to view all partitions in a specified table.PARTITIONS: partitions in a specified tablePARTITION: a specified partitionThe table specified in this ", @@ -185,8 +194,8 @@ "title":"Viewing All Partitions in a Specified Table", "uri":"dli_08_0094.html", "doc_type":"sqlreference", - "p_code":"16", - "code":"21" + "p_code":"17", + "code":"22" }, { "desc":"This statement is used to view the table statistics. The names and data types of all columns in a specified table will be returned.EXTENDED: displays all metadata of the ", @@ -194,8 +203,8 @@ "title":"Viewing Table Statistics", "uri":"dli_08_0105.html", "doc_type":"sqlreference", - "p_code":"16", - "code":"22" + "p_code":"17", + "code":"23" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -204,7 +213,7 @@ "uri":"dli_08_0262.html", "doc_type":"sqlreference", "p_code":"1", - "code":"23" + "code":"24" }, { "desc":"This statement is used to add one or more new columns to a table.ADD COLUMNS: columns to addCOMMENT: column descriptionDo not run this SQL statement concurrently. Otherwi", @@ -212,8 +221,17 @@ "title":"Adding a Column", "uri":"dli_08_0263.html", "doc_type":"sqlreference", - "p_code":"23", - "code":"24" + "p_code":"24", + "code":"25" + }, + { + "desc":"You can modify the column comments of non-partitioned or partitioned tables.CHANGE COLUMN: Modify a column.COMMENT: column descriptionChange the comment of the c1 column ", + "product_code":"dli", + "title":"Modifying Column Comments", + "uri":"dli_08_0470.html", + "doc_type":"sqlreference", + "p_code":"24", + "code":"26" }, { "desc":"DLI controls multiple versions of backup data for restoration. After the multiversion function is enabled, the system automatically backs up table data when you delete or", @@ -221,8 +239,8 @@ "title":"Enabling or Disabling Multiversion Backup", "uri":"dli_08_0354.html", "doc_type":"sqlreference", - "p_code":"23", - "code":"25" + "p_code":"24", + "code":"27" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -231,7 +249,7 @@ "uri":"dli_08_0080.html", "doc_type":"sqlreference", "p_code":"1", - "code":"26" + "code":"28" }, { "desc":"After an OBS partitioned table is created, no partition information is generated for the table. Partition information is generated only after you:Insert data to the OBS p", @@ -239,8 +257,8 @@ "title":"Adding Partition Data (Only OBS Tables Supported)", "uri":"dli_08_0081.html", "doc_type":"sqlreference", - "p_code":"26", - "code":"27" + "p_code":"28", + "code":"29" }, { "desc":"This statement is used to rename partitions.PARTITION: a specified partitionRENAME: new name of the partitionThis statement is used for OBS table operations.The table and", @@ -248,26 +266,26 @@ "title":"Renaming a Partition (Only OBS Tables Supported)", "uri":"dli_08_0082.html", "doc_type":"sqlreference", - "p_code":"26", - "code":"28" + "p_code":"28", + "code":"30" }, { - "desc":"Deletes one or more partitions from a partitioned table.The table in which partitions are to be deleted must exist. Otherwise, an error is reported.The to-be-deleted part", + "desc":"This statement is used to delete one or more partitions from a partitioned table.Partitioned tables are classified into OBS tables and DLI tables. You can delete one or m", "product_code":"dli", "title":"Deleting a Partition", "uri":"dli_08_0083.html", "doc_type":"sqlreference", - "p_code":"26", - "code":"29" + "p_code":"28", + "code":"31" }, { - "desc":"This statement is used to delete one or more partitions based on specified conditions.This statement is used for OBS table operations only.The table in which partitions a", + "desc":"This statement is used to delete one or more partitions based on specified conditions.This statement is only used for OBS tables.The table in which partitions are to be d", "product_code":"dli", - "title":"Deleting Partitions by Specifying Filter Criteria (Only OBS Tables Supported)", + "title":"Deleting Partitions by Specifying Filter Criteria (Only Supported on OBS Tables)", "uri":"dli_08_0343.html", "doc_type":"sqlreference", - "p_code":"26", - "code":"30" + "p_code":"28", + "code":"32" }, { "desc":"This statement is used to modify the positions of table partitions.PARTITION: a specified partitionLOCATION: path of the partitionFor a table partition whose position is ", @@ -275,8 +293,8 @@ "title":"Altering the Partition Location of a Table (Only OBS Tables Supported)", "uri":"dli_08_0084.html", "doc_type":"sqlreference", - "p_code":"26", - "code":"31" + "p_code":"28", + "code":"33" }, { "desc":"This statement is used to update the partition information about a table in the Metastore.OrPARTITIONS: partition informationSERDEPROPERTIES: Serde attributeThis statemen", @@ -284,8 +302,8 @@ "title":"Updating Partitioned Table Data (Only OBS Tables Supported)", "uri":"dli_08_0079.html", "doc_type":"sqlreference", - "p_code":"26", - "code":"32" + "p_code":"28", + "code":"34" }, { "desc":"Spark caches Parquet metadata to improve performance. If you update a Parquet table, the cached metadata is not updated. Spark SQL cannot find the newly inserted data and", @@ -293,8 +311,8 @@ "title":"Updating Table Metadata with REFRESH TABLE", "uri":"dli_08_0359.html", "doc_type":"sqlreference", - "p_code":"26", - "code":"33" + "p_code":"28", + "code":"35" }, { "desc":"The LOAD DATA function can be used to import data in CSV, Parquet, ORC, JSON, and Avro formats. The data is converted into the Parquet data format for storage.INPATH: pat", @@ -303,7 +321,7 @@ "uri":"dli_08_0100.html", "doc_type":"sqlreference", "p_code":"1", - "code":"34" + "code":"36" }, { "desc":"This statement is used to insert the SELECT query result or a certain data record into a table.Insert the SELECT query result into a table.INSERT INTO [TABLE] [db_name.]t", @@ -312,7 +330,7 @@ "uri":"dli_08_0095.html", "doc_type":"sqlreference", "p_code":"1", - "code":"35" + "code":"37" }, { "desc":"This statement is used to delete data from the DLI or OBS table.Only data in the DLI or OBS table can be deleted.", @@ -321,7 +339,7 @@ "uri":"dli_08_0217.html", "doc_type":"sqlreference", "p_code":"1", - "code":"36" + "code":"38" }, { "desc":"This statement is used to directly write query results to a specified directory. The query results can be stored in CSV, Parquet, ORC, JSON, or Avro format.USING: Specifi", @@ -330,7 +348,7 @@ "uri":"dli_08_0205.html", "doc_type":"sqlreference", "p_code":"1", - "code":"37" + "code":"39" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -339,7 +357,7 @@ "uri":"dli_08_0349.html", "doc_type":"sqlreference", "p_code":"1", - "code":"38" + "code":"40" }, { "desc":"After multiversion is enabled, backup data is retained for seven days by default. You can change the retention period by setting system parameterdli.multi.version.retenti", @@ -347,8 +365,8 @@ "title":"Setting the Retention Period for Multiversion Backup Data", "uri":"dli_08_0350.html", "doc_type":"sqlreference", - "p_code":"38", - "code":"39" + "p_code":"40", + "code":"41" }, { "desc":"After the multiversion function is enabled, you can run the SHOW HISTORY command to view the backup data of a table. For details about the syntax for enabling or disablin", @@ -356,8 +374,8 @@ "title":"Viewing Multiversion Backup Data", "uri":"dli_08_0351.html", "doc_type":"sqlreference", - "p_code":"38", - "code":"40" + "p_code":"40", + "code":"42" }, { "desc":"After the multiversion function is enabled, you can run the RESTORE TABLE statement to restore a table or partition of a specified version. For details about the syntax f", @@ -365,8 +383,8 @@ "title":"Restoring Multiversion Backup Data", "uri":"dli_08_0352.html", "doc_type":"sqlreference", - "p_code":"38", - "code":"41" + "p_code":"40", + "code":"43" }, { "desc":"After the multiversion function is enabled, expired backup data will be directly deleted by the system when theinsert overwrite or truncate statement is executed. You can", @@ -374,8 +392,8 @@ "title":"Configuring the Trash Bin for Expired Multiversion Data", "uri":"dli_08_0353.html", "doc_type":"sqlreference", - "p_code":"38", - "code":"42" + "p_code":"40", + "code":"44" }, { "desc":"The retention period of multiversion backup data takes effect each time the insert overwrite or truncate statement is executed. If neither statement is executed for the t", @@ -383,8 +401,44 @@ "title":"Deleting Multiversion Backup Data", "uri":"dli_08_0355.html", "doc_type":"sqlreference", - "p_code":"38", - "code":"43" + "p_code":"40", + "code":"45" + }, + { + "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", + "product_code":"dli", + "title":"Table Lifecycle Management", + "uri":"en-us_topic_0000001571023676.html", + "doc_type":"sqlreference", + "p_code":"1", + "code":"46" + }, + { + "desc":"DLI provides table lifecycle management to allow you to specify the lifecycle of a table when creating the table. DLI determines whether to reclaim a table based on the t", + "product_code":"dli", + "title":"Specifying the Lifecycle of a Table When Creating the Table", + "uri":"en-us_topic_0000001621263317.html", + "doc_type":"sqlreference", + "p_code":"46", + "code":"47" + }, + { + "desc":"This section describes how to modify the lifecycle of an existing partitioned or non-partitioned table.When the lifecycle function is enabled for the first time, the syst", + "product_code":"dli", + "title":"Modifying the Lifecycle of a Table", + "uri":"en-us_topic_0000001621382957.html", + "doc_type":"sqlreference", + "p_code":"46", + "code":"48" + }, + { + "desc":"This section describes how to disable or restore the lifecycle of a specified table or partition.You can disable or restore the lifecycle of a table in either of the foll", + "product_code":"dli", + "title":"Disabling or Restoring the Lifecycle of a Table", + "uri":"en-us_topic_0000001621542965.html", + "doc_type":"sqlreference", + "p_code":"46", + "code":"49" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -393,16 +447,16 @@ "uri":"dli_08_0118.html", "doc_type":"sqlreference", "p_code":"1", - "code":"44" + "code":"50" }, { - "desc":"This statement is used to create a DLI table and associate it with an existing HBase table.Before creating a DLI table and associating it with HBase, you need to create a", + "desc":"This statement is used to create a DLI table and associate it with an existing HBase table.In Spark cross-source development scenarios, there is a risk of password leakag", "product_code":"dli", "title":"Creating a DLI Table and Associating It with HBase", "uri":"dli_08_0119.html", "doc_type":"sqlreference", - "p_code":"44", - "code":"45" + "p_code":"50", + "code":"51" }, { "desc":"This statement is used to insert data in a DLI table to the associated HBase table.Insert the SELECT query result into a table.INSERT INTO DLI_TABLE\n SELECT field1,field", @@ -410,8 +464,8 @@ "title":"Inserting Data to an HBase Table", "uri":"dli_08_0120.html", "doc_type":"sqlreference", - "p_code":"44", - "code":"46" + "p_code":"50", + "code":"52" }, { "desc":"This statement is used to query data in an HBase table.LIMIT is used to limit the query results. Only INT type is supported by the number parameter.The table to be querie", @@ -419,8 +473,8 @@ "title":"Querying an HBase Table", "uri":"dli_08_0121.html", "doc_type":"sqlreference", - "p_code":"44", - "code":"47" + "p_code":"50", + "code":"53" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -429,7 +483,7 @@ "uri":"dli_08_0220.html", "doc_type":"sqlreference", "p_code":"1", - "code":"48" + "code":"54" }, { "desc":"Run the CREATE TABLE statement to create the DLI table and associate it with the existing metric in OpenTSDB. This syntax supports the OpenTSDB of CloudTable and MRS.Befo", @@ -437,8 +491,8 @@ "title":"Creating a DLI Table and Associating It with OpenTSDB", "uri":"dli_08_0122.html", "doc_type":"sqlreference", - "p_code":"48", - "code":"49" + "p_code":"54", + "code":"55" }, { "desc":"Run the INSERT INTO statement to insert the data in the DLI table to the associated OpenTSDB metric.If no metric exists on the OpenTSDB, a new metric is automatically cre", @@ -446,8 +500,8 @@ "title":"Inserting Data to the OpenTSDB Table", "uri":"dli_08_0123.html", "doc_type":"sqlreference", - "p_code":"48", - "code":"50" + "p_code":"54", + "code":"56" }, { "desc":"This SELECT command is used to query data in an OpenTSDB table.If no metric exists in OpenTSDB, an error will be reported when the corresponding DLI table is queried.If t", @@ -455,8 +509,8 @@ "title":"Querying an OpenTSDB Table", "uri":"dli_08_0124.html", "doc_type":"sqlreference", - "p_code":"48", - "code":"51" + "p_code":"54", + "code":"57" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -465,16 +519,16 @@ "uri":"dli_08_0192.html", "doc_type":"sqlreference", "p_code":"1", - "code":"52" + "code":"58" }, { - "desc":"This statement is used to create a DLI table and associate it with an existing DWS table.Before creating a DLI table and associating it with DWS, you need to create a dat", + "desc":"This statement is used to create a DLI table and associate it with an existing DWS table.In Spark cross-source development scenarios, there is a risk of password leakage ", "product_code":"dli", "title":"Creating a DLI Table and Associating It with DWS", "uri":"dli_08_0193.html", "doc_type":"sqlreference", - "p_code":"52", - "code":"53" + "p_code":"58", + "code":"59" }, { "desc":"This statement is used to insert data in a DLI table to the associated DWS table.Insert the SELECT query result into a table.INSERT INTO DLI_TABLE\n SELECT field1,field2.", @@ -482,8 +536,8 @@ "title":"Inserting Data to the DWS Table", "uri":"dli_08_0194.html", "doc_type":"sqlreference", - "p_code":"52", - "code":"54" + "p_code":"58", + "code":"60" }, { "desc":"This statement is used to query data in a DWS table.LIMIT is used to limit the query results. Only INT type is supported by the number parameter.The table to be queried m", @@ -491,8 +545,8 @@ "title":"Querying the DWS Table", "uri":"dli_08_0195.html", "doc_type":"sqlreference", - "p_code":"52", - "code":"55" + "p_code":"58", + "code":"61" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -501,16 +555,16 @@ "uri":"dli_08_0196.html", "doc_type":"sqlreference", "p_code":"1", - "code":"56" + "code":"62" }, { - "desc":"This statement is used to create a DLI table and associate it with an existing RDS table. This function supports access to the MySQL and PostgreSQL clusters of RDS.Before", + "desc":"This statement is used to create a DLI table and associate it with an existing RDS table. This function supports access to the MySQL and PostgreSQL clusters of RDS.In Spa", "product_code":"dli", "title":"Creating a DLI Table and Associating It with RDS", "uri":"dli_08_0197.html", "doc_type":"sqlreference", - "p_code":"56", - "code":"57" + "p_code":"62", + "code":"63" }, { "desc":"This statement is used to insert data in a DLI table to the associated RDS table.Insert the SELECT query result into a table.INSERT INTO DLI_TABLE\n SELECT field1,field2.", @@ -518,8 +572,8 @@ "title":"Inserting Data to the RDS Table", "uri":"dli_08_0198.html", "doc_type":"sqlreference", - "p_code":"56", - "code":"58" + "p_code":"62", + "code":"64" }, { "desc":"This statement is used to query data in an RDS table.LIMIT is used to limit the query results. Only INT type is supported by the number parameter.The table to be queried ", @@ -527,8 +581,8 @@ "title":"Querying the RDS Table", "uri":"dli_08_0199.html", "doc_type":"sqlreference", - "p_code":"56", - "code":"59" + "p_code":"62", + "code":"65" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -537,16 +591,16 @@ "uri":"dli_08_0200.html", "doc_type":"sqlreference", "p_code":"1", - "code":"60" + "code":"66" }, { - "desc":"This statement is used to create a DLI table and associate it with an existing CSS table.Before creating a DLI table and associating it with CSS, you need to create a dat", + "desc":"This statement is used to create a DLI table and associate it with an existing CSS table.In Spark cross-source development scenarios, there is a risk of password leakage ", "product_code":"dli", "title":"Creating a DLI Table and Associating It with CSS", "uri":"dli_08_0201.html", "doc_type":"sqlreference", - "p_code":"60", - "code":"61" + "p_code":"66", + "code":"67" }, { "desc":"This statement is used to insert data in a DLI table to the associated CSS table.Insert the SELECT query result into a table.INSERT INTO DLI_TABLE\n SELECT field1,field2.", @@ -554,8 +608,8 @@ "title":"Inserting Data to the CSS Table", "uri":"dli_08_0202.html", "doc_type":"sqlreference", - "p_code":"60", - "code":"62" + "p_code":"66", + "code":"68" }, { "desc":"This statement is used to query data in a CSS table.LIMIT is used to limit the query results. Only INT type is supported by the number parameter.The table to be queried m", @@ -563,8 +617,8 @@ "title":"Querying the CSS Table", "uri":"dli_08_0203.html", "doc_type":"sqlreference", - "p_code":"60", - "code":"63" + "p_code":"66", + "code":"69" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -573,16 +627,16 @@ "uri":"dli_08_0225.html", "doc_type":"sqlreference", "p_code":"1", - "code":"64" + "code":"70" }, { - "desc":"This statement is used to create a DLI table and associate it with an existing DCS key.Before creating a DLI table and associating it with DCS, you need to create a datas", + "desc":"This statement is used to create a DLI table and associate it with an existing DCS key.In Spark cross-source development scenarios, there is a risk of password leakage if", "product_code":"dli", "title":"Creating a DLI Table and Associating It with DCS", "uri":"dli_08_0226.html", "doc_type":"sqlreference", - "p_code":"64", - "code":"65" + "p_code":"70", + "code":"71" }, { "desc":"This statement is used to insert data in a DLI table to the DCS key.Insert the SELECT query result into a table.INSERT INTO DLI_TABLE\n SELECT field1,field2...\n [FROM DL", @@ -590,8 +644,8 @@ "title":"Inserting Data to a DCS Table", "uri":"dli_08_0227.html", "doc_type":"sqlreference", - "p_code":"64", - "code":"66" + "p_code":"70", + "code":"72" }, { "desc":"This statement is used to query data in a DCS table.LIMIT is used to limit the query results. Only INT type is supported by the number parameter.Query data in the test_re", @@ -599,8 +653,8 @@ "title":"Querying the DCS Table", "uri":"dli_08_0228.html", "doc_type":"sqlreference", - "p_code":"64", - "code":"67" + "p_code":"70", + "code":"73" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -609,16 +663,16 @@ "uri":"dli_08_0229.html", "doc_type":"sqlreference", "p_code":"1", - "code":"68" + "code":"74" }, { - "desc":"This statement is used to create a DLI table and associate it with an existing DDS collection.Before creating a DLI table and associating it with DDS, you need to create ", + "desc":"This statement is used to create a DLI table and associate it with an existing DDS collection.In Spark cross-source development scenarios, there is a risk of password lea", "product_code":"dli", "title":"Creating a DLI Table and Associating It with DDS", "uri":"dli_08_0230.html", "doc_type":"sqlreference", - "p_code":"68", - "code":"69" + "p_code":"74", + "code":"75" }, { "desc":"This statement is used to insert data in a DLI table to the associated DDS table.Insert the SELECT query result into a table.INSERT INTO DLI_TABLE\n SELECT field1,field2.", @@ -626,8 +680,8 @@ "title":"Inserting Data to the DDS Table", "uri":"dli_08_0231.html", "doc_type":"sqlreference", - "p_code":"68", - "code":"70" + "p_code":"74", + "code":"76" }, { "desc":"This statement is used to query data in a DDS table.LIMIT is used to limit the query results. Only INT type is supported by the number parameter.If schema information is ", @@ -635,8 +689,44 @@ "title":"Querying the DDS Table", "uri":"dli_08_0232.html", "doc_type":"sqlreference", - "p_code":"68", - "code":"71" + "p_code":"74", + "code":"77" + }, + { + "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", + "product_code":"dli", + "title":"Creating a Datasource Connection with an Oracle Table", + "uri":"dli_08_0460.html", + "doc_type":"sqlreference", + "p_code":"1", + "code":"78" + }, + { + "desc":"This statement is used to create a DLI table and associate it with an existing Oracle table.Before creating a DLI table and associating it with Oracle, you need to create", + "product_code":"dli", + "title":"Creating a DLI Table and Associating It with Oracle", + "uri":"dli_08_0461.html", + "doc_type":"sqlreference", + "p_code":"78", + "code":"79" + }, + { + "desc":"This statement is used to insert data into an associated Oracle table.Insert the SELECT query result into a table.INSERT INTO DLI_TABLE\n SELECT field1,field2...\n [FROM ", + "product_code":"dli", + "title":"Inserting Data to an Oracle Table", + "uri":"dli_08_0462.html", + "doc_type":"sqlreference", + "p_code":"78", + "code":"80" + }, + { + "desc":"This statement is used to query data in an Oracle table.LIMIT is used to limit the query results. Only INT type is supported by the number parameter.If schema information", + "product_code":"dli", + "title":"Querying an Oracle Table", + "uri":"dli_08_0463.html", + "doc_type":"sqlreference", + "p_code":"78", + "code":"81" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -645,7 +735,7 @@ "uri":"dli_08_0129.html", "doc_type":"sqlreference", "p_code":"1", - "code":"72" + "code":"82" }, { "desc":"This statement is used to create views.CREATE VIEW: creates views based on the given select statement. The result of the select statement will not be written into the dis", @@ -653,8 +743,8 @@ "title":"Creating a View", "uri":"dli_08_0130.html", "doc_type":"sqlreference", - "p_code":"72", - "code":"73" + "p_code":"82", + "code":"83" }, { "desc":"This statement is used to delete views.DROP: Deletes the metadata of a specified view. Although views and tables have many common points, the DROP TABLE statement cannot ", @@ -662,8 +752,8 @@ "title":"Deleting a View", "uri":"dli_08_0131.html", "doc_type":"sqlreference", - "p_code":"72", - "code":"74" + "p_code":"82", + "code":"84" }, { "desc":"This statement returns the logical plan and physical execution plan for the SQL statement.EXTENDED: After this keyword is specified, the logical and physical plans are ou", @@ -672,7 +762,7 @@ "uri":"dli_08_0138.html", "doc_type":"sqlreference", "p_code":"1", - "code":"75" + "code":"85" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -681,7 +771,7 @@ "uri":"dli_08_0139.html", "doc_type":"sqlreference", "p_code":"1", - "code":"76" + "code":"86" }, { "desc":"Table 1 describes the SQL statement permission matrix in DLI in terms of permissions on databases, tables, and roles.For privilege granting or revocation on databases and", @@ -689,8 +779,8 @@ "title":"Data Permissions List", "uri":"dli_08_0140.html", "doc_type":"sqlreference", - "p_code":"76", - "code":"77" + "p_code":"86", + "code":"87" }, { "desc":"This statement is used to create a role in the current database or a specified database.Only users with the CREATE_ROLE permission on the database can create roles. For e", @@ -698,8 +788,8 @@ "title":"Creating a Role", "uri":"dli_08_0141.html", "doc_type":"sqlreference", - "p_code":"76", - "code":"78" + "p_code":"86", + "code":"88" }, { "desc":"This statement is used to delete a role in the current database or a specified database.NoneThe role_name to be deleted must exist in the current database or the specifie", @@ -707,8 +797,8 @@ "title":"Deleting a Role", "uri":"dli_08_0148.html", "doc_type":"sqlreference", - "p_code":"76", - "code":"79" + "p_code":"86", + "code":"89" }, { "desc":"This statement is used to bind a user with a role.NoneThe role_name and username must exist. Otherwise, an error will be reported.", @@ -716,8 +806,8 @@ "title":"Binding a Role", "uri":"dli_08_0142.html", "doc_type":"sqlreference", - "p_code":"76", - "code":"80" + "p_code":"86", + "code":"90" }, { "desc":"This statement is used to unbind the user with the role.Nonerole_name and user_name must exist and user_name has been bound to role_name.To unbind the user_name1 from rol", @@ -725,8 +815,8 @@ "title":"Unbinding a Role", "uri":"dli_08_0147.html", "doc_type":"sqlreference", - "p_code":"76", - "code":"81" + "p_code":"86", + "code":"91" }, { "desc":"This statement is used to display all roles or roles bound to the user_name in the current database.ALL: Displays all roles.Keywords ALL and user_name cannot coexist.To d", @@ -734,8 +824,8 @@ "title":"Displaying a Role", "uri":"dli_08_0143.html", "doc_type":"sqlreference", - "p_code":"76", - "code":"82" + "p_code":"86", + "code":"92" }, { "desc":"This statement is used to grant permissions to a user or role.ROLE: The subsequent role_name must be a role.USER: The subsequent user_name must be a user.The privilege mu", @@ -743,8 +833,8 @@ "title":"Granting a Permission", "uri":"dli_08_0144.html", "doc_type":"sqlreference", - "p_code":"76", - "code":"83" + "p_code":"86", + "code":"93" }, { "desc":"This statement is used to revoke permissions granted to a user or role.ROLE: The subsequent role_name must be a role.USER: The subsequent user_name must be a user.The pri", @@ -752,17 +842,17 @@ "title":"Revoking a Permission", "uri":"dli_08_0146.html", "doc_type":"sqlreference", - "p_code":"76", - "code":"84" + "p_code":"86", + "code":"94" }, { - "desc":"This statement is used to show the permissions granted to a user or role in the resource.ROLE: The subsequent role_name must be a role.USER: The subsequent user_name must", + "desc":"This statement is used to show the permissions granted to a user on a resource.USER: The subsequent user_name must be a user.The resource can be a queue, database, table,", "product_code":"dli", - "title":"Displaying the Granted Permissions", + "title":"Showing Granted Permissions", "uri":"dli_08_0145.html", "doc_type":"sqlreference", - "p_code":"76", - "code":"85" + "p_code":"86", + "code":"95" }, { "desc":"This statement is used to display the binding relationship between roles and a user in the current database.NoneThe ROLE variable must exist.", @@ -770,8 +860,8 @@ "title":"Displaying the Binding Relationship Between All Roles and Users", "uri":"dli_08_0149.html", "doc_type":"sqlreference", - "p_code":"76", - "code":"86" + "p_code":"86", + "code":"96" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -780,7 +870,7 @@ "uri":"dli_08_0056.html", "doc_type":"sqlreference", "p_code":"1", - "code":"87" + "code":"97" }, { "desc":"Data type is a basic attribute of data. It is used to distinguish different types of data. Different data types occupy different storage space and support different opera", @@ -788,8 +878,8 @@ "title":"Overview", "uri":"dli_08_0057.html", "doc_type":"sqlreference", - "p_code":"87", - "code":"88" + "p_code":"97", + "code":"98" }, { "desc":"Table 1 lists the primitive data types supported by DLI.VARCHAR and CHAR data is stored in STRING type on DLI. Therefore, the string that exceeds the specified length wil", @@ -797,8 +887,8 @@ "title":"Primitive Data Types", "uri":"dli_08_0058.html", "doc_type":"sqlreference", - "p_code":"87", - "code":"89" + "p_code":"97", + "code":"99" }, { "desc":"Spark SQL supports complex data types, as shown in Table 1.When a table containing fields of the complex data type is created, the storage format of this table cannot be ", @@ -806,8 +896,8 @@ "title":"Complex Data Types", "uri":"dli_08_0059.html", "doc_type":"sqlreference", - "p_code":"87", - "code":"90" + "p_code":"97", + "code":"100" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -816,16 +906,16 @@ "uri":"dli_08_0282.html", "doc_type":"sqlreference", "p_code":"1", - "code":"91" + "code":"101" }, { - "desc":"DLI allows you to create and use user-defined functions (UDF) and user-defined table functions (UDTF) in Spark jobs.If a function with the same name exists in the databas", + "desc":"DLI allows you to create and use user-defined functions (UDF) and user-defined table functions (UDTF) in Spark jobs.OrIf a function with the same name exists in the datab", "product_code":"dli", "title":"Creating a Function", "uri":"dli_08_0283.html", "doc_type":"sqlreference", - "p_code":"91", - "code":"92" + "p_code":"101", + "code":"102" }, { "desc":"This statement is used to delete functions.TEMPORARY: Indicates whether the function to be deleted is a temporary function.IF EXISTS: Used when the function to be deleted", @@ -833,8 +923,8 @@ "title":"Deleting a Function", "uri":"dli_08_0284.html", "doc_type":"sqlreference", - "p_code":"91", - "code":"93" + "p_code":"101", + "code":"103" }, { "desc":"Displays information about a specified function.EXTENDED: displays extended usage information.The metadata (implementation class and usage) of an existing function is ret", @@ -842,8 +932,8 @@ "title":"Displaying Function Details", "uri":"dli_08_0281.html", "doc_type":"sqlreference", - "p_code":"91", - "code":"94" + "p_code":"101", + "code":"104" }, { "desc":"View all functions in the current project.In the preceding statement, regex is a regular expression. For details about its parameters, see Table 1.For details about other", @@ -851,8 +941,8 @@ "title":"Displaying All Functions", "uri":"dli_08_0285.html", "doc_type":"sqlreference", - "p_code":"91", - "code":"95" + "p_code":"101", + "code":"105" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -861,52 +951,1411 @@ "uri":"dli_08_0064.html", "doc_type":"sqlreference", "p_code":"1", - "code":"96" + "code":"106" }, { - "desc":"Table 1 lists the mathematical functions supported in DLI.", - "product_code":"dli", - "title":"Mathematical Functions", - "uri":"dli_08_0065.html", - "doc_type":"sqlreference", - "p_code":"96", - "code":"97" - }, - { - "desc":"Table 1 lists the date functions supported in DLI.", + "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "product_code":"dli", "title":"Date Functions", + "uri":"dli_08_0471.html", + "doc_type":"sqlreference", + "p_code":"106", + "code":"107" + }, + { + "desc":"Table 1 lists the date functions supported by DLI.", + "product_code":"dli", + "title":"Overview", "uri":"dli_08_0066.html", "doc_type":"sqlreference", - "p_code":"96", - "code":"98" + "p_code":"107", + "code":"108" + }, + { + "desc":"This function is used to calculate the date after a date value is increased by a specified number of months. That is, it calculates the data that is num_months after star", + "product_code":"dli", + "title":"add_months", + "uri":"dli_spark_add_months.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"109" + }, + { + "desc":"This function is used to return the current date, in the yyyy-mm-dd format.Similar function: getdate. The getdate function is used to return the current system time, in t", + "product_code":"dli", + "title":"current_date", + "uri":"dli_spark_current_date.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"110" + }, + { + "desc":"This function is used to return the current timestamp.NoneThe return value is of the TIMESTAMP type.The value 1692002816300 is returned.", + "product_code":"dli", + "title":"current_timestamp", + "uri":"dli_spark_current_timestamp.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"111" + }, + { + "desc":"This function is used to calculate the number of days in which start_date is increased by days.To obtain the date with a specified change range based on the current date,", + "product_code":"dli", + "title":"date_add", + "uri":"dli_spark_date_add.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"112" + }, + { + "desc":"This function is used to change a date based on datepart and delta.To obtain the date with a specified change range based on the current date, use this function together ", + "product_code":"dli", + "title":"dateadd", + "uri":"dli_spark_dateadd.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"113" + }, + { + "desc":"This function is used to calculate the number of days in which start_date is subtracted by days.To obtain the date with a specified change range based on the current date", + "product_code":"dli", + "title":"date_sub", + "uri":"dli_spark_date_sub.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"114" + }, + { + "desc":"This function is used to convert a date into a string based on the format specified by format.The return value is of the STRING type.If the value of date is not of the DA", + "product_code":"dli", + "title":"date_format", + "uri":"dli_spark_date_format.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"115" + }, + { + "desc":"This function is used to calculate the difference between date1 and date2.Similar function: datediff1. The datediff1 function is used to calculate the difference between ", + "product_code":"dli", + "title":"datediff", + "uri":"dli_spark_datediff.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"116" + }, + { + "desc":"This function is used to calculate the difference between date1 and date2 and return the difference in a specified datepart.Similar function: datediff. The datediff funct", + "product_code":"dli", + "title":"datediff1", + "uri":"dli_spark_datediff1.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"117" + }, + { + "desc":"This function is used to calculate the value that meets the specified datepart in date.The return value is of the BIGINT type.If the value of date is not of the DATE or S", + "product_code":"dli", + "title":"datepart", + "uri":"dli_spark_datepart.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"118" + }, + { + "desc":"This function is used to calculate the date otained through the truncation of a specified date based on a specified datepart.It truncates the date before the specified da", + "product_code":"dli", + "title":"datetrunc", + "uri":"dli_spark_datetrunc.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"119" + }, + { + "desc":"This function is used to return the day of a specified date.The return value is of the INT type.If the value of date is not of the DATE or STRING type, the error message ", + "product_code":"dli", + "title":"day/dayofmonth", + "uri":"dli_spark_daydayofmonth.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"120" + }, + { + "desc":"This function is used to convert a timestamp represented by a numeric UNIX value to a date value.The return value is of the STRING type, in the yyyy-mm-dd hh:mi:ss format", + "product_code":"dli", + "title":"from_unixtime", + "uri":"dli_spark_from_unixtime.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"121" + }, + { + "desc":"This function is used to convert a UTC timestamp to a UNIX timestamp in a given time zone.The return value is of the TIMESTAMP type.If the value of timestamp is not of th", + "product_code":"dli", + "title":"from_utc_timestamp", + "uri":"dli_spark_from_utc_timestamp.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"122" + }, + { + "desc":"This function is used to return the current system time, in the yyyy-mm-dd hh:mi:ss format.Similar function: current_date. The current_date function is used to return the", + "product_code":"dli", + "title":"getdate", + "uri":"dli_spark_getdate.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"123" + }, + { + "desc":"This function is used to return the hour (from 0 to 23) of a specified time.The return value is of the INT type.If the value of date is not of the DATE or STRING type, th", + "product_code":"dli", + "title":"hour", + "uri":"dli_spark_hour.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"124" + }, + { + "desc":"This function is used to determine whether a date string can be converted into a date value based on a specified format.The return value is of the BOOLEAN type.If the val", + "product_code":"dli", + "title":"isdate", + "uri":"dli_spark_isdate.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"125" + }, + { + "desc":"This function is used to return the last day of the month a date belongs to.Similar function: lastday. The lastday function is used to return the last day of the month a ", + "product_code":"dli", + "title":"last_day", + "uri":"dli_spark_last_day.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"126" + }, + { + "desc":"This function is used to return the last day of the month a date belongs to. The hour, minute, and second part is 00:00:00.Similar function: last_day. The last_day functi", + "product_code":"dli", + "title":"lastday", + "uri":"dli_spark_lastday.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"127" + }, + { + "desc":"This function is used to return the minute (from 0 to 59) of a specified time.The return value is of the INT type.If the value of date is not of the DATE or STRING type, ", + "product_code":"dli", + "title":"minute", + "uri":"dli_spark_minute.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"128" + }, + { + "desc":"This function is used to return the month (from January to December) of a specified time.The return value is of the INT type.If the value of date is not of the DATE or ST", + "product_code":"dli", + "title":"month", + "uri":"dli_spark_month.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"129" + }, + { + "desc":"This function returns the month difference between date1 and date2.The return value is of the DOUBLE type.If the values of date1 and date2 are not of the DATE or STRING t", + "product_code":"dli", + "title":"months_between", + "uri":"dli_spark_months_between.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"130" + }, + { + "desc":"This function is used to return the date closest to day_of_week after start_date.The return value is of the DATE type, in the yyyy-mm-dd format.If the value of start_date", + "product_code":"dli", + "title":"next_day", + "uri":"dli_spark_next_day.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"131" + }, + { + "desc":"This function is used to return the quarter of a date. The value ranges from 1 to 4.The return value is of the INT type.If the value of date is not of the DATE or STRING ", + "product_code":"dli", + "title":"quarter", + "uri":"dli_spark_quarter.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"132" + }, + { + "desc":"This function is used to return the second (from 0 to 59) of a specified time.The return value is of the INT type.If the value of date is not of the DATE or STRING type, ", + "product_code":"dli", + "title":"second", + "uri":"dli_spark_second.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"133" + }, + { + "desc":"This function is used to convert a date into a string in a specified format.The return value is of the STRING type.If the value of date is not of the DATE or STRING type,", + "product_code":"dli", + "title":"to_char", + "uri":"dli_spark_to_char.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"134" + }, + { + "desc":"This function is used to return the year, month, and day in a time.Similar function: to_date1. The to_date1 function is used to convert a string in a specified format to ", + "product_code":"dli", + "title":"to_date", + "uri":"dli_spark_to_date.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"135" + }, + { + "desc":"This function is used to convert a string in a specified format to a date value.Similar function: to_date. The to_date function is used to return the year, month, and day", + "product_code":"dli", + "title":"to_date1", + "uri":"dli_spark_to_date1.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"136" + }, + { + "desc":"This function is used to convert a timestamp in a given time zone to a UTC timestamp.The return value is of the BIGINT type.If the value of timestamp is not of the DATE o", + "product_code":"dli", + "title":"to_utc_timestamp", + "uri":"dli_spark_to_utc_timestamp.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"137" + }, + { + "desc":"This function is used to reset a date to a specific format.Resetting means returning to default values, where the default values for year, month, and day are 01, and the ", + "product_code":"dli", + "title":"trunc", + "uri":"dli_spark_trunc.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"138" + }, + { + "desc":"This function is used to convert a date value to a numeric date value in UNIX format.The function returns the first ten digits of the timestamp in normal UNIX format.The ", + "product_code":"dli", + "title":"unix_timestamp", + "uri":"dli_spark_unix_timestamp.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"139" + }, + { + "desc":"This function is used to return the day of the current week.The return value is of the INT type.If Monday is used as the first day of a week, the value 0 is returned. For", + "product_code":"dli", + "title":"weekday", + "uri":"dli_spark_weekday.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"140" + }, + { + "desc":"This function is used to return the week number (from 0 to 53) of a specified date.The return value is of the INT type.If the value of date is not of the DATE or STRING t", + "product_code":"dli", + "title":"weekofyear", + "uri":"dli_spark_weekofyear.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"141" + }, + { + "desc":"This function is used to return the year of a specified date.The return value is of the INT type.If the value of date is not of the DATE or STRING type, the error message", + "product_code":"dli", + "title":"year", + "uri":"dli_spark_year.html", + "doc_type":"sqlreference", + "p_code":"107", + "code":"142" + }, + { + "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", + "product_code":"dli", + "title":"String Functions", + "uri":"dli_08_0472.html", + "doc_type":"sqlreference", + "p_code":"106", + "code":"143" }, { "desc":"Table 1 lists the string functions supported by DLI.", "product_code":"dli", - "title":"String Functions", + "title":"Overview", "uri":"dli_08_0067.html", "doc_type":"sqlreference", - "p_code":"96", - "code":"99" + "p_code":"143", + "code":"144" }, { - "desc":"An aggregate function performs a calculation operation on a set of input values and returns a value. For example, the COUNT function counts the number of rows retrieved b", + "desc":"This function is used to return the ASCII code of the first character in str.The return value is of the BIGINT type.If the value of str is not of the STRING, BIGINT, DOUB", + "product_code":"dli", + "title":"ascii", + "uri":"dli_spark_ascii.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"145" + }, + { + "desc":"This function is used to concatenate arrays or strings.If multiple arrays are used as the input, all elements in the arrays are connected to generate a new array.If multi", + "product_code":"dli", + "title":"concat", + "uri":"dli_spark_concat.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"146" + }, + { + "desc":"This function is used to return a string concatenated from multiple input strings that are separated by specified separators.orReturns the result of joining all the strin", + "product_code":"dli", + "title":"concat_ws", + "uri":"dli_spark_concat_ws.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"147" + }, + { + "desc":"This parameter is used to return the number of characters in str1 that appear in str2.The return value is of the BIGINT type.If the value of str1 or str2 is NULL, NULL is", + "product_code":"dli", + "title":"char_matchcount", + "uri":"dli_spark_char_matchcount.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"148" + }, + { + "desc":"This function is used to encode str in charset format.encode(string , string )The return value is of the BINARY type.If the value of str or charset is NULL,", + "product_code":"dli", + "title":"encode", + "uri":"dli_spark_encode.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"149" + }, + { + "desc":"This function is used to return the position (stating from 1) of str1 in str2 separated by commas (,).The return value is of the BIGINT type.If str1 cannot be matched in ", + "product_code":"dli", + "title":"find_in_set", + "uri":"dli_spark_find_in_set.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"150" + }, + { + "desc":"This function is used to parse the JSON object in a specified JSON path. The function will return NULL if the JSON object is invalid.The return value is of the STRING typ", + "product_code":"dli", + "title":"get_json_object", + "uri":"dli_spark_get_json_object.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"151" + }, + { + "desc":"This function is used to return the index of substr that appears earliest in str.It returns NULL if either of the arguments are NULL and returns 0 if substr does not exis", + "product_code":"dli", + "title":"instr", + "uri":"dli_spark_instr.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"152" + }, + { + "desc":"This function is used to return the position of substring str2 in string str1.Similar function: instr. The instr function is used to return the index of substr that appea", + "product_code":"dli", + "title":"instr1", + "uri":"dli_spark_instr1.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"153" + }, + { + "desc":"This function is used to convert the first letter of each word of a string to upper case and all other letters to lower case.The return value is of the STRING type. In th", + "product_code":"dli", + "title":"initcap", + "uri":"dli_spark_initcap.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"154" + }, + { + "desc":"This function is used to split str by split1, convert each group into a key-value pair by split2, and return the value corresponding to the key.The return value is of the", + "product_code":"dli", + "title":"keyvalue", + "uri":"dli_spark_keyvalue.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"155" + }, + { + "desc":"This function is used to return the length of a string.Similar function: lengthb. The lengthb function is used to return the length of string str in bytes and return a va", + "product_code":"dli", + "title":"length", + "uri":"dli_spark_length.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"156" + }, + { + "desc":"This function is used to return the length of a specified string in bytes.Similar function: length. The length function is used to return the length of a string and retur", + "product_code":"dli", + "title":"lengthb", + "uri":"dli_spark_lengthb.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"157" + }, + { + "desc":"This function is used to returns the Levenshtein distance between two strings, for example, levenshtein('kitten','sitting') = 3.Levenshtein distance is a type of edit dis", + "product_code":"dli", + "title":"levenshtein", + "uri":"dli_spark_levenshtein.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"158" + }, + { + "desc":"This function is used to return the position of substr in str. You can specify the starting position of your search using \"start_pos,\" which starts from 1.The return valu", + "product_code":"dli", + "title":"locate", + "uri":"dli_spark_locate.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"159" + }, + { + "desc":"This function is used to convert all characters of a string to the lower case.The return value is of the STRING type.If the value of the input parameter is not of the STR", + "product_code":"dli", + "title":"lower/lcase", + "uri":"dli_spark_lower_lcase.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"160" + }, + { + "desc":"This function is used to return a string of a specified length. If the length of the given string (str1) is shorter than the specified length (length), the given string i", + "product_code":"dli", + "title":"lpad", + "uri":"dli_spark_lpad.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"161" + }, + { + "desc":"This function is used to remove characters from the left of str.If trimChars is not specified, spaces are removed by default.If trimChars is specified, the function remov", + "product_code":"dli", + "title":"ltrim", + "uri":"dli_spark_ltrim.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"162" + }, + { + "desc":"This character is used to return the specified part of a given URL. Valid values of partToExtract include HOST, PATH, QUERY, REF, PROTOCOL, AUTHORITY, FILE, and USERINFO.", + "product_code":"dli", + "title":"parse_url", + "uri":"dli_spark_parse_url.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"163" + }, + { + "desc":"This function is used to print the input in a specific format.The return value is of the STRING type.The value is returned after the parameters that filled in Obj are spe", + "product_code":"dli", + "title":"printf", + "uri":"dli_spark_printf.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"164" + }, + { + "desc":"This function is used to return the number of substrings that match a specified pattern in the source, starting from the start_position position.The return value is of th", + "product_code":"dli", + "title":"regexp_count", + "uri":"dli_spark_regexp_count.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"165" + }, + { + "desc":"This function is used to match the string source based on the pattern grouping rule and return the string content that matches groupid.regexp_extract(string , str", + "product_code":"dli", + "title":"regexp_extract", + "uri":"dli_spark_regexp_extract.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"166" + }, + { + "desc":"This function is used to replace the part in a specified string that is the same as the string old with the string new and return the result.If the string has no same cha", + "product_code":"dli", + "title":"replace", + "uri":"dli_spark_replace.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"167" + }, + { + "desc":"This function has slight variations in its functionality depending on the version of Spark being used.For Spark 2.4.5 or earlier: Replaces the substring that matches patt", + "product_code":"dli", + "title":"regexp_replace", + "uri":"dli_spark_regexp_replace.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"168" + }, + { + "desc":"This function is used to replace the substring that matches pattern for the occurrence time in the source string with the specified string replace_string and return the r", + "product_code":"dli", + "title":"regexp_replace1", + "uri":"dli_spark_regexp_replace1.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"169" + }, + { + "desc":"This function is used to return the start or end position of the substring that matches a specified pattern for the occurrence time, starting from start_position in the s", + "product_code":"dli", + "title":"regexp_instr", + "uri":"dli_spark_regexp_instr.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"170" + }, + { + "desc":"This function is used to return the substring that matches a specified pattern for the occurrence time, starting from start_position in the string source.The return value", + "product_code":"dli", + "title":"regexp_substr", + "uri":"dli_spark_regexp_substr.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"171" + }, + { + "desc":"This function is used to return the string after str is repeated for n times.The return value is of the STRING type.If the value of str is not of the STRING, BIGINT, DOUB", + "product_code":"dli", + "title":"repeat", + "uri":"dli_spark_repeat.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"172" + }, + { + "desc":"This function is used to return a string in reverse order.The return value is of the STRING type.If the value of str is not of the STRING, BIGINT, DOUBLE, DECIMAL, or DAT", + "product_code":"dli", + "title":"reverse", + "uri":"dli_spark_reverse.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"173" + }, + { + "desc":"This function is used to right pad str1 with str2 to the specified length.The return value is of the STRING type.If the value of length is smaller than the number of digi", + "product_code":"dli", + "title":"rpad", + "uri":"dli_spark_rpad.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"174" + }, + { + "desc":"This function is used to remove characters from the right of str.If trimChars is not specified, spaces are removed by default.If trimChars is specified, the function remo", + "product_code":"dli", + "title":"rtrim", + "uri":"dli_spark_rtrim.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"175" + }, + { + "desc":"This function is used to return the soundex string from str, for example, soundex('Miller') = M460.The return value is of the STRING type.If the value of str is NULL, NUL", + "product_code":"dli", + "title":"soundex", + "uri":"dli_spark_soundex.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"176" + }, + { + "desc":"This function is used to return a specified number of spaces.The return value is of the STRING type.If the value of n is empty, an error is reported.If the value of n is ", + "product_code":"dli", + "title":"space", + "uri":"dli_spark_space.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"177" + }, + { + "desc":"This function is used to return the substring of str, starting from start_position and with a length of length.orThe return value is of the STRING type.If the value of st", + "product_code":"dli", + "title":"substr/substring", + "uri":"dli_spark_substr_substring.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"178" + }, + { + "desc":"This function is used to truncate the string before the count separator of str. If the value of count is positive, the string is truncated from the left. If the value of ", + "product_code":"dli", + "title":"substring_index", + "uri":"dli_spark_substring_index.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"179" + }, + { + "desc":"This function is used to split a specified string based on a specified separator and return a substring from the start to end position.The return value is of the STRING t", + "product_code":"dli", + "title":"split_part", + "uri":"dli_spark_split_part.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"180" + }, + { + "desc":"This function is used to translate the input string by replacing the characters or string specified by from with the characters or string specified by to.For example, it ", + "product_code":"dli", + "title":"translate", + "uri":"dli_spark_translate.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"181" + }, + { + "desc":"This function is used to remove characters from the left and right of str.If trimChars is not specified, spaces are removed by default.If trimChars is specified, the func", + "product_code":"dli", + "title":"trim", + "uri":"dli_spark_trim.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"182" + }, + { + "desc":"This function is used to convert all characters of a string to the upper case.orThe return value is of the STRING type.If the value of the input parameter is not of the S", + "product_code":"dli", + "title":"upper/ucase", + "uri":"dli_spark_upper_ucase.html", + "doc_type":"sqlreference", + "p_code":"143", + "code":"183" + }, + { + "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", + "product_code":"dli", + "title":"Mathematical Functions", + "uri":"dli_08_0473.html", + "doc_type":"sqlreference", + "p_code":"106", + "code":"184" + }, + { + "desc":"Table 1 lists the mathematical functions supported by DLI.", + "product_code":"dli", + "title":"Overview", + "uri":"dli_08_0065.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"185" + }, + { + "desc":"This function is used to calculate the absolute value of an input parameter.The return value is of the DOUBLE or INT type.If the value of a is NULL, NULL is returned.The ", + "product_code":"dli", + "title":"abs", + "uri":"dli_spark_abs.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"186" + }, + { + "desc":"This function is used to return the arc cosine value of a given angle a.The return value is of the DOUBLE type. The value ranges from 0 to π.If the value of a is not with", + "product_code":"dli", + "title":"acos", + "uri":"dli_spark_aocs.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"187" + }, + { + "desc":"This function is used to return the arc sine value of a given angle a.The return value is of the DOUBLE type. The value ranges from -π/2 to π/2.If the value of a is not w", + "product_code":"dli", + "title":"asin", + "uri":"dli_spark_asin.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"188" + }, + { + "desc":"This function is used to return the arc tangent value of a given angle a.The return value is of the DOUBLE type. The value ranges from -π/2 to π/2.If the value of a is no", + "product_code":"dli", + "title":"atan", + "uri":"dli_spark_atan.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"189" + }, + { + "desc":"This function is used to return the binary format of a.The return value is of the STRING type.If the value of a is NULL, NULL is returned.The value 1 is returned.The valu", + "product_code":"dli", + "title":"bin", + "uri":"dli_spark_bin.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"190" + }, + { + "desc":"This function is used to return a value that is rounded off to d decimal places.The return value is of the DOUBLE type.If the value of a or d is NULL, NULL is returned.Th", + "product_code":"dli", + "title":"bround", + "uri":"dli_spark_bround.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"191" + }, + { + "desc":"This function is used to return the cube root of a.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The value 3 is returned.select cbrt(", + "product_code":"dli", + "title":"cbrt", + "uri":"dli_spark_cbrt.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"192" + }, + { + "desc":"This function is used to round up a to the nearest integer.The return value is of the DECIMAL type.If the value of a is NULL, NULL is returned.The value 2 is returned.The", + "product_code":"dli", + "title":"ceil", + "uri":"dli_spark_ceil.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"193" + }, + { + "desc":"This function is used to convert a number from from_base to to_base.The return value is of the STRING type.If the value of num, from_base, or to_base is NULL, NULL is ret", + "product_code":"dli", + "title":"conv", + "uri":"dli_spark_conv.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"194" + }, + { + "desc":"This function is used to calculate the cosine value of a, with input in radians.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The val", + "product_code":"dli", + "title":"cos", + "uri":"dli_spark_cos.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"195" + }, + { + "desc":"This function is used to calculate the cotangent value of a, with input in radians.The return value is of the DOUBLE or DECIMAL type.If the value of a is NULL, NULL is re", + "product_code":"dli", + "title":"cot1", + "uri":"dli_spark_cot1.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"196" + }, + { + "desc":"This function is used to calculate the angle corresponding to the returned radian.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The v", + "product_code":"dli", + "title":"degrees", + "uri":"dli_spark_degress.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"197" + }, + { + "desc":"This function is used to return the value of e.The return value is of the DOUBLE type.The value 2.718281828459045 is returned.select e();", + "product_code":"dli", + "title":"e", + "uri":"dli_spark_e.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"198" + }, + { + "desc":"This function is used to return the value of e raised to the power of a.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The value 7.389", + "product_code":"dli", + "title":"exp", + "uri":"dli_spark_exp.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"199" + }, + { + "desc":"This function is used to return the factorial of a.The return value is of the BIGINT type.If the value of a is 0, 1 is returned.If the value of a is NULL or outside the r", + "product_code":"dli", + "title":"factorial", + "uri":"dli_spark_factorial.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"200" + }, + { + "desc":"This function is used to round down a to the nearest integer.The return value is of the BIGINT type.If the value of a is NULL, NULL is returned.The value 1 is returned.Th", + "product_code":"dli", + "title":"floor", + "uri":"dli_spark_floor.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"201" + }, + { + "desc":"This function is used to return the greatest value in a list of values.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The value 4.0 is", + "product_code":"dli", + "title":"greatest", + "uri":"dli_spark_greatest.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"202" + }, + { + "desc":"This function is used to convert an integer or character into its hexadecimal representation.The return value is of the STRING type.If the value of a is 0, 0 is returned.", + "product_code":"dli", + "title":"hex", + "uri":"dli_spark_hex.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"203" + }, + { + "desc":"This function is used to return the smallest value in a list of values.The return value is of the DOUBLE type.If the value of v1 or v2 is of the STRING type, an error is ", + "product_code":"dli", + "title":"least", + "uri":"dli_spark_least.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"204" + }, + { + "desc":"This function is used to return the natural logarithm of a given value.The return value is of the DOUBLE type.If the value of a is negative or 0, NULL is returned.If the ", + "product_code":"dli", + "title":"ln", + "uri":"dli_spark_ln.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"205" + }, + { + "desc":"This function is used to return the natural logarithm of a given base and exponent.The return value is of the DOUBLE type.If the value of base or a is NULL, NULL is retur", + "product_code":"dli", + "title":"log", + "uri":"dli_spark_log.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"206" + }, + { + "desc":"This function is used to return the natural logarithm of a given value with a base of 10.The return value is of the DOUBLE type.If the value of a is negative, 0, or NULL,", + "product_code":"dli", + "title":"log10", + "uri":"dli_spark_log10.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"207" + }, + { + "desc":"This function is used to return the natural logarithm of a given value with a base of 2.The return value is of the DOUBLE type.If the value of a is negative, 0, or NULL, ", + "product_code":"dli", + "title":"log2", + "uri":"dli_spark_log2.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"208" + }, + { + "desc":"This function is used to calculate the median of input parameters.The return value is of the DOUBLE or DECIMAL type.If the column name does not exist, an error is reporte", + "product_code":"dli", + "title":"median", + "uri":"dli_spark_median.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"209" + }, + { + "desc":"This function is used to return the additive inverse of a.The return value is of the DECIMAL or INT type.If the value of a is NULL, NULL is returned.The value -1 is retur", + "product_code":"dli", + "title":"negative", + "uri":"dli_spark_negative.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"210" + }, + { + "desc":"This function is used to return the exact percentile, which is applicable to a small amount of data. It sorts a specified column in ascending order, and then obtains the ", + "product_code":"dli", + "title":"percentlie", + "uri":"dli_spark_percentlie.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"211" + }, + { + "desc":"This function is used to return the approximate percentile, which is applicable to a large amount of data. It sorts a specified column in ascending order, and then obtain", + "product_code":"dli", + "title":"percentlie_approx", + "uri":"dli_spark_percentlie_approx.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"212" + }, + { + "desc":"This function is used to return the value of π.The return value is of the DOUBLE type.The value 3.141592653589793 is returned.", + "product_code":"dli", + "title":"pi", + "uri":"dli_spark_pi.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"213" + }, + { + "desc":"This function is used to return the positive value of the remainder after division of x by y.pmod(INT a, INT b)The return value is of the DECIMAL or INT type.If the value", + "product_code":"dli", + "title":"pmod", + "uri":"dli_spark_pmod.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"214" + }, + { + "desc":"This function is used to return the value of a.The return value is of the DECIMAL, DOUBLE, or INT type.If the value of a is NULL, NULL is returned.The value 3 is returned", + "product_code":"dli", + "title":"positive", + "uri":"dli_spark_positive.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"215" + }, + { + "desc":"This function is used to calculate and return the pth power of a.The return value is of the DOUBLE type.If the value of a or p is NULL, NULL is returned.The value 16 retu", + "product_code":"dli", + "title":"pow", + "uri":"dli_spark_pow.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"216" + }, + { + "desc":"This function is used to return the radian corresponding to an angle.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The value 1.047197", + "product_code":"dli", + "title":"radians", + "uri":"dli_spark_radians.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"217" + }, + { + "desc":"This function is used to return an evenly distributed random number that is greater than or equal to 0 and less than 1.The return value is of the DOUBLE type.The value 0.", + "product_code":"dli", + "title":"rand", + "uri":"dli_spark_rand.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"218" + }, + { + "desc":"This function is used to calculate the rounded value of a up to d decimal places.The return value is of the DOUBLE type.If the value of d is negative, an error is reporte", + "product_code":"dli", + "title":"round", + "uri":"dli_spark_round.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"219" + }, + { + "desc":"This function is used to perform a signed bitwise left shift. It takes the binary number a and shifts it b positions to the left.shiftleft(BIGINT a, BIGINT b)The return v", + "product_code":"dli", + "title":"shiftleft", + "uri":"dli_spark_shiftleft.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"220" + }, + { + "desc":"This function is used to perform a signed bitwise right shift. It takes the binary number a and shifts it b positions to the right.The return value is of the INT type.If ", + "product_code":"dli", + "title":"shiftright", + "uri":"dli_spark_shiftright.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"221" + }, + { + "desc":"This function is used to perform an unsigned bitwise right shift. It takes the binary number a and shifts it b positions to the right.The return value is of the INT type.", + "product_code":"dli", + "title":"shiftrightunsigned", + "uri":"dli_spark_shiftrightunsigned.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"222" + }, + { + "desc":"This function is used to return the positive and negative signs corresponding to a.The return value is of the DOUBLE type.If the value of a is a positive number, 1 is ret", + "product_code":"dli", + "title":"sign", + "uri":"dli_spark_sign.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"223" + }, + { + "desc":"This function is used to return the sine value of a, with input in radians.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The value 1 ", + "product_code":"dli", + "title":"sin", + "uri":"dli_spark_sin.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"224" + }, + { + "desc":"This function is used to return the square root of a value.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The value 2.8284271247461903", + "product_code":"dli", + "title":"sqrt", + "uri":"dli_spark_sqrt.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"225" + }, + { + "desc":"This function is used to return the tangent value of a, with input in radians.The return value is of the DOUBLE type.If the value of a is NULL, NULL is returned.The value", + "product_code":"dli", + "title":"tan", + "uri":"dli_spark_tan.html", + "doc_type":"sqlreference", + "p_code":"184", + "code":"226" + }, + { + "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "product_code":"dli", "title":"Aggregate Functions", - "uri":"dli_08_0068.html", + "uri":"dli_08_0474.html", "doc_type":"sqlreference", - "p_code":"96", - "code":"100" + "p_code":"106", + "code":"227" }, { - "desc":"A window function performs a calculation operation on a set of values related to the current value. A window function can be an aggregate function used in the GROUP BY cl", + "desc":"Table 1 lists the aggregate functions supported by DLI.", + "product_code":"dli", + "title":"Overview", + "uri":"dli_08_0068.html", + "doc_type":"sqlreference", + "p_code":"227", + "code":"228" + }, + { + "desc":"This function is used to return the average value.The return value is of the DOUBLE type.If the value of col is NULL, the column is not involved in calculation.Calculates", + "product_code":"dli", + "title":"avg", + "uri":"dli_spark_avg.html", + "doc_type":"sqlreference", + "p_code":"227", + "code":"229" + }, + { + "desc":"This function is used to return the correlation coefficient between two columns of numerical values.The return value is of the DOUBLE type.Calculates the correlation coef", + "product_code":"dli", + "title":"corr", + "uri":"dli_spark_corr.html", + "doc_type":"sqlreference", + "p_code":"227", + "code":"230" + }, + { + "desc":"This function is used to return the number of records.The return value is of the BIGINT type.If the value of colname is NULL, the row is not involved in calculation.Calcu", + "product_code":"dli", + "title":"count", + "uri":"dli_spark_count.html", + "doc_type":"sqlreference", + "p_code":"227", + "code":"231" + }, + { + "desc":"This function is used to return the covariance between two columns of numerical values.The return value is of the DOUBLE type.Calculates the covariance between the invent", + "product_code":"dli", + "title":"covar_pop", + "uri":"dli_spark_covar_pop.html", + "doc_type":"sqlreference", + "p_code":"227", + "code":"232" + }, + { + "desc":"This function is used to return the sample covariance between two columns of numerical values.The return value is of the DOUBLE type.Calculates the sample covariance betw", + "product_code":"dli", + "title":"covar_samp", + "uri":"dli_spark_covar_samp.html", + "doc_type":"sqlreference", + "p_code":"227", + "code":"233" + }, + { + "desc":"This function is used to return the maximum value.The return value is of the DOUBLE type.The return type is the same as the type of col. The return rules are as follows:I", + "product_code":"dli", + "title":"max", + "uri":"dli_spark_max.html", + "doc_type":"sqlreference", + "p_code":"227", + "code":"234" + }, + { + "desc":"This function is used to return the minimum value.The return value is of the DOUBLE type.The return type is the same as the type of col. The return rules are as follows:I", + "product_code":"dli", + "title":"min", + "uri":"dli_spark_min.html", + "doc_type":"sqlreference", + "p_code":"227", + "code":"235" + }, + { + "desc":"This function is used to return the numerical value at a certain percentage point within a range of values.The return value is of the DOUBLE type.The value should be betw", + "product_code":"dli", + "title":"percentile", + "uri":"dli_spark_percentile.html", + "doc_type":"sqlreference", + "p_code":"227", + "code":"236" + }, + { + "desc":"This function is used to approximate the pth percentile (including floating-point numbers) of a numeric column within a group.The return value is of the DOUBLE type.Calcu", + "product_code":"dli", + "title":"percentile_approx", + "uri":"dli_spark_percentile_approx.html", + "doc_type":"sqlreference", + "p_code":"227", + "code":"237" + }, + { + "desc":"This function is used to return the deviation of a specified column.The return value is of the DOUBLE type.Calculates the deviation of all offering inventories (items). A", + "product_code":"dli", + "title":"stddev_pop", + "uri":"dli_spark_stddev_pop.html", + "doc_type":"sqlreference", + "p_code":"227", + "code":"238" + }, + { + "desc":"This function is used to return the sample deviation of a specified column.The return value is of the DOUBLE type.Calculates the sample covariance between the inventory (", + "product_code":"dli", + "title":"stddev_samp", + "uri":"dli_spark_stddev_samp.html", + "doc_type":"sqlreference", + "p_code":"227", + "code":"239" + }, + { + "desc":"This function is used to calculate the total sum.The return value is of the DOUBLE type.If the value of col is NULL, the row is not involved in calculation.Calculates the", + "product_code":"dli", + "title":"sum", + "uri":"dli_spark_sum.html", + "doc_type":"sqlreference", + "p_code":"227", + "code":"240" + }, + { + "desc":"This function is used to return the variance of a column.The return value is of the DOUBLE type.Calculates the variance of all offering inventories (items). An example co", + "product_code":"dli", + "title":"variance/var_pop", + "uri":"dli_spark_variance_var_pop.html", + "doc_type":"sqlreference", + "p_code":"227", + "code":"241" + }, + { + "desc":"This function is used to return the sample variance of a specified column.The return value is of the DOUBLE type.Calculates the sample variance of all offering inventorie", + "product_code":"dli", + "title":"var_samp", + "uri":"dli_spark_war_samp.html", + "doc_type":"sqlreference", + "p_code":"227", + "code":"242" + }, + { + "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "product_code":"dli", "title":"Window Functions", + "uri":"dli_08_0475.html", + "doc_type":"sqlreference", + "p_code":"106", + "code":"243" + }, + { + "desc":"Table 1 lists the window functions supported by DLI.", + "product_code":"dli", + "title":"Overview", "uri":"dli_08_0069.html", "doc_type":"sqlreference", - "p_code":"96", - "code":"101" + "p_code":"243", + "code":"244" + }, + { + "desc":"This function is used to return the cumulative distribution, which is equivalent to calculating the proportion of data in the partition that is greater than or equal to, ", + "product_code":"dli", + "title":"cume_dist", + "uri":"dli_spark_cume_dist.html", + "doc_type":"sqlreference", + "p_code":"243", + "code":"245" + }, + { + "desc":"This function is used to obtain the value of the first data record in the window corresponding to the current row.The restrictions on using window functions are as follow", + "product_code":"dli", + "title":"first_value", + "uri":"dli_spark_first_value.html", + "doc_type":"sqlreference", + "p_code":"243", + "code":"246" + }, + { + "desc":"This function is used to obtain the value of the last data record in the window corresponding to the current row.The restrictions on using window functions are as follows", + "product_code":"dli", + "title":"last_value", + "uri":"dli_spark_last_value.html", + "doc_type":"sqlreference", + "p_code":"243", + "code":"247" + }, + { + "desc":"This function is used to return the value of the nth row upwards within a specified window.The restrictions on using window functions are as follows:Window functions can ", + "product_code":"dli", + "title":"lag", + "uri":"dli_spark_lag.html", + "doc_type":"sqlreference", + "p_code":"243", + "code":"248" + }, + { + "desc":"This function is used to return the value of the nth row downwards within a specified window.The restrictions on using window functions are as follows:Window functions ca", + "product_code":"dli", + "title":"lead", + "uri":"dli_spark_lead.html", + "doc_type":"sqlreference", + "p_code":"243", + "code":"249" + }, + { + "desc":"This function is used to return the value of the column specified in the ORDER BY clause of a window, expressed as a decimal between 0 and 1. It is calculated as (the ran", + "product_code":"dli", + "title":"percent_rank", + "uri":"dli_spark_percent_rank.html", + "doc_type":"sqlreference", + "p_code":"243", + "code":"250" + }, + { + "desc":"This function is used to return the rank of a value in a set of values. When multiple values share the same rank, the next rank in the sequence is not consecutive.The res", + "product_code":"dli", + "title":"rank", + "uri":"dli_spark_rank.html", + "doc_type":"sqlreference", + "p_code":"243", + "code":"251" + }, + { + "desc":"This function is used to return the row number, starting from 1 and increasing incrementally.The restrictions on using window functions are as follows:Window functions ca", + "product_code":"dli", + "title":"row_number", + "uri":"dli_spark_row_number.html", + "doc_type":"sqlreference", + "p_code":"243", + "code":"252" + }, + { + "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", + "product_code":"dli", + "title":"Other Functions", + "uri":"dli_08_0476.html", + "doc_type":"sqlreference", + "p_code":"106", + "code":"253" + }, + { + "desc":"The following table lists the functions provided by DLI, such as decode1, javahash, and max_pt.", + "product_code":"dli", + "title":"Overview", + "uri":"dli_08_0469.html", + "doc_type":"sqlreference", + "p_code":"253", + "code":"254" + }, + { + "desc":"This function is used to implement if-then-else branch selection.result and default are return values. These values can be of any data type.If they match, the value of re", + "product_code":"dli", + "title":"decode1", + "uri":"dli_spark_decode1.html", + "doc_type":"sqlreference", + "p_code":"253", + "code":"255" + }, + { + "desc":"This function is used to return the hash value of a.The return value is of the STRING type.The hash value is returned. If the value of a is null, an error is reported.The", + "product_code":"dli", + "title":"javahash", + "uri":"dli_spark_javahash.html", + "doc_type":"sqlreference", + "p_code":"253", + "code":"256" + }, + { + "desc":"This function is used to return the name of the largest level-1 partition that contains data in a partitioned table and read the data of this partition.The return value i", + "product_code":"dli", + "title":"max_pt", + "uri":"dli_spark_max_pt.html", + "doc_type":"sqlreference", + "p_code":"253", + "code":"257" + }, + { + "desc":"This function is used to sort input variables in ascending order and return the value at the position specified by nth.The return value is of the DOUBLE or DECIMAL type.V", + "product_code":"dli", + "title":"ordinal", + "uri":"dli_spark_ordinal.html", + "doc_type":"sqlreference", + "p_code":"253", + "code":"258" + }, + { + "desc":"This function is used to convert an array split by a fixed separator in a column into multiple rows.All columns used as keys must be placed before the columns to be trans", + "product_code":"dli", + "title":"trans_array", + "uri":"dli_spark_trans_array.html", + "doc_type":"sqlreference", + "p_code":"253", + "code":"259" + }, + { + "desc":"This function is used to truncate the number value to a specified decimal place.The return value is of the DOUBLE or DECIMAL type.The return rules are as follows:If the n", + "product_code":"dli", + "title":"trunc_numeric", + "uri":"dli_spark_trunc_numeric.html", + "doc_type":"sqlreference", + "p_code":"253", + "code":"260" + }, + { + "desc":"This function is used to convert a string from the application/x-www-form-urlencoded MIME format to regular characters.The return value is of the STRING type.UTF-8-encode", + "product_code":"dli", + "title":"url_decode", + "uri":"dli_spark_url_decode.html", + "doc_type":"sqlreference", + "p_code":"253", + "code":"261" + }, + { + "desc":"This function is used to encode a string in the application/x-www-form-urlencoded MIME format.url_encode(string [, string ])The return value is of the ST", + "product_code":"dli", + "title":"url_encode", + "uri":"dli_spark_url_encode.html", + "doc_type":"sqlreference", + "p_code":"253", + "code":"262" }, { "desc":"This statement is a basic query statement and is used to return the query results.The table to be queried must exist. Otherwise, an error is reported.To filter the record", @@ -915,7 +2364,7 @@ "uri":"dli_08_0150.html", "doc_type":"sqlreference", "p_code":"1", - "code":"102" + "code":"263" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -924,7 +2373,7 @@ "uri":"dli_08_0151.html", "doc_type":"sqlreference", "p_code":"1", - "code":"103" + "code":"264" }, { "desc":"This statement is used to filter the query results using the WHERE clause.All is used to return repeated rows. By default, all repeated rows are returned. It is followed ", @@ -932,8 +2381,8 @@ "title":"WHERE Filtering Clause", "uri":"dli_08_0152.html", "doc_type":"sqlreference", - "p_code":"103", - "code":"104" + "p_code":"264", + "code":"265" }, { "desc":"This statement is used to filter the query results using the HAVING clause.All is used to return repeated rows. By default, all repeated rows are returned. It is followed", @@ -941,8 +2390,8 @@ "title":"HAVING Filtering Clause", "uri":"dli_08_0153.html", "doc_type":"sqlreference", - "p_code":"103", - "code":"105" + "p_code":"264", + "code":"266" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -951,7 +2400,7 @@ "uri":"dli_08_0154.html", "doc_type":"sqlreference", "p_code":"1", - "code":"106" + "code":"267" }, { "desc":"This statement is used to order the result set of a query by the specified field.ASC/DESC: ASC sorts from the lowest value to the highest value. DESC sorts from the highe", @@ -959,8 +2408,8 @@ "title":"ORDER BY", "uri":"dli_08_0155.html", "doc_type":"sqlreference", - "p_code":"106", - "code":"107" + "p_code":"267", + "code":"268" }, { "desc":"This statement is used to achieve the partial sorting of tables according to fields.ASC/DESC: ASC sorts from the lowest value to the highest value. DESC sorts from the hi", @@ -968,8 +2417,8 @@ "title":"SORT BY", "uri":"dli_08_0156.html", "doc_type":"sqlreference", - "p_code":"106", - "code":"108" + "p_code":"267", + "code":"269" }, { "desc":"This statement is used to bucket a table and sort the table within buckets.CLUSTER BY: Buckets are created based on specified fields. Single fields and multiple fields ar", @@ -977,8 +2426,8 @@ "title":"CLUSTER BY", "uri":"dli_08_0157.html", "doc_type":"sqlreference", - "p_code":"106", - "code":"109" + "p_code":"267", + "code":"270" }, { "desc":"This statement is used to bucket a table according to the field.DISTRIBUTE BY: Buckets are created based on specified fields. A single field or multiple fields are suppor", @@ -986,8 +2435,8 @@ "title":"DISTRIBUTE BY", "uri":"dli_08_0158.html", "doc_type":"sqlreference", - "p_code":"106", - "code":"110" + "p_code":"267", + "code":"271" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -996,7 +2445,7 @@ "uri":"dli_08_0159.html", "doc_type":"sqlreference", "p_code":"1", - "code":"111" + "code":"272" }, { "desc":"This statement is used to group a table based on columns.Column-based GROUP BY can be categorized into single-column GROUP BY and multi-column GROUP BY.Single-column GROU", @@ -1004,8 +2453,8 @@ "title":"Column-Based GROUP BY", "uri":"dli_08_0160.html", "doc_type":"sqlreference", - "p_code":"111", - "code":"112" + "p_code":"272", + "code":"273" }, { "desc":"This statement is used to group a table according to expressions.The groupby_expression can contain a single field or multiple fields, and also can call aggregate functio", @@ -1013,8 +2462,8 @@ "title":"Expression-Based GROUP BY", "uri":"dli_08_0161.html", "doc_type":"sqlreference", - "p_code":"111", - "code":"113" + "p_code":"272", + "code":"274" }, { "desc":"This statement filters a table after grouping it using the HAVING clause.The groupby_expression can contain a single field or multiple fields, and can also call aggregate", @@ -1022,8 +2471,8 @@ "title":"GROUP BY Using HAVING", "uri":"dli_08_0162.html", "doc_type":"sqlreference", - "p_code":"111", - "code":"114" + "p_code":"272", + "code":"275" }, { "desc":"This statement is used to generate the aggregate row, super-aggregate row, and the total row. The statement can achieve multi-layer statistics from right to left and disp", @@ -1031,8 +2480,8 @@ "title":"ROLLUP", "uri":"dli_08_0163.html", "doc_type":"sqlreference", - "p_code":"111", - "code":"115" + "p_code":"272", + "code":"276" }, { "desc":"This statement is used to generate the cross-table row and achieve the cross-statistics of the GROUP BY field.GROUPING SETS is the expansion of GROUP BY. For example:SELE", @@ -1040,8 +2489,8 @@ "title":"GROUPING SETS", "uri":"dli_08_0164.html", "doc_type":"sqlreference", - "p_code":"111", - "code":"116" + "p_code":"272", + "code":"277" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1050,7 +2499,7 @@ "uri":"dli_08_0165.html", "doc_type":"sqlreference", "p_code":"1", - "code":"117" + "code":"278" }, { "desc":"This statement is used to join and return the rows that meet the JOIN conditions from two tables as the result set.JOIN/INNER JOIN: Only the records that meet the JOIN co", @@ -1058,8 +2507,8 @@ "title":"INNER JOIN", "uri":"dli_08_0166.html", "doc_type":"sqlreference", - "p_code":"117", - "code":"118" + "p_code":"278", + "code":"279" }, { "desc":"Join the left table with the right table and return all joined records of the left table. If no joined record is found, NULL will be returned.LEFT OUTER JOIN: Returns all", @@ -1067,8 +2516,8 @@ "title":"LEFT OUTER JOIN", "uri":"dli_08_0167.html", "doc_type":"sqlreference", - "p_code":"117", - "code":"119" + "p_code":"278", + "code":"280" }, { "desc":"Match the right table with the left table and return all matched records of the right table. If no matched record is found, NULL will be returned.RIGHT OUTER JOIN: Return", @@ -1076,8 +2525,8 @@ "title":"RIGHT OUTER JOIN", "uri":"dli_08_0168.html", "doc_type":"sqlreference", - "p_code":"117", - "code":"120" + "p_code":"278", + "code":"281" }, { "desc":"Join all records from the right table and the left table and return all joined records. If no joined record is found, NULL will be returned.FULL OUTER JOIN: Matches all r", @@ -1085,8 +2534,8 @@ "title":"FULL OUTER JOIN", "uri":"dli_08_0169.html", "doc_type":"sqlreference", - "p_code":"117", - "code":"121" + "p_code":"278", + "code":"282" }, { "desc":"This statement has the same function as INNER JOIN, that is, the result set that meet the WHERE condition is returned. However, IMPLICIT JOIN does not use the condition s", @@ -1094,8 +2543,8 @@ "title":"IMPLICIT JOIN", "uri":"dli_08_0170.html", "doc_type":"sqlreference", - "p_code":"117", - "code":"122" + "p_code":"278", + "code":"283" }, { "desc":"Cartesian JOIN joins each record of table A with all records in table B. For example, if there are m records in table A and n records in table B, m x n records will be ge", @@ -1103,8 +2552,8 @@ "title":"Cartesian JOIN", "uri":"dli_08_0171.html", "doc_type":"sqlreference", - "p_code":"117", - "code":"123" + "p_code":"278", + "code":"284" }, { "desc":"This statement is used to query the records that meet the JOIN condition from the left table.LEFT SEMI JOIN: Indicates to only return the records from the left table. LEF", @@ -1112,8 +2561,8 @@ "title":"LEFT SEMI JOIN", "uri":"dli_08_0172.html", "doc_type":"sqlreference", - "p_code":"117", - "code":"124" + "p_code":"278", + "code":"285" }, { "desc":"This statement is used to join multiple tables using unequal values and return the result set that meet the condition.The non_equi_join_condition is similar to join_condi", @@ -1121,8 +2570,8 @@ "title":"NON-EQUIJOIN", "uri":"dli_08_0173.html", "doc_type":"sqlreference", - "p_code":"117", - "code":"125" + "p_code":"278", + "code":"286" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1131,7 +2580,7 @@ "uri":"dli_08_0174.html", "doc_type":"sqlreference", "p_code":"1", - "code":"126" + "code":"287" }, { "desc":"Subqueries are nested in the WHERE clause, and the subquery result is used as the filtering condition.All is used to return repeated rows. By default, all repeated rows a", @@ -1139,8 +2588,8 @@ "title":"Subquery Nested by WHERE", "uri":"dli_08_0175.html", "doc_type":"sqlreference", - "p_code":"126", - "code":"127" + "p_code":"287", + "code":"288" }, { "desc":"This statement is used to nest subquery by FROM and use the subquery results as the data source of the external SELECT statement.All is used to return repeated rows. By d", @@ -1148,8 +2597,8 @@ "title":"Subquery Nested by FROM", "uri":"dli_08_0176.html", "doc_type":"sqlreference", - "p_code":"126", - "code":"128" + "p_code":"287", + "code":"289" }, { "desc":"This statement is used to embed a subquery in the HAVING clause. The subquery result is used as a part of the HAVING clause.All is used to return repeated rows. By defaul", @@ -1157,8 +2606,8 @@ "title":"Subquery Nested by HAVING", "uri":"dli_08_0177.html", "doc_type":"sqlreference", - "p_code":"126", - "code":"129" + "p_code":"287", + "code":"290" }, { "desc":"This statement is used to nest queries in the subquery.All is used to return repeated rows. By default, all repeated rows are returned. It is followed by asterisks (*) on", @@ -1166,8 +2615,8 @@ "title":"Multi-Layer Nested Subquery", "uri":"dli_08_0178.html", "doc_type":"sqlreference", - "p_code":"126", - "code":"130" + "p_code":"287", + "code":"291" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1176,7 +2625,7 @@ "uri":"dli_08_0179.html", "doc_type":"sqlreference", "p_code":"1", - "code":"131" + "code":"292" }, { "desc":"This statement is used to specify an alias for a table or the subquery result.table_reference: Can be a table, view, or subquery.As: Is used to connect to table_reference", @@ -1184,8 +2633,8 @@ "title":"AS for Table", "uri":"dli_08_0180.html", "doc_type":"sqlreference", - "p_code":"131", - "code":"132" + "p_code":"292", + "code":"293" }, { "desc":"This statement is used to specify an alias for a column.alias: gives an alias for the attr_expr field.AS: Whether to add AS does not affect the result.The to-be-queried t", @@ -1193,8 +2642,8 @@ "title":"AS for Column", "uri":"dli_08_0181.html", "doc_type":"sqlreference", - "p_code":"131", - "code":"133" + "p_code":"292", + "code":"294" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1203,7 +2652,7 @@ "uri":"dli_08_0182.html", "doc_type":"sqlreference", "p_code":"1", - "code":"134" + "code":"295" }, { "desc":"This statement is used to return the union set of multiple query results.UNION: The set operation is used to join the head and tail of a table based on certain conditions", @@ -1211,8 +2660,8 @@ "title":"UNION", "uri":"dli_08_0183.html", "doc_type":"sqlreference", - "p_code":"134", - "code":"135" + "p_code":"295", + "code":"296" }, { "desc":"This statement is used to return the intersection set of multiple query results.INTERSECT returns the intersection of multiple query results. The number of columns return", @@ -1220,8 +2669,8 @@ "title":"INTERSECT", "uri":"dli_08_0184.html", "doc_type":"sqlreference", - "p_code":"134", - "code":"136" + "p_code":"295", + "code":"297" }, { "desc":"This statement is used to return the difference set of two query results.EXCEPT minus the sets. A EXCEPT B indicates to remove the records that exist in both A and B from", @@ -1229,8 +2678,8 @@ "title":"EXCEPT", "uri":"dli_08_0185.html", "doc_type":"sqlreference", - "p_code":"134", - "code":"137" + "p_code":"295", + "code":"298" }, { "desc":"This statement is used to define the common table expression (CTE) using WITH...AS to simplify the query and make the result easier to read and maintain.cte_name: Name of", @@ -1239,7 +2688,7 @@ "uri":"dli_08_0186.html", "doc_type":"sqlreference", "p_code":"1", - "code":"138" + "code":"299" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1248,7 +2697,7 @@ "uri":"dli_08_0187.html", "doc_type":"sqlreference", "p_code":"1", - "code":"139" + "code":"300" }, { "desc":"This statement is used to display result_expression according to the joined results of input_expression and when_expression.CASE: Subquery is supported in basic CASE stat", @@ -1256,8 +2705,8 @@ "title":"Basic CASE Statement", "uri":"dli_08_0188.html", "doc_type":"sqlreference", - "p_code":"139", - "code":"140" + "p_code":"300", + "code":"301" }, { "desc":"This statement is used to obtain the value of boolean_expression for each WHEN statement in a specified order. Then return the first result_expression with the value TRUE", @@ -1265,8 +2714,8 @@ "title":"CASE Query Statement", "uri":"dli_08_0189.html", "doc_type":"sqlreference", - "p_code":"139", - "code":"141" + "p_code":"300", + "code":"302" }, { "desc":"This statement is used together with the window function. The OVER statement is used to group data and sort the data within the group. The window function is used to gene", @@ -1275,16 +2724,16 @@ "uri":"dli_08_0190.html", "doc_type":"sqlreference", "p_code":"1", - "code":"142" + "code":"303" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", "product_code":"dli", - "title":"Flink Opensource SQL 1.12 Syntax Reference", + "title":"Flink OpenSource SQL 1.12 Syntax Reference", "uri":"dli_08_0370.html", "doc_type":"sqlreference", "p_code":"", - "code":"143" + "code":"304" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1292,8 +2741,8 @@ "title":"Constraints and Definitions", "uri":"dli_08_0371.html", "doc_type":"sqlreference", - "p_code":"143", - "code":"144" + "p_code":"304", + "code":"305" }, { "desc":"STRING, BOOLEAN, BYTES, DECIMAL, TINYINT, SMALLINT, INTEGER, BIGINT, FLOAT, DOUBLE, DATE, TIME, TIMESTAMP, TIMESTAMP WITH LOCAL TIME ZONE, INTERVAL, ARRAY, MULTISET, MAP,", @@ -1301,8 +2750,8 @@ "title":"Supported Data Types", "uri":"dli_08_0372.html", "doc_type":"sqlreference", - "p_code":"144", - "code":"145" + "p_code":"305", + "code":"306" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1310,8 +2759,8 @@ "title":"Syntax", "uri":"dli_08_0373.html", "doc_type":"sqlreference", - "p_code":"144", - "code":"146" + "p_code":"305", + "code":"307" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1319,8 +2768,8 @@ "title":"Data Definition Language (DDL)", "uri":"dli_08_0374.html", "doc_type":"sqlreference", - "p_code":"146", - "code":"147" + "p_code":"307", + "code":"308" }, { "desc":"Create a table with a specified name.COMPUTED COLUMNA computed column is a virtual column generated using column_name AS computed_column_expression. A computed column eva", @@ -1328,8 +2777,8 @@ "title":"CREATE TABLE", "uri":"dli_08_0375.html", "doc_type":"sqlreference", - "p_code":"147", - "code":"148" + "p_code":"308", + "code":"309" }, { "desc":"Create a view with multiple layers nested in it to simplify the development process.IF NOT EXISTSIf the view already exists, nothing happens.Create a view named viewName.", @@ -1337,8 +2786,8 @@ "title":"CREATE VIEW", "uri":"dli_08_0376.html", "doc_type":"sqlreference", - "p_code":"147", - "code":"149" + "p_code":"308", + "code":"310" }, { "desc":"Create a user-defined function.For details about how to create a user-defined function, see User-Defined Functions (UDFs).IF NOT EXISTSIf the function already exists, not", @@ -1346,17 +2795,17 @@ "title":"CREATE FUNCTION", "uri":"dli_08_0377.html", "doc_type":"sqlreference", - "p_code":"147", - "code":"150" + "p_code":"308", + "code":"311" }, { - "desc":"SyntaxPrecautionsFlink SQL uses a lexical policy for identifier (table, attribute, function names) similar to Java:The case of identifiers is preserved whether or not the", + "desc":"SyntaxPrecautionsFlink SQL uses a lexical policy for identifier (table, attribute, function names) similar to Java:The case of identifiers is preserved whether they are q", "product_code":"dli", "title":"Data Manipulation Language (DML)", "uri":"dli_08_0378.html", "doc_type":"sqlreference", - "p_code":"146", - "code":"151" + "p_code":"307", + "code":"312" }, { "desc":"This section describes the Flink open source SQL 1.12 syntax supported by DLI. For details about the parameters and examples, see the syntax description.", @@ -1364,8 +2813,8 @@ "title":"Overview", "uri":"dli_08_0379.html", "doc_type":"sqlreference", - "p_code":"143", - "code":"152" + "p_code":"304", + "code":"313" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1373,8 +2822,8 @@ "title":"DDL Syntax", "uri":"dli_08_0380.html", "doc_type":"sqlreference", - "p_code":"143", - "code":"153" + "p_code":"304", + "code":"314" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1382,8 +2831,8 @@ "title":"Creating Source Tables", "uri":"dli_08_0381.html", "doc_type":"sqlreference", - "p_code":"153", - "code":"154" + "p_code":"314", + "code":"315" }, { "desc":"DataGen is used to generate random data for debugging and testing.NoneWhen you create a DataGen table, the table field type cannot be Array, Map, or Row. You can use COMP", @@ -1391,8 +2840,8 @@ "title":"DataGen Source Table", "uri":"dli_08_0382.html", "doc_type":"sqlreference", - "p_code":"154", - "code":"155" + "p_code":"315", + "code":"316" }, { "desc":"DLI reads data of Flink jobs from GaussDB(DWS). GaussDB(DWS) database kernel is compliant with PostgreSQL. The PostgreSQL database can store data of more complex types an", @@ -1400,8 +2849,8 @@ "title":"GaussDB(DWS) Source Table", "uri":"dli_08_0383.html", "doc_type":"sqlreference", - "p_code":"154", - "code":"156" + "p_code":"315", + "code":"317" }, { "desc":"Create a source stream to obtain data from HBase as input for jobs. HBase is a column-oriented distributed cloud storage system that features enhanced reliability, excell", @@ -1409,8 +2858,8 @@ "title":"HBase Source Table", "uri":"dli_08_0384.html", "doc_type":"sqlreference", - "p_code":"154", - "code":"157" + "p_code":"315", + "code":"318" }, { "desc":"The JDBC connector is a Flink's built-in connector to read data from a database.An enhanced datasource connection with the instances has been established, so that you can", @@ -1418,8 +2867,8 @@ "title":"JDBC Source Table", "uri":"dli_08_0385.html", "doc_type":"sqlreference", - "p_code":"154", - "code":"158" + "p_code":"315", + "code":"319" }, { "desc":"Create a source stream to obtain data from Kafka as input data for jobs.Apache Kafka is a fast, scalable, and fault-tolerant distributed message publishing and subscripti", @@ -1427,8 +2876,8 @@ "title":"Kafka Source Table", "uri":"dli_08_0386.html", "doc_type":"sqlreference", - "p_code":"154", - "code":"159" + "p_code":"315", + "code":"320" }, { "desc":"The MySQL CDC source table, that is, the MySQL streaming source table, reads all historical data in the database first and then smoothly switches data read to the Binlog ", @@ -1436,8 +2885,8 @@ "title":"MySQL CDC Source Table", "uri":"dli_08_0387.html", "doc_type":"sqlreference", - "p_code":"154", - "code":"160" + "p_code":"315", + "code":"321" }, { "desc":"The Postgres CDC source table, that is, Postgres streaming source table, is used to read the full snapshot data and changed data of the PostgreSQL database in sequence. T", @@ -1445,8 +2894,8 @@ "title":"Postgres CDC Source Table", "uri":"dli_08_0388.html", "doc_type":"sqlreference", - "p_code":"154", - "code":"161" + "p_code":"315", + "code":"322" }, { "desc":"Create a source stream to obtain data from Redis as input for jobs.An enhanced datasource connection has been created for DLI to connect to the Redis database, so that yo", @@ -1454,8 +2903,8 @@ "title":"Redis Source Table", "uri":"dli_08_0389.html", "doc_type":"sqlreference", - "p_code":"154", - "code":"162" + "p_code":"315", + "code":"323" }, { "desc":"Apache Kafka is a fast, scalable, and fault-tolerant distributed message publishing and subscription system. It delivers high throughput and built-in partitions and provi", @@ -1463,8 +2912,8 @@ "title":"Upsert Kafka Source Table", "uri":"dli_08_0390.html", "doc_type":"sqlreference", - "p_code":"154", - "code":"163" + "p_code":"315", + "code":"324" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1472,8 +2921,8 @@ "title":"Creating Result Tables", "uri":"dli_08_0391.html", "doc_type":"sqlreference", - "p_code":"153", - "code":"164" + "p_code":"314", + "code":"325" }, { "desc":"The BlackHole connector allows for swallowing all input records. It is designed for high-performance testing and UDF output. It is not a substantive sink. The BlackHole r", @@ -1481,8 +2930,8 @@ "title":"BlackHole Result Table", "uri":"dli_08_0392.html", "doc_type":"sqlreference", - "p_code":"164", - "code":"165" + "p_code":"325", + "code":"326" }, { "desc":"DLI can output Flink job data to the ClickHouse database. ClickHouse is a column-based database oriented to online analysis and processing. It supports SQL query and prov", @@ -1490,8 +2939,8 @@ "title":"ClickHouse Result Table", "uri":"dli_08_0393.html", "doc_type":"sqlreference", - "p_code":"164", - "code":"166" + "p_code":"325", + "code":"327" }, { "desc":"DLI outputs the Flink job output data to GaussDB(DWS). GaussDB(DWS) database kernel is compliant with PostgreSQL. The PostgreSQL database can store data of more complex t", @@ -1499,8 +2948,8 @@ "title":"GaussDB(DWS) Result Table", "uri":"dli_08_0394.html", "doc_type":"sqlreference", - "p_code":"164", - "code":"167" + "p_code":"325", + "code":"328" }, { "desc":"DLI outputs Flink job output data to Elasticsearch of Cloud Search Service (CSS). Elasticsearch is a popular enterprise-class Lucene-powered search server and provides th", @@ -1508,8 +2957,8 @@ "title":"Elasticsearch Result Table", "uri":"dli_08_0395.html", "doc_type":"sqlreference", - "p_code":"164", - "code":"168" + "p_code":"325", + "code":"329" }, { "desc":"DLI outputs the job data to HBase. HBase is a column-oriented distributed cloud storage system that features enhanced reliability, excellent performance, and elastic scal", @@ -1517,8 +2966,8 @@ "title":"HBase Result Table", "uri":"dli_08_0396.html", "doc_type":"sqlreference", - "p_code":"164", - "code":"169" + "p_code":"325", + "code":"330" }, { "desc":"DLI outputs the Flink job output data to RDS through the JDBC result table.An enhanced datasource connection with the instances has been established, so that you can conf", @@ -1526,8 +2975,8 @@ "title":"JDBC Result Table", "uri":"dli_08_0397.html", "doc_type":"sqlreference", - "p_code":"164", - "code":"170" + "p_code":"325", + "code":"331" }, { "desc":"DLI outputs the Flink job output data to Kafka through the Kafka result table.Apache Kafka is a fast, scalable, and fault-tolerant distributed message publishing and subs", @@ -1535,8 +2984,8 @@ "title":"Kafka Result Table", "uri":"dli_08_0398.html", "doc_type":"sqlreference", - "p_code":"164", - "code":"171" + "p_code":"325", + "code":"332" }, { "desc":"The Print connector is used to print output data to the error file or TaskManager file, making it easier for you to view the result in code debugging.NoneThe Print result", @@ -1544,8 +2993,8 @@ "title":"Print Result Table", "uri":"dli_08_0399.html", "doc_type":"sqlreference", - "p_code":"164", - "code":"172" + "p_code":"325", + "code":"333" }, { "desc":"DLI outputs the Flink job output data to Redis. Redis is a key-value storage system that supports multiple types of data structures. It can be used in scenarios such as c", @@ -1553,8 +3002,8 @@ "title":"Redis Result Table", "uri":"dli_08_0400.html", "doc_type":"sqlreference", - "p_code":"164", - "code":"173" + "p_code":"325", + "code":"334" }, { "desc":"Apache Kafka is a fast, scalable, and fault-tolerant distributed message publishing and subscription system. It delivers high throughput and built-in partitions and provi", @@ -1562,8 +3011,17 @@ "title":"Upsert Kafka Result Table", "uri":"dli_08_0401.html", "doc_type":"sqlreference", - "p_code":"164", - "code":"174" + "p_code":"325", + "code":"335" + }, + { + "desc":"The FileSystem result (sink) table is used to export data to the HDFS or OBS file system. It is applicable to scenarios such as data dumping, big data analysis, data back", + "product_code":"dli", + "title":"FileSystem Result Table", + "uri":"dli_08_0439.html", + "doc_type":"sqlreference", + "p_code":"325", + "code":"336" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1571,8 +3029,8 @@ "title":"Creating Dimension Tables", "uri":"dli_08_0402.html", "doc_type":"sqlreference", - "p_code":"153", - "code":"175" + "p_code":"314", + "code":"337" }, { "desc":"Create a GaussDB(DWS) table to connect to source streams for wide table generation.Ensure that you have created a GaussDB(DWS) cluster using your account.A DWS database t", @@ -1580,8 +3038,8 @@ "title":"GaussDB(DWS) Dimension Table", "uri":"dli_08_0403.html", "doc_type":"sqlreference", - "p_code":"175", - "code":"176" + "p_code":"337", + "code":"338" }, { "desc":"Create a Hbase dimension table to connect to the source streams for wide table generation.An enhanced datasource connection has been created for DLI to connect to HBase, ", @@ -1589,8 +3047,8 @@ "title":"HBase Dimension Table", "uri":"dli_08_0404.html", "doc_type":"sqlreference", - "p_code":"175", - "code":"177" + "p_code":"337", + "code":"339" }, { "desc":"Create a JDBC dimension table to connect to the source stream.You have created a JDBC instance for your account.When you create a Flink OpenSource SQL job, set Flink Vers", @@ -1598,8 +3056,8 @@ "title":"JDBC Dimension Table", "uri":"dli_08_0405.html", "doc_type":"sqlreference", - "p_code":"175", - "code":"178" + "p_code":"337", + "code":"340" }, { "desc":"Create a Redis table to connect to source streams for wide table generation.An enhanced datasource connection with Redis has been established, so that you can configure s", @@ -1607,8 +3065,8 @@ "title":"Redis Dimension Table", "uri":"dli_08_0406.html", "doc_type":"sqlreference", - "p_code":"175", - "code":"179" + "p_code":"337", + "code":"341" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1616,8 +3074,8 @@ "title":"Format", "uri":"dli_08_0407.html", "doc_type":"sqlreference", - "p_code":"153", - "code":"180" + "p_code":"314", + "code":"342" }, { "desc":"Apache Avro is supported for you to read and write Avro data based on an Avro schema with Flink. The Avro schema is derived from the table schema.KafkaUpsert KafkaCurrent", @@ -1625,8 +3083,8 @@ "title":"Avro", "uri":"dli_08_0408.html", "doc_type":"sqlreference", - "p_code":"180", - "code":"181" + "p_code":"342", + "code":"343" }, { "desc":"Canal is a Changelog Data Capture (CDC) tool that can stream changes in real-time from MySQL into other systems. Canal provides a unified format schema for changelog and ", @@ -1634,8 +3092,8 @@ "title":"Canal", "uri":"dli_08_0409.html", "doc_type":"sqlreference", - "p_code":"180", - "code":"182" + "p_code":"342", + "code":"344" }, { "desc":"The Avro Schema Registry (avro-confluent) format allows you to read records that were serialized by the io.confluent.kafka.serializers.KafkaAvroSerializer and to write re", @@ -1643,8 +3101,8 @@ "title":"Confluent Avro", "uri":"dli_08_0410.html", "doc_type":"sqlreference", - "p_code":"180", - "code":"183" + "p_code":"342", + "code":"345" }, { "desc":"The CSV format allows you to read and write CSV data based on a CSV schema. Currently, the CSV schema is derived from table schema.KafkaUpsert KafkaUse Kafka to send data", @@ -1652,8 +3110,8 @@ "title":"CSV", "uri":"dli_08_0411.html", "doc_type":"sqlreference", - "p_code":"180", - "code":"184" + "p_code":"342", + "code":"346" }, { "desc":"Debezium is a Changelog Data Capture (CDC) tool that can stream changes in real-time from other databases into Kafka. Debezium provides a unified format schema for change", @@ -1661,8 +3119,8 @@ "title":"Debezium", "uri":"dli_08_0412.html", "doc_type":"sqlreference", - "p_code":"180", - "code":"185" + "p_code":"342", + "code":"347" }, { "desc":"The JSON format allows you to read and write JSON data based on a JSON schema. Currently, the JSON schema is derived from table schema.KafkaUpsert KafkaElasticsearchIn th", @@ -1670,8 +3128,8 @@ "title":"JSON", "uri":"dli_08_0413.html", "doc_type":"sqlreference", - "p_code":"180", - "code":"186" + "p_code":"342", + "code":"348" }, { "desc":"Flink supports to interpret Maxwell JSON messages as INSERT/UPDATE/DELETE messages into Flink SQL system. This is useful in many cases to leverage this feature,such as:Sy", @@ -1679,8 +3137,8 @@ "title":"Maxwell", "uri":"dli_08_0414.html", "doc_type":"sqlreference", - "p_code":"180", - "code":"187" + "p_code":"342", + "code":"349" }, { "desc":"The raw format allows you to read and write raw (byte based) values as a single column.Note: This format encodes null values as null of the byte[] type. This may have lim", @@ -1688,8 +3146,8 @@ "title":"Raw", "uri":"dli_08_0415.html", "doc_type":"sqlreference", - "p_code":"180", - "code":"188" + "p_code":"342", + "code":"350" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1697,8 +3155,8 @@ "title":"DML Snytax", "uri":"dli_08_0416.html", "doc_type":"sqlreference", - "p_code":"143", - "code":"189" + "p_code":"304", + "code":"351" }, { "desc":"SyntaxDescriptionSELECT is used to select data from a table.ALL indicates that all results are returned.DISTINCT indicates that the duplicated results are removed.Precaut", @@ -1706,8 +3164,8 @@ "title":"SELECT", "uri":"dli_08_0417.html", "doc_type":"sqlreference", - "p_code":"189", - "code":"190" + "p_code":"351", + "code":"352" }, { "desc":"SyntaxDescriptionUNION is used to return the union set of multiple query results.INTERSECT is used to return the intersection of multiple query results.EXCEPT is used to ", @@ -1715,8 +3173,8 @@ "title":"Set Operations", "uri":"dli_08_0418.html", "doc_type":"sqlreference", - "p_code":"189", - "code":"191" + "p_code":"351", + "code":"353" }, { "desc":"DescriptionGroup Window is defined in GROUP BY. One record is generated from each group. Group Window involves the following functions:Array functionsArray functionsGroup", @@ -1724,8 +3182,8 @@ "title":"Window", "uri":"dli_08_0419.html", "doc_type":"sqlreference", - "p_code":"189", - "code":"192" + "p_code":"351", + "code":"354" }, { "desc":"SyntaxPrecautionsCurrently, only equi-joins are supported, for example, joins that have at least one conjunctive condition with an equality predicate. Arbitrary cross or ", @@ -1733,8 +3191,8 @@ "title":"JOIN", "uri":"dli_08_0420.html", "doc_type":"sqlreference", - "p_code":"189", - "code":"193" + "p_code":"351", + "code":"355" }, { "desc":"FunctionThis clause is used to sort data in ascending order on a time attribute.PrecautionsCurrently, only sorting by time attribute is supported.ExampleSort data in asce", @@ -1742,8 +3200,8 @@ "title":"OrderBy & Limit", "uri":"dli_08_0421.html", "doc_type":"sqlreference", - "p_code":"189", - "code":"194" + "p_code":"351", + "code":"356" }, { "desc":"Top-N queries ask for the N smallest or largest values ordered by columns. Both smallest and largest values sets are considered Top-N queries. Top-N queries are useful in", @@ -1751,8 +3209,8 @@ "title":"Top-N", "uri":"dli_08_0422.html", "doc_type":"sqlreference", - "p_code":"189", - "code":"195" + "p_code":"351", + "code":"357" }, { "desc":"Deduplication removes rows that duplicate over a set of columns, keeping only the first one or the last one.ROW_NUMBER(): Assigns a unique, sequential number to each row,", @@ -1760,8 +3218,8 @@ "title":"Deduplication", "uri":"dli_08_0423.html", "doc_type":"sqlreference", - "p_code":"189", - "code":"196" + "p_code":"351", + "code":"358" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1769,8 +3227,8 @@ "title":"Functions", "uri":"dli_08_0424.html", "doc_type":"sqlreference", - "p_code":"143", - "code":"197" + "p_code":"304", + "code":"359" }, { "desc":"DLI supports the following three types of user-defined functions (UDFs):Regular UDF: takes in one or more input parameters and returns a single result.User-defined table-", @@ -1778,8 +3236,8 @@ "title":"User-Defined Functions (UDFs)", "uri":"dli_08_0425.html", "doc_type":"sqlreference", - "p_code":"197", - "code":"198" + "p_code":"359", + "code":"360" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1787,8 +3245,8 @@ "title":"Built-In Functions", "uri":"dli_08_0426.html", "doc_type":"sqlreference", - "p_code":"197", - "code":"199" + "p_code":"359", + "code":"361" }, { "desc":"All data types can be compared by using relational operators and the result is returned as a BOOLEAN value.Relationship operators are binary operators. Two compared data ", @@ -1796,8 +3254,8 @@ "title":"Mathematical Operation Functions", "uri":"dli_08_0427.html", "doc_type":"sqlreference", - "p_code":"199", - "code":"200" + "p_code":"361", + "code":"362" }, { "desc":"SyntaxExampleTest input data.Test the data source kafka. The message content is as follows:{name:James,age:24,sex:male,grade:{math:95,science:[80,85],english:100}}\n{name:", @@ -1805,8 +3263,8 @@ "title":"String Functions", "uri":"dli_08_0428.html", "doc_type":"sqlreference", - "p_code":"199", - "code":"201" + "p_code":"361", + "code":"363" }, { "desc":"Table 1 lists the time functions supported by Flink OpenSource SQL.FunctionReturns a SQL date parsed from string in form of yyyy-MM-dd.Returns a SQL date parsed from stri", @@ -1814,8 +3272,8 @@ "title":"Temporal Functions", "uri":"dli_08_0429.html", "doc_type":"sqlreference", - "p_code":"199", - "code":"202" + "p_code":"361", + "code":"364" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1823,17 +3281,17 @@ "title":"Conditional Functions", "uri":"dli_08_0430.html", "doc_type":"sqlreference", - "p_code":"199", - "code":"203" + "p_code":"361", + "code":"365" }, { - "desc":"This function is used to forcibly convert types.If the input is NULL, NULL is returned.The following example converts the amount value to an integer.Flink jobs do not sup", + "desc":"This function is used to forcibly convert types.If the input is NULL, NULL is returned.The cast function does not support converting a string to the JSON format.The follo", "product_code":"dli", "title":"Type Conversion Functions", "uri":"dli_08_0431.html", "doc_type":"sqlreference", - "p_code":"199", - "code":"204" + "p_code":"361", + "code":"366" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1841,8 +3299,8 @@ "title":"Collection Functions", "uri":"dli_08_0432.html", "doc_type":"sqlreference", - "p_code":"199", - "code":"205" + "p_code":"361", + "code":"367" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1850,8 +3308,8 @@ "title":"Value Construction Functions", "uri":"dli_08_0433.html", "doc_type":"sqlreference", - "p_code":"199", - "code":"206" + "p_code":"361", + "code":"368" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1859,8 +3317,8 @@ "title":"Value Access Functions", "uri":"dli_08_0434.html", "doc_type":"sqlreference", - "p_code":"199", - "code":"207" + "p_code":"361", + "code":"369" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1868,8 +3326,8 @@ "title":"Hash Functions", "uri":"dli_08_0435.html", "doc_type":"sqlreference", - "p_code":"199", - "code":"208" + "p_code":"361", + "code":"370" }, { "desc":"An aggregate function performs a calculation operation on a set of input values and returns a value. For example, the COUNT function counts the number of rows retrieved b", @@ -1877,8 +3335,8 @@ "title":"Aggregate Functions", "uri":"dli_08_0436.html", "doc_type":"sqlreference", - "p_code":"199", - "code":"209" + "p_code":"361", + "code":"371" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1886,8 +3344,8 @@ "title":"Table-Valued Functions", "uri":"dli_08_0437.html", "doc_type":"sqlreference", - "p_code":"199", - "code":"210" + "p_code":"361", + "code":"372" }, { "desc":"The string_split function splits a target string into substrings based on the specified separator and returns a substring list.Create a Flink OpenSource SQL job by referr", @@ -1895,8 +3353,8 @@ "title":"string_split", "uri":"dli_08_0438.html", "doc_type":"sqlreference", - "p_code":"210", - "code":"211" + "p_code":"372", + "code":"373" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1905,7 +3363,7 @@ "uri":"dli_08_0289.html", "doc_type":"sqlreference", "p_code":"", - "code":"212" + "code":"374" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1913,8 +3371,8 @@ "title":"Constraints and Definitions", "uri":"dli_08_0290.html", "doc_type":"sqlreference", - "p_code":"212", - "code":"213" + "p_code":"374", + "code":"375" }, { "desc":"STRING, BOOLEAN, BYTES, DECIMAL, TINYINT, SMALLINT, INTEGER, BIGINT, FLOAT, DOUBLE, DATE, TIME, TIMESTAMP, TIMESTAMP WITH LOCAL TIME ZONE, INTERVAL, ARRAY, MULTISET, MAP,", @@ -1922,8 +3380,8 @@ "title":"Supported Data Types", "uri":"dli_08_0291.html", "doc_type":"sqlreference", - "p_code":"213", - "code":"214" + "p_code":"375", + "code":"376" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1931,8 +3389,8 @@ "title":"Syntax Definition", "uri":"dli_08_0292.html", "doc_type":"sqlreference", - "p_code":"213", - "code":"215" + "p_code":"375", + "code":"377" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1940,8 +3398,8 @@ "title":"Data Definition Language (DDL)", "uri":"dli_08_0293.html", "doc_type":"sqlreference", - "p_code":"215", - "code":"216" + "p_code":"377", + "code":"378" }, { "desc":"This clause is used to create a table with a specified name.COMPUTED COLUMNA computed column is a virtual column generated using column_name AS computed_column_expression", @@ -1949,8 +3407,8 @@ "title":"CREATE TABLE", "uri":"dli_08_0294.html", "doc_type":"sqlreference", - "p_code":"216", - "code":"217" + "p_code":"378", + "code":"379" }, { "desc":"Create a view with multiple layers nested in it to simplify the development process.IF NOT EXISTSIf the view already exists, nothing happens.Create a view named viewName.", @@ -1958,8 +3416,8 @@ "title":"CREATE VIEW", "uri":"dli_08_0295.html", "doc_type":"sqlreference", - "p_code":"216", - "code":"218" + "p_code":"378", + "code":"380" }, { "desc":"Create a user-defined function.IF NOT EXISTSIf the function already exists, nothing happens.LANGUAGE JAVA|SCALALanguage tag is used to instruct Flink runtime how to execu", @@ -1967,8 +3425,8 @@ "title":"CREATE FUNCTION", "uri":"dli_08_0296.html", "doc_type":"sqlreference", - "p_code":"216", - "code":"219" + "p_code":"378", + "code":"381" }, { "desc":"SyntaxPrecautionsFlink SQL uses a lexical policy for identifier (table, attribute, function names) similar to Java:The case of identifiers is preserved whether they are q", @@ -1976,8 +3434,8 @@ "title":"Data Manipulation Language (DML)", "uri":"dli_08_0297.html", "doc_type":"sqlreference", - "p_code":"215", - "code":"220" + "p_code":"377", + "code":"382" }, { "desc":"This section describes the Flink OpenSource SQL syntax supported by DLI. For details about the parameters and examples, see the syntax description.", @@ -1985,8 +3443,8 @@ "title":"Flink OpenSource SQL 1.10 Syntax", "uri":"dli_08_0298.html", "doc_type":"sqlreference", - "p_code":"212", - "code":"221" + "p_code":"374", + "code":"383" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -1994,8 +3452,8 @@ "title":"Data Definition Language (DDL)", "uri":"dli_08_0299.html", "doc_type":"sqlreference", - "p_code":"212", - "code":"222" + "p_code":"374", + "code":"384" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2003,8 +3461,8 @@ "title":"Creating a Source Table", "uri":"dli_08_0300.html", "doc_type":"sqlreference", - "p_code":"222", - "code":"223" + "p_code":"384", + "code":"385" }, { "desc":"Create a source stream to obtain data from Kafka as input data for jobs.Apache Kafka is a fast, scalable, and fault-tolerant distributed message publishing and subscripti", @@ -2012,8 +3470,8 @@ "title":"Kafka Source Table", "uri":"dli_08_0301.html", "doc_type":"sqlreference", - "p_code":"223", - "code":"224" + "p_code":"385", + "code":"386" }, { "desc":"Create a source stream to read data from DIS. DIS accesses user data and Flink job reads data from the DIS stream as input data for jobs. Flink jobs can quickly remove da", @@ -2021,8 +3479,8 @@ "title":"DIS Source Table", "uri":"dli_08_0302.html", "doc_type":"sqlreference", - "p_code":"223", - "code":"225" + "p_code":"385", + "code":"387" }, { "desc":"The JDBC connector is a Flink's built-in connector to read data from a database.An enhanced datasource connection with the database has been established, so that you can ", @@ -2030,8 +3488,8 @@ "title":"JDBC Source Table", "uri":"dli_08_0303.html", "doc_type":"sqlreference", - "p_code":"223", - "code":"226" + "p_code":"385", + "code":"388" }, { "desc":"DLI reads data of Flink jobs from GaussDB(DWS). GaussDB(DWS) database kernel is compliant with PostgreSQL. The PostgreSQL database can store data of more complex types an", @@ -2039,8 +3497,8 @@ "title":"GaussDB(DWS) Source Table", "uri":"dli_08_0304.html", "doc_type":"sqlreference", - "p_code":"223", - "code":"227" + "p_code":"385", + "code":"389" }, { "desc":"Create a source stream to obtain data from Redis as input for jobs.An enhanced datasource connection with Redis has been established, so that you can configure security g", @@ -2048,8 +3506,8 @@ "title":"Redis Source Table", "uri":"dli_08_0305.html", "doc_type":"sqlreference", - "p_code":"223", - "code":"228" + "p_code":"385", + "code":"390" }, { "desc":"Create a source stream to obtain data from HBase as input for jobs. HBase is a column-oriented distributed cloud storage system that features enhanced reliability, excell", @@ -2057,8 +3515,8 @@ "title":"HBase Source Table", "uri":"dli_08_0306.html", "doc_type":"sqlreference", - "p_code":"223", - "code":"229" + "p_code":"385", + "code":"391" }, { "desc":"You can call APIs to obtain data from the cloud ecosystem or an open source ecosystem and use the obtained data as input of Flink jobs.The customized source class needs t", @@ -2066,8 +3524,8 @@ "title":"userDefined Source Table", "uri":"dli_08_0358.html", "doc_type":"sqlreference", - "p_code":"223", - "code":"230" + "p_code":"385", + "code":"392" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2075,8 +3533,8 @@ "title":"Creating a Result Table", "uri":"dli_08_0307.html", "doc_type":"sqlreference", - "p_code":"222", - "code":"231" + "p_code":"384", + "code":"393" }, { "desc":"DLI exports Flink job data to ClickHouse result tables.ClickHouse is a column-based database oriented to online analysis and processing. It supports SQL query and provide", @@ -2084,8 +3542,8 @@ "title":"ClickHouse Result Table", "uri":"dli_08_0344.html", "doc_type":"sqlreference", - "p_code":"231", - "code":"232" + "p_code":"393", + "code":"394" }, { "desc":"DLI exports the output data of the Flink job to Kafka.Apache Kafka is a fast, scalable, and fault-tolerant distributed message publishing and subscription system. It deli", @@ -2093,8 +3551,8 @@ "title":"Kafka Result Table", "uri":"dli_08_0308.html", "doc_type":"sqlreference", - "p_code":"231", - "code":"233" + "p_code":"393", + "code":"395" }, { "desc":"DLI exports the output data of the Flink job to Kafka in upsert mode.Apache Kafka is a fast, scalable, and fault-tolerant distributed message publishing and subscription ", @@ -2102,8 +3560,8 @@ "title":"Upsert Kafka Result Table", "uri":"dli_08_0309.html", "doc_type":"sqlreference", - "p_code":"231", - "code":"234" + "p_code":"393", + "code":"396" }, { "desc":"DLI writes the Flink job output data into DIS. The data is filtered and imported to the DIS stream for future processing.DIS addresses the challenge of transmitting data ", @@ -2111,8 +3569,8 @@ "title":"DIS Result Table", "uri":"dli_08_0310.html", "doc_type":"sqlreference", - "p_code":"231", - "code":"235" + "p_code":"393", + "code":"397" }, { "desc":"DLI exports the output data of the Flink job to RDS.An enhanced datasource connection with the database has been established, so that you can configure security group rul", @@ -2120,8 +3578,8 @@ "title":"JDBC Result Table", "uri":"dli_08_0311.html", "doc_type":"sqlreference", - "p_code":"231", - "code":"236" + "p_code":"393", + "code":"398" }, { "desc":"DLI outputs the Flink job output data to GaussDB(DWS). GaussDB(DWS) database kernel is compliant with PostgreSQL. The PostgreSQL database can store data of more complex t", @@ -2129,8 +3587,8 @@ "title":"GaussDB(DWS) Result Table", "uri":"dli_08_0312.html", "doc_type":"sqlreference", - "p_code":"231", - "code":"237" + "p_code":"393", + "code":"399" }, { "desc":"DLI exports the output data of the Flink job to Redis. Redis is a storage system that supports multiple types of data structures such as key-value. It can be used in scen", @@ -2138,8 +3596,8 @@ "title":"Redis Result Table", "uri":"dli_08_0313.html", "doc_type":"sqlreference", - "p_code":"231", - "code":"238" + "p_code":"393", + "code":"400" }, { "desc":"DLI exports Flink job output data to SMN.SMN provides reliable and flexible large-scale message notification services to DLI. It significantly simplifies system coupling ", @@ -2147,8 +3605,8 @@ "title":"SMN Result Table", "uri":"dli_08_0314.html", "doc_type":"sqlreference", - "p_code":"231", - "code":"239" + "p_code":"393", + "code":"401" }, { "desc":"DLI outputs the job data to HBase. HBase is a column-oriented distributed cloud storage system that features enhanced reliability, excellent performance, and elastic scal", @@ -2156,8 +3614,8 @@ "title":"HBase Result Table", "uri":"dli_08_0315.html", "doc_type":"sqlreference", - "p_code":"231", - "code":"240" + "p_code":"393", + "code":"402" }, { "desc":"DLI exports Flink job output data to Elasticsearch of Cloud Search Service (CSS). Elasticsearch is a popular enterprise-class Lucene-powered search server and provides th", @@ -2165,8 +3623,8 @@ "title":"Elasticsearch Result Table", "uri":"dli_08_0316.html", "doc_type":"sqlreference", - "p_code":"231", - "code":"241" + "p_code":"393", + "code":"403" }, { "desc":"OpenTSDB is a distributed, scalable time series database based on HBase. OpenTSDB is designed to collect monitoring information of a large-scale cluster and query data in", @@ -2174,8 +3632,8 @@ "title":"OpenTSDB Result Table", "uri":"dli_08_0348.html", "doc_type":"sqlreference", - "p_code":"231", - "code":"242" + "p_code":"393", + "code":"404" }, { "desc":"Write your Java code to insert the processed data into a specified database supported by your cloud service.Implement the custom sink class :The custom sink class is inhe", @@ -2183,8 +3641,8 @@ "title":"User-defined Result Table", "uri":"dli_08_0347.html", "doc_type":"sqlreference", - "p_code":"231", - "code":"243" + "p_code":"393", + "code":"405" }, { "desc":"The print connector exports your data output to the error file or the out file of TaskManager. It is mainly used for code debugging and output viewing.Read data from Kafk", @@ -2192,8 +3650,8 @@ "title":"Print Result Table", "uri":"dli_08_0345.html", "doc_type":"sqlreference", - "p_code":"231", - "code":"244" + "p_code":"393", + "code":"406" }, { "desc":"You can create a file system result table to export data to a file system such as HDFS or OBS. After the data is generated, a non-DLI table can be created directly accord", @@ -2201,8 +3659,8 @@ "title":"File System Result Table", "uri":"dli_08_0346.html", "doc_type":"sqlreference", - "p_code":"231", - "code":"245" + "p_code":"393", + "code":"407" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2210,8 +3668,8 @@ "title":"Creating a Dimension Table", "uri":"dli_08_0317.html", "doc_type":"sqlreference", - "p_code":"222", - "code":"246" + "p_code":"384", + "code":"408" }, { "desc":"Create a JDBC dimension table to connect to the source stream.You have created a JDBC instance for your account.The RDS table is used to connect to the source stream.CREA", @@ -2219,8 +3677,8 @@ "title":"JDBC Dimension Table", "uri":"dli_08_0318.html", "doc_type":"sqlreference", - "p_code":"246", - "code":"247" + "p_code":"408", + "code":"409" }, { "desc":"Create a GaussDB(DWS) dimension table to connect to the input stream.You have created a GaussDB(DWS) instance for your account.Use an RDS table to connect to the source s", @@ -2228,8 +3686,8 @@ "title":"GaussDB(DWS) Dimension Table", "uri":"dli_08_0319.html", "doc_type":"sqlreference", - "p_code":"246", - "code":"248" + "p_code":"408", + "code":"410" }, { "desc":"Create a Hbase dimension table to connect to the source stream.An enhanced datasource connection has been created for DLI to connect to HBase, so that jobs can run on the", @@ -2237,8 +3695,8 @@ "title":"HBase Dimension Table", "uri":"dli_08_0320.html", "doc_type":"sqlreference", - "p_code":"246", - "code":"249" + "p_code":"408", + "code":"411" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2246,8 +3704,8 @@ "title":"Data Manipulation Language (DML)", "uri":"dli_08_0321.html", "doc_type":"sqlreference", - "p_code":"212", - "code":"250" + "p_code":"374", + "code":"412" }, { "desc":"SyntaxDescriptionThis clause is used to select data from a table.ALL indicates that all results are returned.DISTINCT indicates that the duplicated results are removed.Pr", @@ -2255,8 +3713,8 @@ "title":"SELECT", "uri":"dli_08_0322.html", "doc_type":"sqlreference", - "p_code":"250", - "code":"251" + "p_code":"412", + "code":"413" }, { "desc":"SyntaxDescriptionUNION is used to return the union set of multiple query results.INTERSECT is used to return the intersection of multiple query results.EXCEPT is used to ", @@ -2264,8 +3722,8 @@ "title":"Set Operations", "uri":"dli_08_0323.html", "doc_type":"sqlreference", - "p_code":"250", - "code":"252" + "p_code":"412", + "code":"414" }, { "desc":"DescriptionGroup Window is defined in GROUP BY. One record is generated from each group. Group Window involves the following functions:Array functionsArray functionsGroup", @@ -2273,8 +3731,8 @@ "title":"Window", "uri":"dli_08_0324.html", "doc_type":"sqlreference", - "p_code":"250", - "code":"253" + "p_code":"412", + "code":"415" }, { "desc":"SyntaxPrecautionsCurrently, only equi-joins are supported, for example, joins that have at least one conjunctive condition with an equality predicate. Arbitrary cross or ", @@ -2282,8 +3740,8 @@ "title":"JOIN", "uri":"dli_08_0325.html", "doc_type":"sqlreference", - "p_code":"250", - "code":"254" + "p_code":"412", + "code":"416" }, { "desc":"FunctionThis clause is used to sort data in ascending order on a time attribute.PrecautionsCurrently, only sorting by time attribute is supported.ExampleSort data in asce", @@ -2291,8 +3749,8 @@ "title":"OrderBy & Limit", "uri":"dli_08_0326.html", "doc_type":"sqlreference", - "p_code":"250", - "code":"255" + "p_code":"412", + "code":"417" }, { "desc":"Top-N queries ask for the N smallest or largest values ordered by columns. Both smallest and largest values sets are considered Top-N queries. Top-N queries are useful in", @@ -2300,8 +3758,8 @@ "title":"Top-N", "uri":"dli_08_0327.html", "doc_type":"sqlreference", - "p_code":"250", - "code":"256" + "p_code":"412", + "code":"418" }, { "desc":"Deduplication removes rows that duplicate over a set of columns, keeping only the first one or the last one.ROW_NUMBER(): Assigns a unique, sequential number to each row,", @@ -2309,8 +3767,8 @@ "title":"Deduplication", "uri":"dli_08_0328.html", "doc_type":"sqlreference", - "p_code":"250", - "code":"257" + "p_code":"412", + "code":"419" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2318,8 +3776,8 @@ "title":"Functions", "uri":"dli_08_0329.html", "doc_type":"sqlreference", - "p_code":"212", - "code":"258" + "p_code":"374", + "code":"420" }, { "desc":"DLI supports the following three types of user-defined functions (UDFs):Regular UDF: takes in one or more input parameters and returns a single result.User-defined table-", @@ -2327,8 +3785,8 @@ "title":"User-Defined Functions", "uri":"dli_08_0330.html", "doc_type":"sqlreference", - "p_code":"258", - "code":"259" + "p_code":"420", + "code":"421" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2336,8 +3794,8 @@ "title":"Built-In Functions", "uri":"dli_08_0331.html", "doc_type":"sqlreference", - "p_code":"258", - "code":"260" + "p_code":"420", + "code":"422" }, { "desc":"All data types can be compared by using relational operators and the result is returned as a BOOLEAN value.Relationship operators are binary operators. Two compared data ", @@ -2345,8 +3803,8 @@ "title":"Mathematical Operation Functions", "uri":"dli_08_0332.html", "doc_type":"sqlreference", - "p_code":"260", - "code":"261" + "p_code":"422", + "code":"423" }, { "desc":"SyntaxExampleTest input data.Test the data source kafka. The message content is as follows:\"{name:James,age:24,sex:male,grade:{math:95,science:[80,85],english:100}}\"\n\"{na", @@ -2354,8 +3812,8 @@ "title":"String Functions", "uri":"dli_08_0333.html", "doc_type":"sqlreference", - "p_code":"260", - "code":"262" + "p_code":"422", + "code":"424" }, { "desc":"Table 1 lists the temporal functions supported by Flink OpenSource SQL.FunctionReturns a date parsed from string in form of yyyy-MM-dd.Returns a date parsed from string i", @@ -2363,8 +3821,8 @@ "title":"Temporal Functions", "uri":"dli_08_0334.html", "doc_type":"sqlreference", - "p_code":"260", - "code":"263" + "p_code":"422", + "code":"425" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2372,8 +3830,8 @@ "title":"Conditional Functions", "uri":"dli_08_0335.html", "doc_type":"sqlreference", - "p_code":"260", - "code":"264" + "p_code":"422", + "code":"426" }, { "desc":"This function is used to forcibly convert types.If the input is NULL, NULL is returned.The following example converts the amount value to an integer.Flink jobs do not sup", @@ -2381,8 +3839,8 @@ "title":"Type Conversion Function", "uri":"dli_08_0336.html", "doc_type":"sqlreference", - "p_code":"260", - "code":"265" + "p_code":"422", + "code":"427" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2390,8 +3848,8 @@ "title":"Collection Functions", "uri":"dli_08_0337.html", "doc_type":"sqlreference", - "p_code":"260", - "code":"266" + "p_code":"422", + "code":"428" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2399,8 +3857,8 @@ "title":"Value Construction Functions", "uri":"dli_08_0338.html", "doc_type":"sqlreference", - "p_code":"260", - "code":"267" + "p_code":"422", + "code":"429" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2408,8 +3866,8 @@ "title":"Value Access Functions", "uri":"dli_08_0339.html", "doc_type":"sqlreference", - "p_code":"260", - "code":"268" + "p_code":"422", + "code":"430" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2417,8 +3875,8 @@ "title":"Hash Functions", "uri":"dli_08_0340.html", "doc_type":"sqlreference", - "p_code":"260", - "code":"269" + "p_code":"422", + "code":"431" }, { "desc":"An aggregate function performs a calculation operation on a set of input values and returns a value. For example, the COUNT function counts the number of rows retrieved b", @@ -2426,8 +3884,8 @@ "title":"Aggregate Function", "uri":"dli_08_0341.html", "doc_type":"sqlreference", - "p_code":"260", - "code":"270" + "p_code":"422", + "code":"432" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2435,8 +3893,8 @@ "title":"Table-Valued Functions", "uri":"dli_08_0342.html", "doc_type":"sqlreference", - "p_code":"260", - "code":"271" + "p_code":"422", + "code":"433" }, { "desc":"The split_cursor function can convert one row of records into multiple rows or convert one column of records into multiple columns. Table-valued functions can only be use", @@ -2444,8 +3902,8 @@ "title":"split_cursor", "uri":"dli_08_0357.html", "doc_type":"sqlreference", - "p_code":"271", - "code":"272" + "p_code":"433", + "code":"434" }, { "desc":"The string_split function splits a target string into substrings based on the specified separator and returns a substring list.Prepare test input data.Source table disSou", @@ -2453,8 +3911,8 @@ "title":"string_split", "uri":"dli_08_0356.html", "doc_type":"sqlreference", - "p_code":"271", - "code":"273" + "p_code":"433", + "code":"435" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2463,7 +3921,7 @@ "uri":"dli_08_0450.html", "doc_type":"sqlreference", "p_code":"", - "code":"274" + "code":"436" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2471,8 +3929,8 @@ "title":"Flink SQL Syntax", "uri":"dli_08_0233.html", "doc_type":"sqlreference", - "p_code":"274", - "code":"275" + "p_code":"436", + "code":"437" }, { "desc":"Currently, Flink SQL only supports the following operations: SELECT, FROM, WHERE, UNION, aggregation, window, JOIN between stream and table data, and JOIN between streams", @@ -2480,8 +3938,8 @@ "title":"SQL Syntax Constraints and Definitions", "uri":"dli_08_0075.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"276" + "p_code":"437", + "code":"438" }, { "desc":"This section describes the Flink SQL syntax list provided by DLI. For details about the parameters and examples, see the syntax description.", @@ -2489,8 +3947,8 @@ "title":"SQL Syntax Overview of Stream Jobs", "uri":"dli_08_0275.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"277" + "p_code":"437", + "code":"439" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2498,8 +3956,8 @@ "title":"Creating a Source Stream", "uri":"dli_08_0234.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"278" + "p_code":"437", + "code":"440" }, { "desc":"Create a source stream to obtain data from HBase of CloudTable as input data of the job. HBase is a column-oriented distributed cloud storage system that features enhance", @@ -2507,8 +3965,8 @@ "title":"CloudTable HBase Source Stream", "uri":"dli_08_0237.html", "doc_type":"sqlreference", - "p_code":"278", - "code":"279" + "p_code":"440", + "code":"441" }, { "desc":"Create a source stream to read data from DIS. DIS accesses user data and Flink job reads data from the DIS stream as input data for jobs. Flink jobs can quickly remove da", @@ -2516,8 +3974,8 @@ "title":"DIS Source Stream", "uri":"dli_08_0235.html", "doc_type":"sqlreference", - "p_code":"278", - "code":"280" + "p_code":"440", + "code":"442" }, { "desc":"DMS (Distributed Message Service) is a message middleware service based on distributed, high-availability clustering technology. It provides reliable, scalable, fully man", @@ -2525,8 +3983,8 @@ "title":"DMS Source Stream", "uri":"dli_08_0270.html", "doc_type":"sqlreference", - "p_code":"278", - "code":"281" + "p_code":"440", + "code":"443" }, { "desc":"Create a source stream to obtain data from Kafka as input data for jobs.Apache Kafka is a fast, scalable, and fault-tolerant distributed message publishing and subscripti", @@ -2534,8 +3992,8 @@ "title":"MRS Kafka Source Stream", "uri":"dli_08_0238.html", "doc_type":"sqlreference", - "p_code":"278", - "code":"282" + "p_code":"440", + "code":"444" }, { "desc":"Create a source stream to obtain data from Kafka as input data for jobs.Apache Kafka is a fast, scalable, and fault-tolerant distributed message publishing and subscripti", @@ -2543,8 +4001,8 @@ "title":"Open-Source Kafka Source Stream", "uri":"dli_08_0239.html", "doc_type":"sqlreference", - "p_code":"278", - "code":"283" + "p_code":"440", + "code":"445" }, { "desc":"Create a source stream to obtain data from OBS. DLI reads data stored by users in OBS as input data for jobs. OBS applies to various scenarios, such as big data analysis,", @@ -2552,8 +4010,8 @@ "title":"OBS Source Stream", "uri":"dli_08_0236.html", "doc_type":"sqlreference", - "p_code":"278", - "code":"284" + "p_code":"440", + "code":"446" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2561,8 +4019,8 @@ "title":"Creating a Sink Stream", "uri":"dli_08_0240.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"285" + "p_code":"437", + "code":"447" }, { "desc":"DLI exports the job output data to HBase of CloudTable. HBase is a column-oriented distributed cloud storage system that features enhanced reliability, excellent performa", @@ -2570,8 +4028,8 @@ "title":"CloudTable HBase Sink Stream", "uri":"dli_08_0243.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"286" + "p_code":"447", + "code":"448" }, { "desc":"DLI exports the job output data to OpenTSDB of CloudTable. OpenTSDB is a distributed, scalable time series database based on HBase. It stores time series data. Time serie", @@ -2579,8 +4037,8 @@ "title":"CloudTable OpenTSDB Sink Stream", "uri":"dli_08_0244.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"287" + "p_code":"447", + "code":"449" }, { "desc":"DLI exports the output data of the Flink job to OpenTSDB of MRS.OpenTSDB has been installed in the MRS cluster.In this scenario, jobs must run on the dedicated queue of D", @@ -2588,8 +4046,8 @@ "title":"MRS OpenTSDB Sink Stream", "uri":"dli_08_0286.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"288" + "p_code":"447", + "code":"450" }, { "desc":"DLI exports Flink job output data to Elasticsearch of Cloud Search Service (CSS). Elasticsearch is a popular enterprise-class Lucene-powered search server and provides th", @@ -2597,8 +4055,8 @@ "title":"CSS Elasticsearch Sink Stream", "uri":"dli_08_0252.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"289" + "p_code":"447", + "code":"451" }, { "desc":"DLI exports the Flink job output data to Redis of DCS. Redis is a storage system that supports multiple types of data structures such as key-value. It can be used in scen", @@ -2606,8 +4064,8 @@ "title":"DCS Sink Stream", "uri":"dli_08_0253.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"290" + "p_code":"447", + "code":"452" }, { "desc":"DLI outputs the job output data to Document Database Service (DDS).DDS is compatible with the MongoDB protocol and is secure, highly available, reliable, scalable, and ea", @@ -2615,8 +4073,8 @@ "title":"DDS Sink Stream", "uri":"dli_08_0249.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"291" + "p_code":"447", + "code":"453" }, { "desc":"DLI writes the Flink job output data into DIS. This cloud ecosystem is applicable to scenarios where data is filtered and imported to the DIS stream for future processing", @@ -2624,8 +4082,8 @@ "title":"DIS Sink Stream", "uri":"dli_08_0241.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"292" + "p_code":"447", + "code":"454" }, { "desc":"DMS (Distributed Message Service) is a message middleware service based on distributed, high-availability clustering technology. It provides reliable, scalable, fully man", @@ -2633,8 +4091,8 @@ "title":"DMS Sink Stream", "uri":"dli_08_0271.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"293" + "p_code":"447", + "code":"455" }, { "desc":"DLI outputs the Flink job output data to Data Warehouse Service (DWS). DWS database kernel is compliant with PostgreSQL. The PostgreSQL database can store data of more co", @@ -2642,8 +4100,8 @@ "title":"DWS Sink Stream (JDBC Mode)", "uri":"dli_08_0247.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"294" + "p_code":"447", + "code":"456" }, { "desc":"Create a sink stream to export Flink job data to DWS through OBS-based dumping, specifically, output Flink job data to OBS and then import data from OBS to DWS. For detai", @@ -2651,8 +4109,8 @@ "title":"DWS Sink Stream (OBS-based Dumping)", "uri":"dli_08_0248.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"295" + "p_code":"447", + "code":"457" }, { "desc":"DLI exports the output data of the Flink job to HBase of MRS.An MRS cluster has been created by using your account. DLI can interconnect with HBase clusters with Kerberos", @@ -2660,8 +4118,8 @@ "title":"MRS HBase Sink Stream", "uri":"dli_08_0255.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"296" + "p_code":"447", + "code":"458" }, { "desc":"DLI exports the output data of the Flink job to Kafka.Apache Kafka is a fast, scalable, and fault-tolerant distributed message publishing and subscription system. It deli", @@ -2669,8 +4127,8 @@ "title":"MRS Kafka Sink Stream", "uri":"dli_08_0254.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"297" + "p_code":"447", + "code":"459" }, { "desc":"DLI exports the output data of the Flink job to Kafka.Apache Kafka is a fast, scalable, and fault-tolerant distributed message publishing and subscription system. It deli", @@ -2678,8 +4136,8 @@ "title":"Open-Source Kafka Sink Stream", "uri":"dli_08_0257.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"298" + "p_code":"447", + "code":"460" }, { "desc":"You can create a sink stream to export data to a file system such as HDFS or OBS. After the data is generated, a non-DLI table can be created directly according to the ge", @@ -2687,8 +4145,8 @@ "title":"File System Sink Stream (Recommended)", "uri":"dli_08_0267.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"299" + "p_code":"447", + "code":"461" }, { "desc":"Create a sink stream to export DLI data to OBS. DLI can export the job analysis results to OBS. OBS applies to various scenarios, such as big data analysis, cloud-native ", @@ -2696,8 +4154,8 @@ "title":"OBS Sink Stream", "uri":"dli_08_0242.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"300" + "p_code":"447", + "code":"462" }, { "desc":"DLI outputs the Flink job output data to RDS. Currently, PostgreSQL and MySQL databases are supported. The PostgreSQL database can store data of more complex types and de", @@ -2705,8 +4163,8 @@ "title":"RDS Sink Stream", "uri":"dli_08_0245.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"301" + "p_code":"447", + "code":"463" }, { "desc":"DLI exports Flink job output data to SMN.SMN provides reliable and flexible large-scale message notification services to DLI. It significantly simplifies system coupling ", @@ -2714,8 +4172,8 @@ "title":"SMN Sink Stream", "uri":"dli_08_0251.html", "doc_type":"sqlreference", - "p_code":"285", - "code":"302" + "p_code":"447", + "code":"464" }, { "desc":"The temporary stream is used to simplify SQL logic. If complex SQL logic is followed, write SQL statements concatenated with temporary streams. The temporary stream is ju", @@ -2723,8 +4181,8 @@ "title":"Creating a Temporary Stream", "uri":"dli_08_0258.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"303" + "p_code":"437", + "code":"465" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2732,8 +4190,8 @@ "title":"Creating a Dimension Table", "uri":"dli_08_0259.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"304" + "p_code":"437", + "code":"466" }, { "desc":"Create a Redis table to connect to the source stream.For details about the JOIN syntax, see JOIN Between Stream Data and Table Data.Redis clusters are not supported.Ensur", @@ -2741,8 +4199,8 @@ "title":"Creating a Redis Table", "uri":"dli_08_0260.html", "doc_type":"sqlreference", - "p_code":"304", - "code":"305" + "p_code":"466", + "code":"467" }, { "desc":"Create an RDS/DWS table to connect to the source stream.For details about the JOIN syntax, see JOIN.Ensure that you have created a PostgreSQL or MySQL RDS instance in RDS", @@ -2750,8 +4208,8 @@ "title":"Creating an RDS Table", "uri":"dli_08_0261.html", "doc_type":"sqlreference", - "p_code":"304", - "code":"306" + "p_code":"466", + "code":"468" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2759,8 +4217,8 @@ "title":"Custom Stream Ecosystem", "uri":"dli_08_0272.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"307" + "p_code":"437", + "code":"469" }, { "desc":"Compile code to obtain data from the desired cloud ecosystem or open-source ecosystem as the input data of Flink jobs.The user-defined source class needs to inherit the R", @@ -2768,8 +4226,8 @@ "title":"Custom Source Stream", "uri":"dli_08_0273.html", "doc_type":"sqlreference", - "p_code":"307", - "code":"308" + "p_code":"469", + "code":"470" }, { "desc":"Compile code to write the data processed by DLI to a specified cloud ecosystem or open-source ecosystem.The user-defined sink class needs to inherit the RichSinkFunction ", @@ -2777,8 +4235,8 @@ "title":"Custom Sink Stream", "uri":"dli_08_0274.html", "doc_type":"sqlreference", - "p_code":"307", - "code":"309" + "p_code":"469", + "code":"471" }, { "desc":"Data type is a basic attribute of data and used to distinguish different types of data. Different data types occupy different storage space and support different operatio", @@ -2786,8 +4244,8 @@ "title":"Data Type", "uri":"dli_08_0207.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"310" + "p_code":"437", + "code":"472" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2795,8 +4253,8 @@ "title":"Built-In Functions", "uri":"dli_08_0086.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"311" + "p_code":"437", + "code":"473" }, { "desc":"All data types can be compared by using relational operators and the result is returned as a BOOLEAN value.Relationship operators are binary operators. Two compared data ", @@ -2804,17 +4262,17 @@ "title":"Mathematical Operation Functions", "uri":"dli_08_0191.html", "doc_type":"sqlreference", - "p_code":"311", - "code":"312" + "p_code":"473", + "code":"474" }, { - "desc":"The common character string functions of DLI are as follows:FunctionConcatenates two character strings.Concatenates two character strings.SyntaxVARCHAR VARCHAR a || VARCH", + "desc":"The common string functions of DLI are as follows:FunctionConcatenates two strings.Concatenates two strings.SyntaxVARCHAR VARCHAR a || VARCHAR bParametersa: string.b: str", "product_code":"dli", "title":"String Functions", "uri":"dli_08_0096.html", "doc_type":"sqlreference", - "p_code":"311", - "code":"313" + "p_code":"473", + "code":"475" }, { "desc":"Table 1 lists the time functions supported by Flink SQL.None", @@ -2822,8 +4280,8 @@ "title":"Temporal Functions", "uri":"dli_08_0097.html", "doc_type":"sqlreference", - "p_code":"311", - "code":"314" + "p_code":"473", + "code":"476" }, { "desc":"This function is used to forcibly convert types.If the input is NULL, NULL is returned.Flink jobs do not support the conversion of bigint to timestamp using CAST. You can", @@ -2831,8 +4289,8 @@ "title":"Type Conversion Functions", "uri":"dli_08_0112.html", "doc_type":"sqlreference", - "p_code":"311", - "code":"315" + "p_code":"473", + "code":"477" }, { "desc":"An aggregate function performs a calculation operation on a set of input values and returns a value. For example, the COUNT function counts the number of rows retrieved b", @@ -2840,8 +4298,8 @@ "title":"Aggregate Functions", "uri":"dli_08_0104.html", "doc_type":"sqlreference", - "p_code":"311", - "code":"316" + "p_code":"473", + "code":"478" }, { "desc":"Table-valued functions can convert one row of records into multiple rows or convert one column of records into multiple columns. Table-valued functions can only be used i", @@ -2849,8 +4307,8 @@ "title":"Table-Valued Functions", "uri":"dli_08_0206.html", "doc_type":"sqlreference", - "p_code":"311", - "code":"317" + "p_code":"473", + "code":"479" }, { "desc":"Example:The returned number of elements in the array is 3.HELLO WORLD is returned.", @@ -2858,8 +4316,8 @@ "title":"Other Functions", "uri":"dli_08_0101.html", "doc_type":"sqlreference", - "p_code":"311", - "code":"318" + "p_code":"473", + "code":"480" }, { "desc":"DLI supports the following three types of user-defined functions (UDFs):Regular UDF: takes in one or more input parameters and returns a single result.User-defined table-", @@ -2867,8 +4325,8 @@ "title":"User-Defined Functions", "uri":"dli_08_0099.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"319" + "p_code":"437", + "code":"481" }, { "desc":"Table 1 describes the basic geospatial geometric elements.You can build complex geospatial geometries based on basic geospatial geometric elements. Table 2 describes the ", @@ -2876,8 +4334,8 @@ "title":"Geographical Functions", "uri":"dli_08_0209.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"320" + "p_code":"437", + "code":"482" }, { "desc":"SyntaxDescriptionThe SELECT statement is used to select data from a table or insert constant data into a table.PrecautionsThe table to be queried must exist. Otherwise, a", @@ -2885,8 +4343,8 @@ "title":"SELECT", "uri":"dli_08_0102.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"321" + "p_code":"437", + "code":"483" }, { "desc":"SyntaxorDescriptionIf the value of value is value1, result1 is returned. If the value is not any of the values listed in the clause, resultZ is returned. If no else state", @@ -2894,8 +4352,8 @@ "title":"Condition Expression", "uri":"dli_08_0103.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"322" + "p_code":"437", + "code":"484" }, { "desc":"DescriptionGroup Window is defined in GROUP BY. One record is generated from each group. Group Window involves the following functions:time_attr can be processing-time or", @@ -2903,8 +4361,8 @@ "title":"Window", "uri":"dli_08_0218.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"323" + "p_code":"437", + "code":"485" }, { "desc":"The JOIN operation allows you to query data from a table and write the query result to the sink stream. Currently, only RDSs and DCS Redis tables are supported. The ON ke", @@ -2912,8 +4370,8 @@ "title":"JOIN Between Stream Data and Table Data", "uri":"dli_08_0106.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"324" + "p_code":"437", + "code":"486" }, { "desc":"Flink provides two time models: processing time and event time.DLI allows you to specify the time model during creation of the source stream and temporary stream.Processi", @@ -2921,8 +4379,8 @@ "title":"Configuring Time Models", "uri":"dli_08_0107.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"325" + "p_code":"437", + "code":"487" }, { "desc":"Complex event processing (CEP) is used to detect complex patterns in endless data streams so as to identify and search patterns in various data rows. Pattern matching is ", @@ -2930,8 +4388,8 @@ "title":"Pattern Matching", "uri":"dli_08_0108.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"326" + "p_code":"437", + "code":"488" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2939,8 +4397,8 @@ "title":"StreamingML", "uri":"dli_08_0109.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"327" + "p_code":"437", + "code":"489" }, { "desc":"Anomaly detection applies to various scenarios, including intrusion detection, financial fraud detection, sensor data monitoring, medical diagnosis, natural data detectio", @@ -2948,8 +4406,8 @@ "title":"Anomaly Detection", "uri":"dli_08_0110.html", "doc_type":"sqlreference", - "p_code":"327", - "code":"328" + "p_code":"489", + "code":"490" }, { "desc":"Modeling and forecasting time series is a common task in many business verticals. Modeling is used to extract meaningful statistics and other characteristics of the data.", @@ -2957,8 +4415,8 @@ "title":"Time Series Forecasting", "uri":"dli_08_0111.html", "doc_type":"sqlreference", - "p_code":"327", - "code":"329" + "p_code":"489", + "code":"491" }, { "desc":"Clustering algorithms belong to unsupervised algorithms. K-Means, a clustering algorithm, partitions data points into related clusters by calculating the distance between", @@ -2966,8 +4424,8 @@ "title":"Real-Time Clustering", "uri":"dli_08_0216.html", "doc_type":"sqlreference", - "p_code":"327", - "code":"330" + "p_code":"489", + "code":"492" }, { "desc":"Deep learning has a wide range of applications in many industries, such as image classification, image recognition, and speech recognition. DLI provides several functions", @@ -2975,17 +4433,17 @@ "title":"Deep Learning Model Prediction", "uri":"dli_08_0088.html", "doc_type":"sqlreference", - "p_code":"327", - "code":"331" + "p_code":"489", + "code":"493" }, { - "desc":"Flink SQL reserves some strings as keywords. If you want to use the following character strings as field names, ensure that they are enclosed by back quotes, for example,", + "desc":"Flink SQL reserves some strings as keywords. If you want to use the following strings as field names, ensure that they are enclosed by back quotes, for example, `value` a", "product_code":"dli", "title":"Reserved Keywords", "uri":"dli_08_0125.html", "doc_type":"sqlreference", - "p_code":"275", - "code":"332" + "p_code":"437", + "code":"494" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -2994,7 +4452,7 @@ "uri":"dli_08_0001.html", "doc_type":"sqlreference", "p_code":"", - "code":"333" + "code":"495" }, { "desc":"None.Aggregate function.", @@ -3002,8 +4460,8 @@ "title":"aggregate_func", "uri":"dli_08_0002.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"334" + "p_code":"495", + "code":"496" }, { "desc":"None.Alias, which must be STRING type. It can be assigned to a field, table, view, or subquery.", @@ -3011,8 +4469,8 @@ "title":"alias", "uri":"dli_08_0003.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"335" + "p_code":"495", + "code":"497" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -3020,8 +4478,8 @@ "title":"attr_expr", "uri":"dli_08_0004.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"336" + "p_code":"495", + "code":"498" }, { "desc":"None.List of attr_expr, which is separated by commas (,).", @@ -3029,8 +4487,8 @@ "title":"attr_expr_list", "uri":"dli_08_0005.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"337" + "p_code":"495", + "code":"499" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -3038,8 +4496,8 @@ "title":"attrs_value_set_expr", "uri":"dli_08_0006.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"338" + "p_code":"495", + "code":"500" }, { "desc":"None.Return a boolean expression.", @@ -3047,8 +4505,8 @@ "title":"boolean_expression", "uri":"dli_08_0007.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"339" + "p_code":"495", + "code":"501" }, { "desc":"None.Formal parameter for function call. It is usually a field name, which is the same as col_name.", @@ -3056,8 +4514,8 @@ "title":"col", "uri":"dli_08_0009.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"340" + "p_code":"495", + "code":"502" }, { "desc":"None.Column (field) description, which must be STRING type and cannot exceed 256 bytes.", @@ -3065,8 +4523,8 @@ "title":"col_comment", "uri":"dli_08_0010.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"341" + "p_code":"495", + "code":"503" }, { "desc":"None.Column name, which must be STRING type and cannot exceed 128 bytes.", @@ -3074,8 +4532,8 @@ "title":"col_name", "uri":"dli_08_0011.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"342" + "p_code":"495", + "code":"504" }, { "desc":"None.Field list, which consists of one col_name or more. If there is more than one col_name, separate them by using a comma (,).", @@ -3083,8 +4541,8 @@ "title":"col_name_list", "uri":"dli_08_0012.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"343" + "p_code":"495", + "code":"505" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -3092,8 +4550,8 @@ "title":"condition", "uri":"dli_08_0013.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"344" + "p_code":"495", + "code":"506" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -3101,8 +4559,8 @@ "title":"condition_list", "uri":"dli_08_0014.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"345" + "p_code":"495", + "code":"507" }, { "desc":"None.Common expression name.", @@ -3110,8 +4568,8 @@ "title":"cte_name", "uri":"dli_08_0015.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"346" + "p_code":"495", + "code":"508" }, { "desc":"None.Data type. Currently, only the primitive data types are supported.", @@ -3119,8 +4577,8 @@ "title":"data_type", "uri":"dli_08_0016.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"347" + "p_code":"495", + "code":"509" }, { "desc":"None.Database description, which must be STRING type and cannot exceed 256 characters.", @@ -3128,8 +4586,8 @@ "title":"db_comment", "uri":"dli_08_0017.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"348" + "p_code":"495", + "code":"510" }, { "desc":"None.Database name, which must be STRING type and cannot exceed 128 bytes.", @@ -3137,8 +4595,8 @@ "title":"db_name", "uri":"dli_08_0018.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"349" + "p_code":"495", + "code":"511" }, { "desc":"None.Returned result for the ELSE clause of the CASE WHEN statement.", @@ -3146,8 +4604,8 @@ "title":"else_result_expression", "uri":"dli_08_0019.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"350" + "p_code":"495", + "code":"512" }, { "desc":"| AVRO| CSV| JSON| ORC| PARQUETCurrently, the preceding formats are supported.Both USING and STORED AS can be used for specifying the data format. You can specify the pre", @@ -3155,8 +4613,8 @@ "title":"file_format", "uri":"dli_08_0020.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"351" + "p_code":"495", + "code":"513" }, { "desc":"None.File path, which is the OBS path", @@ -3164,8 +4622,8 @@ "title":"file_path", "uri":"dli_08_0021.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"352" + "p_code":"495", + "code":"514" }, { "desc":"None.Function name, which must be STRING type.", @@ -3173,8 +4631,8 @@ "title":"function_name", "uri":"dli_08_0022.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"353" + "p_code":"495", + "code":"515" }, { "desc":"None.Expression that includes GROUP BY.", @@ -3182,8 +4640,8 @@ "title":"groupby_expression", "uri":"dli_08_0023.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"354" + "p_code":"495", + "code":"516" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -3191,8 +4649,8 @@ "title":"having_condition", "uri":"dli_08_0024.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"355" + "p_code":"495", + "code":"517" }, { "desc":"None.Input expression of the CASE WHEN statement.", @@ -3200,8 +4658,8 @@ "title":"input_expression", "uri":"dli_08_0026.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"356" + "p_code":"495", + "code":"518" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -3209,8 +4667,8 @@ "title":"join_condition", "uri":"dli_08_0029.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"357" + "p_code":"495", + "code":"519" }, { "desc":"None.The condition of an inequality join.", @@ -3218,8 +4676,8 @@ "title":"non_equi_join_condition", "uri":"dli_08_0030.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"358" + "p_code":"495", + "code":"520" }, { "desc":"None.Maximum number of output lines specified by LIMIT. Which must be INT type.", @@ -3227,8 +4685,8 @@ "title":"number", "uri":"dli_08_0031.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"359" + "p_code":"495", + "code":"521" }, { "desc":"None.Partition column name, that is, partition field name, which must be STRING type.", @@ -3236,8 +4694,8 @@ "title":"partition_col_name", "uri":"dli_08_0034.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"360" + "p_code":"495", + "code":"522" }, { "desc":"None.Partition column value, that is, partition field value.", @@ -3245,8 +4703,8 @@ "title":"partition_col_value", "uri":"dli_08_0035.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"361" + "p_code":"495", + "code":"523" }, { "desc":"partition_specs : (partition_col_name = partition_col_value, partition_col_name = partition_col_value, ...);Table partition list, which is expressed by using key=value pa", @@ -3254,8 +4712,8 @@ "title":"partition_specs", "uri":"dli_08_0036.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"362" + "p_code":"495", + "code":"524" }, { "desc":"None.Property name, which must be STRING type.", @@ -3263,8 +4721,8 @@ "title":"property_name", "uri":"dli_08_0037.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"363" + "p_code":"495", + "code":"525" }, { "desc":"None.Property value, which must be STRING type.", @@ -3272,8 +4730,8 @@ "title":"property_value", "uri":"dli_08_0038.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"364" + "p_code":"495", + "code":"526" }, { "desc":"None.Pattern matching string, which supports wildcard matching.", @@ -3281,8 +4739,8 @@ "title":"regex_expression", "uri":"dli_08_0039.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"365" + "p_code":"495", + "code":"527" }, { "desc":"None.Returned result for the THEN clause of the CASE WHEN statement.", @@ -3290,8 +4748,8 @@ "title":"result_expression", "uri":"dli_08_0040.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"366" + "p_code":"495", + "code":"528" }, { "desc":"None.Query clause for the basic SELECT statement.", @@ -3299,8 +4757,8 @@ "title":"select_statement", "uri":"dli_08_0042.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"367" + "p_code":"495", + "code":"529" }, { "desc":"None.Separator, which can be customized by users, for example, comma (,), semicolon (;), and colon (:). Which must be CHAR type.", @@ -3308,8 +4766,8 @@ "title":"separator", "uri":"dli_08_0043.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"368" + "p_code":"495", + "code":"530" }, { "desc":"None.SQL statement containing the common expression defined by cte_name.", @@ -3317,8 +4775,8 @@ "title":"sql_containing_cte_name", "uri":"dli_08_0045.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"369" + "p_code":"495", + "code":"531" }, { "desc":"None.Subquery.", @@ -3326,8 +4784,8 @@ "title":"sub_query", "uri":"dli_08_0046.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"370" + "p_code":"495", + "code":"532" }, { "desc":"None.Table description, which must be STRING type and cannot exceed 256 bytes.", @@ -3335,8 +4793,8 @@ "title":"table_comment", "uri":"dli_08_0047.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"371" + "p_code":"495", + "code":"533" }, { "desc":"NoneTable name, which cannot exceed 128 bytes. The string type and \"$\" symbol are supported.", @@ -3344,8 +4802,8 @@ "title":"table_name", "uri":"dli_08_0048.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"372" + "p_code":"495", + "code":"534" }, { "desc":"None.Table property list, which is expressed by using key=value pairs. key represents property_name, and value represents property_value. If there is more than one key=va", @@ -3353,8 +4811,8 @@ "title":"table_properties", "uri":"dli_08_0049.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"373" + "p_code":"495", + "code":"535" }, { "desc":"None.Table or view name, which must be STRING type. It can also be a subquery. If it is subquery, an alias must also be provided.", @@ -3362,8 +4820,8 @@ "title":"table_reference", "uri":"dli_08_0050.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"374" + "p_code":"495", + "code":"536" }, { "desc":"None.When expression of the CASE WHEN statement. It is used for matching with the input expression.", @@ -3371,8 +4829,8 @@ "title":"when_expression", "uri":"dli_08_0053.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"375" + "p_code":"495", + "code":"537" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -3380,17 +4838,17 @@ "title":"where_condition", "uri":"dli_08_0054.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"376" + "p_code":"495", + "code":"538" }, { - "desc":"None.Analysis window function. For details, see Window Functions.", + "desc":"NoneAnalysis window function.", "product_code":"dli", "title":"window_function", "uri":"dli_08_0055.html", "doc_type":"sqlreference", - "p_code":"333", - "code":"377" + "p_code":"495", + "code":"539" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -3399,7 +4857,7 @@ "uri":"dli_08_0060.html", "doc_type":"sqlreference", "p_code":"", - "code":"378" + "code":"540" }, { "desc":"All data types can be compared by using relational operators and the result is returned as a BOOLEAN value.Relationship operators are binary operators. Two compared data ", @@ -3407,8 +4865,8 @@ "title":"Relational Operators", "uri":"dli_08_0061.html", "doc_type":"sqlreference", - "p_code":"378", - "code":"379" + "p_code":"540", + "code":"541" }, { "desc":"Arithmetic operators include binary operators and unary operators. For both types of operators, the returned results are numbers. Table 1 lists the arithmetic operators s", @@ -3416,8 +4874,8 @@ "title":"Arithmetic Operators", "uri":"dli_08_0062.html", "doc_type":"sqlreference", - "p_code":"378", - "code":"380" + "p_code":"540", + "code":"542" }, { "desc":"Common logical operators include AND, OR, and NOT. The operation result can be TRUE, FALSE, or NULL (which means unknown). The priorities of the operators are as follows:", @@ -3425,8 +4883,8 @@ "title":"Logical Operators", "uri":"dli_08_0063.html", "doc_type":"sqlreference", - "p_code":"378", - "code":"381" + "p_code":"540", + "code":"543" }, { "desc":"HUAWEI CLOUD Help Center presents technical documents to help you quickly get started with HUAWEI CLOUD services. The technical documents include Service Overview, Price Details, Purchase Guide, User Guide, API Reference, Best Practices, FAQs, and Videos.", @@ -3435,6 +4893,6 @@ "uri":"dli_08_00005.html", "doc_type":"sqlreference", "p_code":"", - "code":"382" + "code":"544" } ] \ No newline at end of file diff --git a/docs/dli/sqlreference/dli_08_00005.html b/docs/dli/sqlreference/dli_08_00005.html index 7d779899..016ac09d 100644 --- a/docs/dli/sqlreference/dli_08_00005.html +++ b/docs/dli/sqlreference/dli_08_00005.html @@ -8,9 +8,15 @@ -

2023-05-11

+

2024-02-27

-

This is the first official release.

+

Modified the following section:

+

Added the description that DDS is fully compatible with the MongoDB protocol to Creating a DLI Table and Associating It with DDS.

+ + +

2023-05-11

+ +

This issue is the first official release.

diff --git a/docs/dli/sqlreference/dli_08_0055.html b/docs/dli/sqlreference/dli_08_0055.html index e5e8d7d6..dc002022 100644 --- a/docs/dli/sqlreference/dli_08_0055.html +++ b/docs/dli/sqlreference/dli_08_0055.html @@ -1,9 +1,9 @@

window_function

-

Syntax

None.

+

Syntax

None

-

Description

Analysis window function. For details, see Window Functions.

+

Description

Analysis window function.

diff --git a/docs/dli/sqlreference/dli_08_0058.html b/docs/dli/sqlreference/dli_08_0058.html index 276beb5b..5d41f854 100644 --- a/docs/dli/sqlreference/dli_08_0058.html +++ b/docs/dli/sqlreference/dli_08_0058.html @@ -32,7 +32,7 @@

STRING

-

Character string

+

String

-

@@ -152,7 +152,7 @@

CHAR

-

Fixed-length character string

+

Fixed-length string

-

@@ -165,7 +165,7 @@

VARCHAR

-

Variable-length character string

+

Variable-length string

-

@@ -196,7 +196,7 @@

INT

Signed integer with a storage space of 4 bytes. Its value ranges from –2147483648 to 2147483647. If this field is NULL, value 0 is used by default.

-

STRING

Character string.

+

STRING

String.

FLOAT

Single-precision floating point with a storage space of 4 bytes. If this field is NULL, value 0 is used by default.

Due to the limitation of storage methods of floating point data, do not use the formula a==b to check whether two floating point values are the same. You are advised to use the formula: absolute value of (a-b) <= EPSILON. EPSILON indicates the allowed error range which is usually 1.19209290E-07F. If the formula is satisfied, the compared two floating point values are considered the same.

@@ -214,9 +214,9 @@

BIGINT/LONG

Signed integer with a storage space of 8 bytes. Its value ranges from –9223372036854775808 to 9223372036854775807. It does not support scientific notation. If this field is NULL, value 0 is used by default.

-

TIMESTAMP

Legacy UNIX TIMESTAMP is supported, providing the precision up to the microsecond level. TIMESTAMP is defined by the difference between the specified time and UNIX epoch (UNIX epoch time: 1970-01-01 00:00:00) in seconds. Data of the STRING type supports implicit conversion to TIMESTAMP. (The STRING must in the yyyy-MM-dd HH:MM:SS[.ffffff] format. The precision after the decimal point is optional.)

+

TIMESTAMP

Legacy UNIX TIMESTAMP is supported, providing the precision up to the microsecond level. TIMESTAMP is defined by the difference between the specified time and UNIX epoch (UNIX epoch time: 1970-01-01 00:00:00) in seconds. The data type STRING can be implicitly converted to TIMESTAMP, but it must be in the yyyy-MM-dd HH:mm:SS[.ffffff] format. The precision after the decimal point is optional.)

-

CHAR

Character string with a fixed length. In DLI, the STRING type is used.

+

CHAR

String with a fixed length. In DLI, the STRING type is used.

VARCHAR

VARCHAR is declared with a length that indicates the maximum number of characters in a string. During conversion from STRING to VARCHAR, if the number of characters in STRING exceeds the specified length, the excess characters of STRING are automatically trimmed. Similar to STRING, the spaces at the end of VARCHAR are meaningful and affect the comparison result. In DLI, the STRING type is used.

diff --git a/docs/dli/sqlreference/dli_08_0064.html b/docs/dli/sqlreference/dli_08_0064.html index c1426d18..c2ee41b8 100644 --- a/docs/dli/sqlreference/dli_08_0064.html +++ b/docs/dli/sqlreference/dli_08_0064.html @@ -4,15 +4,17 @@
diff --git a/docs/dli/sqlreference/dli_08_0065.html b/docs/dli/sqlreference/dli_08_0065.html index 66f7001f..ca0c5dc8 100644 --- a/docs/dli/sqlreference/dli_08_0065.html +++ b/docs/dli/sqlreference/dli_08_0065.html @@ -1,300 +1,315 @@ -

Mathematical Functions

-

Table 1 lists the mathematical functions supported in DLI.

+

Overview

+

Table 1 lists the mathematical functions supported by DLI.

-
Table 1 Mathematical functions

Function

+
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + + + + + + + + + + + + + + + + @@ -303,7 +318,7 @@
-
Parent topic: Built-in Functions
+
Parent topic: Mathematical Functions
diff --git a/docs/dli/sqlreference/dli_08_0066.html b/docs/dli/sqlreference/dli_08_0066.html index 9dccc808..e13fe7f3 100644 --- a/docs/dli/sqlreference/dli_08_0066.html +++ b/docs/dli/sqlreference/dli_08_0066.html @@ -1,198 +1,261 @@ -

Date Functions

-

Table 1 lists the date functions supported in DLI.

+

Overview

+

Table 1 lists the date functions supported by DLI.

-
Table 1 Mathematical functions

Syntax

Return Type

+

Value Type

Description

+

Description

round(DOUBLE a)

+

abs(DOUBLE a)

DOUBLE

+

DOUBLE or INT

Round a.

+

Returns the absolute value.

round(DOUBLE a, INT d)

+

acos(DOUBLE a)

DOUBLE

+

DOUBLE

Round a to d decimal places. Example: round(21.263,2) = 21.26.

+

Returns the arc cosine value of a.

bround(DOUBLE a)

+

asin(DOUBLE a)

DOUBLE

+

DOUBLE

Round off a figure using the HALF_EVEN rounding mode.

-

If the figure to be rounded off ends in 5, the HALF_EVEN rounding mode is as follows:

-
  • Round up if the digit in the place preceding 5 is odd.
  • Round down if the digit in the place preceding 5 is even.
-

Example: bround(7.5) = 8.0, bround(6.5) = 6.0.

+

Returns the arc sine value of a.

bround(DOUBLE a, INT d)

+

atan(DOUBLE a)

DOUBLE

+

DOUBLE

Retain d decimal places and round the d+1 decimal place using the HALF_EVEN rounding mode.

-

If the figure to be rounded off ends in 5, it will be rounded off as follows:

-
  • Round up if the d decimal digit is odd.
  • Round down if the d decimal digit is even.
-

Example: bround(8.25, 1) = 8.2, bround(8.35, 1) = 8.4.

+

Returns the arc tangent value of a.

floor(DOUBLE a)

+

bin(BIGINT a)

BIGINT

+

STRING

Return the largest integer that is less than or equal to a. Example: floor(21.2) = 21.

+

Returns a number in binary format.

ceil(DOUBLE a), ceiling(DOUBLE a)

+

bround(DOUBLE a)

BIGINT

+

DOUBLE

Return the smallest integer that is greater than or equal to a. Example: ceil(21.2) = 22.

+

In HALF_EVEN rounding, the digit 5 is rounded up if the digit before 5 is an odd number and rounded down if the digit before 5 is an even number. For example, bround(7.5) = 8.0, bround(6.5) = 6.0.

rand(), rand(INT seed)

+

bround(DOUBLE a, INT d)

DOUBLE

+

DOUBLE

Return a random number that is distributed uniformly from 0 through 1 (1 is exclusive). If the seed is specified, a stable random number sequence is displayed.

+

The value is rounded off to d decimal places in HALF_EVEN mode. The digit 5 is rounded up if the digit before 5 is an odd number and rounded down if the digit before 5 is an even number. For example, bround(8.25, 1) = 8.2, bround(8.35, 1) = 8.4.

exp(DOUBLE a), exp(DECIMAL a)

+

cbrt(DOUBLE a)

DOUBLE

+

DOUBLE

Return the value of e raised to the power of a.

+

Returns the cube root of a.

ln(DOUBLE a), ln(DECIMAL a)

+

ceil(DOUBLE a)

DOUBLE

+

DECIMAL

Return the natural logarithm of the argument a.

+

Returns the smallest integer that is greater than or equal to a. For example, ceil(21.2) = 22.

log10(DOUBLE a), log10(DECIMAL a)

+

conv(BIGINT num, INT from_base, INT to_base), conv(STRING num, INT from_base, INT to_base)

DOUBLE

+

STRING

Return the base 10 logarithm of the argument a.

+

Converts a number from from_base to to_base. For example, convert 5 from decimal to quaternary using conv(5,10,4) = 11.

log2(DOUBLE a), log2(DECIMAL a)

+

cos(DOUBLE a)

DOUBLE

+

DOUBLE

Return the base 2 logarithm of the argument a.

+

Returns the cosine value of a.

log(DOUBLE base, DOUBLE a)

-

log(DECIMAL base, DECIMAL a)

+

cot1(DOUBLE a)

DOUBLE

+

DOUBLE or DECIMAL

Return the base base logarithm of the argument a.

+

Returns the cotangent of a specified radian value.

pow(DOUBLE a, DOUBLE p), power(DOUBLE a, DOUBLE p)

+

degrees(DOUBLE a)

DOUBLE

+

DOUBLE

Return the value of a raised to the power of p.

+

Returns the angle corresponding to the radian.

sqrt(DOUBLE a), sqrt(DECIMAL a)

+

e()

DOUBLE

+

DOUBLE

Return the square root of a.

+

Returns the value of e.

bin(BIGINT a)

+

exp(DOUBLE a)

STRING

+

DOUBLE

Return a number in binary format.

+

Returns the value of e raised to the power of a.

hex(BIGINT a) hex(STRING a)

+

factorial(INT a)

STRING

+

BIGINT

Convert an integer or character to its hexadecimal representation.

+

Returns the factorial of a.

conv(BIGINT num, INT from_base, INT to_base), conv(STRING num, INT from_base, INT to_base)

+

floor(DOUBLE a)

STRING

+

BIGINT

Convert a number from from_base to to_base. Example: Convert 5 from decimal to quaternary using conv(5,10,4) = 11.

+

Returns the largest integer that is less than or equal to A. For example, floor(21.2) = 21.

abs(DOUBLE a)

+

greatest(T v1, T v2, ...)

DOUBLE

+

DOUBLE

Return the absolute value.

+

Returns the greatest value of a list of values.

pmod(INT a, INT b), pmod(DOUBLE a, DOUBLE b)

+

hex(BIGINT a) hex(STRING a)

INT or DOUBLE

+

STRING

Return the positive value of the remainder after division of a by b.

+

Converts an integer or character into its hexadecimal representation.

sin(DOUBLE a), sin(DECIMAL a)

+

least(T v1, T v2, ...)

DOUBLE

+

DOUBLE

Return the sine value of a.

+

Returns the least value of a list of values.

asin(DOUBLE a), asin(DECIMAL a)

+

ln(DOUBLE a)

DOUBLE

+

DOUBLE

Return the arc sine value of a.

+

Returns the natural logarithm of a given value.

cos(DOUBLE a), cos(DECIMAL a)

+

log(DOUBLE base, DOUBLE a)

DOUBLE

+

DOUBLE

Return the cosine value of a.

+

Returns the natural logarithm of a given base and exponent.

acos(DOUBLE a), acos(DECIMAL a)

+

log10(DOUBLE a)

DOUBLE

+

DOUBLE

Return the arc cosine value of a.

+

Returns the base-10 logarithm of a given value.

tan(DOUBLE a), tan(DECIMAL a)

+

log2(DOUBLE a)

DOUBLE

+

DOUBLE

Return the tangent value of a.

+

Returns the base-2 logarithm of a given value.

atan(DOUBLE a), atan(DECIMAL a)

+

median(colname)

DOUBLE

+

DOUBLE or DECIMAL

Return the arc tangent value of a.

+

Returns the median.

degrees(DOUBLE a), degrees(DECIMAL a)

+

negative(INT a)

DOUBLE

+

DECIMAL or INT

Convert the value of a from radians to degrees.

+

Returns the opposite number of a. For example, if negative(2) is given, –2 is returned.

radians(DOUBLE a), radians(DECIMAL a)

+

percentile(colname,DOUBLE p)

DOUBLE

+

DOUBLE or ARRAY

Convert the value of a from degrees to radians.

+

Returns the exact percentile, which is applicable to a small amount of data. Sorts a specified column in ascending order, and then obtains the exact pth percentage. The value of p must be between 0 and 1.

positive(INT a), positive(DOUBLE a)

+

percentile_approx (colname,DOUBLE p)

INT or DOUBLE

+

DOUBLE or ARRAY

Return a. Example: positive(2) = 2.

+

Returns the approximate percentile, which is applicable to a large amount of data. Sorts a specified column in ascending order, and then obtains the value corresponding to the pth percentile.

negative(INT a), negative(DOUBLE a)

+

pi()

INT or DOUBLE

+

DOUBLE

Return –a. Example: negative(2) = –2.

+

Returns the value of pi.

sign(DOUBLE a), sign(DECIMAL a)

+

pmod(INT a, INT b)

DOUBLE or INT

+

DECIMAL or INT

Return the sign of a. 1.0 is returned if a is positive. –1.0 is returned if a is negative. Otherwise, 0.0 is returned.

+

Returns the positive value of the remainder after division of x by y.

e()

+

positive(INT a)

DOUBLE

+

DECIMAL, DOUBLE, or INT

Return the value of e.

+

Returns the value of a, for example, positive(2) = 2.

pi()

+

pow(DOUBLE a, DOUBLE p), power(DOUBLE a, DOUBLE p)

DOUBLE

+

DOUBLE

Return the value of pi.

+

Returns the value of a raised to the power of p.

factorial(INT a)

+

radians(DOUBLE a)

BIGINT

+

DOUBLE

Return the factorial of a.

+

Returns the radian corresponding to the angle.

cbrt(DOUBLE a)

+

rand(INT seed)

DOUBLE

+

DOUBLE

Return the cube root of a.

+

Returns an evenly distributed random number that is greater than or equal to 0 and less than 1. If the seed is specified, a stable random number sequence is displayed.

shiftleft(TINYINT|SMALLINT|INT a, INT b)

-

shiftleft(BIGINT a, INT b)

+

round(DOUBLE a)

INT

-

BIGINT

+

DOUBLE

Bitwise signed left shift. Interpret a as a binary number and shift the binary number b positions to the left.

+

Round off

shiftright(TINYINT|SMALLINT|INT a, INT b)

-

shiftright(BIGINT a, INT b)

+

round(DOUBLE a, INT d)

INT

-

BIGINT

+

DOUBLE

Bitwise signed right shift. Interpret a as a binary number and shift the binary number b positions to the right.

+

Rounds a to d decimal places, for example, round(21.263,2) = 21.26.

shiftrightunsigned(TINYINT|SMALLINT|INT a, INT b),

-

shiftrightunsigned(BIGINT a, INT b)

+

shiftleft(BIGINT a, INT b)

INT

-

BIGINT

+

INT

Bitwise unsigned right shift. Interpret a as a binary number and shift the binary number b positions to the right.

+

Bitwise signed left shift. Interprets a as a binary number and shifts the binary number b positions to the left.

greatest(T v1, T v2, ...)

+

shiftright(BIGINT a, INT b)

T

+

INT

Return the maximum value of a list of values.

+

Bitwise signed right shift. Interprets a as a binary number and shifts the binary number b positions to the right.

least(T v1, T v2, ...)

+

shiftrightunsigned(BIGINT a, INT b)

T

+

INT

Return the minimum value of a list of values.

+

Bitwise unsigned right shift. Interprets a as a binary number and shifts the binary number b positions to the right.

+

sign(DOUBLE a)

+

DOUBLE

+

Returns the sign of a. 1.0 is returned if a is positive. –1.0 is returned if a is negative. Otherwise, 0.0 is returned.

+

sin(DOUBLE a)

+

DOUBLE

+

Returns the sine value of the given angle a.

+

sqrt(DOUBLE a)

+

DOUBLE

+

Returns the square root of a.

+

tan(DOUBLE a)

+

DOUBLE

+

Returns the tangent value of the given angle a.
Table 1 Date/time functions

Function

+
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + @@ -201,7 +264,7 @@
-
Parent topic: Built-in Functions
+
Parent topic: Date Functions
diff --git a/docs/dli/sqlreference/dli_08_0067.html b/docs/dli/sqlreference/dli_08_0067.html index 8199d1bb..d78376c1 100644 --- a/docs/dli/sqlreference/dli_08_0067.html +++ b/docs/dli/sqlreference/dli_08_0067.html @@ -1,226 +1,291 @@ -

String Functions

-

Table 1 lists the string functions supported by DLI.

+

Overview

+

Table 1 lists the string functions supported by DLI.

-
Table 1 Date/time functions

Syntax

Return Type

+

Value Type

Description

+

Description

from_unixtime(bigint unixtime[, string format])

+

add_months(string start_date, int num_months)

STRING

+

STRING

Convert a timestamp to the time format "yyyy-MM-dd HH:mm:ss" or "yyyyMMddHHmmss.uuuuuu".

-

For example, select FROM_UNIXTIME(1608135036,'yyyy-MM-dd HH:mm:ss').

+

Returns the date that is num_months after start_date.

unix_timestamp()

+

current_date()

BIGINT

+

DATE

Return a Unix timestamp (the number of seconds that have elapsed since 1970-01-01 00:00:00) represented by an unsigned integer when the function is called without arguments.

+

Returns the current date, for example, 2016-07-04.

unix_timestamp(string date)

+

current_timestamp()

BIGINT

+

TIMESTAMP

Return the number of seconds between a specified date and 1970-01-01 00:00:00.

+

Returns the current time, for example, 2016-07-04 11:18:11.685.

unix_timestamp(string date, string pattern)

+

date_add(string startdate, int days)

BIGINT

+

STRING or DATE

Convert a time string with a given pattern to a Unix timestamp. Example: unix_timestamp("2009-03-20", "yyyy-MM-dd") = 1237532400.

+

Adds a number of days to a date.

to_date(string timestamp)

+

dateadd(string date, bigint delta, string datepart)

STRING

+

STRING or DATE

Return the date part of a time string. Example: to_date("1970-01-01 00:00:00") = "1970-01-01".

+

Changes a date based on datepart and delta.

+

date: This parameter is mandatory. Date value, which is of the STRING type.

+

The time format is yyyy-mm-dd hh:mi:ss, for example, 2021-08-28 00:00:00.

+

delta: This parameter is mandatory. Adjustment amplitude, which is of the BIGINT type.

+

datepart: Adjustment unit, which is a constant of the STRING type. This parameter is mandatory.

year(string date)

+

date_sub(string startdate, int days)

INT

+

STRING

Return the year part of a date.

+

Subtracts a number of days from a date.

quarter(string date/timestamp/string)

+

date_format(string date, string format)

INT

+

STRING

Return the quarter of the year for a date, timestamp, or string. Example: quarter('2015-04-01')=2.

+

Converts a date into a string based on the format specified by format.

month(string date)

+

datediff(string date1, string date2)

INT

+

BIGINT

Return the month (from 1 to 12) part of a date.

+

Calculates the difference between date1 and date2.

day(string date) dayofmonth(string date)

+

datediff1(string date1, string date2, string datepart)

INT

+

BIGINT

Return the day part of a date.

+

Calculates the difference between date1 and date2 and returns the difference in a specified datepart.

hour(string date)

+

datepart (string date, string datepart)

INT

+

BIGINT

Return the hour (from 0 to 23) part of a date.

+

Returns the value of the field that meets a specified time unit in the date.

minute(string date)

+

datetrunc (string date, string datepart)

INT

+

STRING

Return the minute (from 0 to 59) part of a date.

+

Calculates the date otained through the truncation of a specified date based on a specified datepart.

+

date: The value is in the yyyy-mm-dd or yyyy-mm-dd hh:mi:ss format. This parameter is mandatory.

+

datepart: Supported date format, which is a STRING constant. This parameter is mandatory.

second(string date)

+

day(string date), dayofmonth(string date)

INT

+

INT

Return the second (from 0 to 59) part of a date.

+

Returns the date of a specified time.

weekofyear(string date)

+

from_unixtime(bigint unixtime)

INT

+

STRING

Return the week number (from 0 to 53) of a date.

+

Converts a timestamp to a time, in yyyy-MM-dd HH:mm:ss or yyyyMMddHHmmss.uuuuuu format.

+

For example, select FROM_UNIXTIME(1608135036,'yyyy-MM-dd HH:mm:ss').

datediff(string enddate, string startdate)

+

from_utc_timestamp(string timestamp, string timezone)

INT

+

TIMESTAMP

Return the number of days from startdate to enddate.

+

Converts a UTC timestamp to the corresponding timestamp in a specific time zone.

date_add(string startdate, int days)

+

getdate()

STRING

+

STRING

Add a number of days to a date.

+

Obtains the current system time.

date_sub(string startdate, int days)

+

hour(string date)

STRING

+

INT

Subtract a number of days from a date.

+

Returns the hour (from 0 to 23) of a specified time.

from_utc_timestamp(string timestamp, string timezone)

+

isdate(string date , string format)

TIMESTAMP

+

BOOLEAN

Convert a UTC timestamp to a timestamp in a given time zone. For example, from_utc_timestamp('1970-01-01 08:00:00','PST') returns 1970-01-01 00:00:00.

+

date: Date, which is implicitly converted to the STRING type and then used for calculation. This parameter is mandatory.

+

format: Unsupported date extension format, which is a STRING constant. This parameter is mandatory. If there are redundant format strings in format, only the date value corresponding to the first format string is used. Other format strings are used as separators. For example, isdate("1234-yyyy", "yyyy-yyyy") returns True.

to_utc_timestamp(string timestamp, string timezone)

+

last_day(string date)

TIMESTAMP

+

DATE

Convert a timestamp in a given time zone to a UTC timestamp. For example, to_utc_timestamp('1970-01-01 00:00:00','PST') returns 1970-01-01 08:00:00.

+

Returns the last day of the month a date belongs to, in the format of yyyy-MM-dd, for example, 2015-08-31.

current_date()

+

lastday(string date)

DATE

+

STRING

Return the current date, for example, 2016-07-04.

+

Returns the last day of the month a date belongs to. The value is of the STRING type and is in the yyyy-mm-dd hh:mi:ss format.

current_timestamp()

+

minute(string date)

TIMESTAMP

+

INT

Return the current time, for example, 2016-07-04 11:18:11.685.

+

Returns the minute (from 0 to 59) of a specified time.

add_months(string start_date, int num_months)

+

month(string date)

STRING

+

INT

Return the date that is num_months after start_date.

+

Returns the month (from January to December) of a specified time.

last_day(string date)

+

months_between(string date1, string date2)

STRING

+

DOUBLE

Return the last day of the month to which a date belongs. The returned date is in the format of yyyy-MM-dd, for example, 2015-08-31.

+

Returns the month difference between date1 and date2.

next_day(string start_date, string day_of_week)

+

next_day(string start_date, string day_of_week)

STRING

+

DATE

Return the first date that is later than start_date and nearest to day_of_week. The returned date in the format of yyyy-MM-dd. day_of_week specifies a day of a week. For example, the value of day_of_week can be Monday or FRIDAY.

+

Returns the date closest to day_of_week after start_date, in the yyyy-MM-dd format. day_of_week indicates a day in a week, for example, Monday or Friday.

trunc(string date, string format)

+

quarter(string date)

STRING

+

INT

Reset the date in a specified format. Supported formats are MONTH/MON/MM and YEAR/YYYY/YY. Example: trunc('2015-03-17', 'MM') = 2015-03-01.

+

Returns the quarter of the date, timestamp, or string, for example, quarter('2015-04-01')=2.

months_between(string date1, string date2)

+

second(string date)

DOUBLE

+

INT

Return number of months between dates date1 and date2.

+

Returns the second (from 0 to 59) of a specified time.

date_format(date/timestamp/string ts, string fmt)

+

to_char(string date, string format)

STRING

+

STRING

Return the formatted value of date/timestamp/string. The Java SimpleDateFormat format is supported. Example: date_format('2015-04-08', 'y') = '2015'.

-

In the format, y indicates the year. Y indicates the year when the current week is located. A week starts from Sunday and ends on Saturday. If a week crosses years, this week is counted as the next year.

+

Converts a date into a string in a specified format.

+

to_date(string timestamp)

+

DATE

+

Returns the date part of a time string, for example, to_date("1970-01-01 00:00:00") = "1970-01-01".

+

to_date1(string date, string format)

+

STRING

+

The value is of the STRING type, in the yyyy-mm-dd hh:mi:ss format. If the value of date or format is NULL, NULL is returned.

+

Converts a string in a specified format to a date value.

+

to_utc_timestamp(string timestamp, string timezone)

+

TIMESTAMP

+

Converts a timestamp in a given time zone to a UTC timestamp.

+

trunc(string date, string format)

+

DTAE

+

Resets the date in a specified format. Supported formats are MONTH/MON/MM and YEAR/YYYY/YY, for example, trunc('2015-03-17', 'MM') = 2015-03-01.

+

unix_timestamp(string timestamp, string pattern)

+

BIGINT

+

Returns a Unix timestamp (the number of seconds since 1970-01-01 00:00:00) as an unsigned integer if the function is called without parameters.

+

weekday (string date)

+

INT

+

Returns the day of the current week.

+

weekofyear(string date)

+

INT

+

Returns the week number (from 0 to 53) of a specified date.

+

year(string date)

+

INT

+

Returns the year of a specified date.
Table 1 String functions

Function

+
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + @@ -229,7 +294,7 @@
-
Parent topic: Built-in Functions
+
Parent topic: String Functions
diff --git a/docs/dli/sqlreference/dli_08_0068.html b/docs/dli/sqlreference/dli_08_0068.html index 55c28034..a784f770 100644 --- a/docs/dli/sqlreference/dli_08_0068.html +++ b/docs/dli/sqlreference/dli_08_0068.html @@ -1,123 +1,121 @@ -

Aggregate Functions

-

An aggregate function performs a calculation operation on a set of input values and returns a value. For example, the COUNT function counts the number of rows retrieved by an SQL statement. Table 1 lists aggregate functions.

+

Overview

+

Table 1 lists the aggregate functions supported by DLI.

-
Table 1 String functions

Syntax

Return Type

+

Value Type

Description

+

Description

ascii(string str)

+

ascii(string <str>)

INT

+

BIGINT

Returns the numeric value of the first character in a string.

+

Returns the numeric value of the first character in a string.

concat(string A, string B...)

+

concat(array<T> <a>, array<T> <b>[,...]), concat(string <str1>, string <str2>[,...])

STRING

+

ARRAY or STRING

Return a string resulting from concatenating the input strings. This function can take any number of input strings.

+

Returns a string concatenated from multiple input strings. This function can take any number of input strings.

concat_ws(string SEP, string A, string B...)

+

concat_ws(string <separator>, string <str1>, string <str2>[,...]), concat_ws(string <separator>, array<string> <a>)

STRING

+

ARRAY or STRUCT

Return a string resulting from concatenating the input strings, which are separated by specified separators.

+

Returns a string concatenated from multiple input strings that are separated by specified separators.

encode(string src, string charset)

+

char_matchcount(string <str1>, string <str2>)

BINARY

+

BIGINT

Encode src in the encoding mode specified by charset.

+

Returns the number of characters in str1 that appear in str2.

find_in_set(string str, string strList)

+

encode(string <str>, string <charset>)

INT

+

BINARY

Return the position of the first occurrence of str in strList. If the value of any parameter is NULL, NULL is returned. If the first parameter contains a comma (,), 0 is returned.

+

Returns strs encoded in charset format.

get_json_object(string json_string, string path)

+

find_in_set(string <str1>, string <str2>)

STRING

+

BIGINT

Parse the JSON object in a specified JSON path. The function will return NULL if the JSON object is invalid.

+

Returns the position (stating from 1) of str1 in str2 separated by commas (,).

instr(string str, string substr)

+

get_json_object(string <json>, string <path>)

INT

+

STRING

Return the position of the first occurrence of substr in str. Return NULL if NULL is contained in the parameters and return 0 if substr does not exist in str. Note that the subscripts start from 1.

+

Parses the JSON object in a specified JSON path. The function will return NULL if the JSON object is invalid.

length(string A)

+

instr(string <str>, string <substr>)

INT

+

INT

Return the length of a string.

+

Returns the index of substr that appears earliest in str. Returns NULL if either of the arguments are NULL and returns 0 if substr does not exist in str. Note that the first character in str has index 1.

locate(string substr, string str[, int pos])

+

instr1(string <str1>, string <str2>[, bigint <start_position>[, bigint <nth_appearance>]])

INT

+

BIGINT

Return the position of the first occurrence of substr in str after position pos (starting from 1).

+

Returns the position of str2 in str1.

lower(string A) lcase(string A)

+

initcap(string A)

STRING

+

STRING

Convert all characters of a string to lower case.

+

Converts the first letter of each word of a string to upper case and all other letters to lower case.

lpad(string str, int len, string pad)

+

keyvalue(string <str>,[string <split1>,string <split2>,] string <key>)

STRING

+

STRING

Return a string of a specified length. If the length of the given string (str) is shorter than the specified length (len), the given string is left-padded with pad to the specified length.

+

Splits str by split1, converts each group into a key-value pair by split2, and returns the value corresponding to the key.

ltrim(string A)

+

length(string <str>)

STRING

+

BIGINT

Trim spaces from the left hand side of a string.

+

Returns the length of a string.

parse_url(string urlString, string partToExtract [, string keyToExtract])

+

lengthb(string <str>)

STRING

+

STRING

Return the specified part of the specified URL. Valid values of partToExtract include HOST, PATH, QUERY, REF, PROTOCOL, AUTHORITY, FILE, and USERINFO.

-

For example, parse_url ('http://facebook.com/path1/p.php?k1=v1&k2=v2#Ref1 ',' HOST ') returns 'facebook.com'.

-

When the second parameter is QUERY, the third parameter can be used to extract the value of a specific parameter. For example, parse_url('http://facebook.com/path1/p.php?k1=v1&k2=v2#Ref1', 'QUERY', 'k1') returns 'v1'.

+

Returns the length of a specified string in bytes.

printf(String format, Obj... args)

+

levenshtein(string A, string B)

STRING

+

INT

Print the input according to a specified format.

+

Returns the Levenshtein distance between two strings, for example, levenshtein('kitten','sitting') = 3.

regexp_extract(string subject, string pattern, int index)

+

locate(string <substr>, string <str>[, bigint <start_pos>])

STRING

+

BIGINT

Extract the string specified by the regular expression. regexp_extract ('foothebar ',' foo (.*?) (bar) '2) returns 'bar.'

+

Returns the position of substr in str.

regexp_replace(string A, string B, string C)

+

lower(string A) , lcase(string A)

STRING

+

STRING

Replace character B in string A with character C.

+

Converts all characters of a string to the lower case.

repeat(string str, int n)

+

lpad(string <str1>, int <length>, string <str2>)

STRING

+

STRING

Repeat a string N times.

+

Returns a string of a specified length. If the length of the given string (str1) is shorter than the specified length (length), the given string is left-padded with str2 to the specified length.

reverse(string A)

+

ltrim([<trimChars>,] string <str>)

STRING

+

STRING

Return the reversed string.

+

Trims spaces from the left hand side of a string.

rpad(string str, int len, string pad)

+

parse_url(string urlString, string partToExtract [, string keyToExtract])

STRING

+

STRING

Return a string of a specified length. If the length of the given string (str) is shorter than the specified length (len), the given string is right-padded with pad to the specified length.

+

Returns the specified part of a given URL. Valid values of partToExtract include HOST, PATH, QUERY, REF, PROTOCOL, AUTHORITY, FILE, and USERINFO.

+

For example, parse_url('http://facebook.com/path1/p.php?k1=v1&k2=v2#Ref1', 'HOST') returns 'facebook.com'.

+

When the second parameter is set to QUERY, the third parameter can be used to extract the value of a specific parameter. For example, parse_url('http://facebook.com/path1/p.php?k1=v1&k2=v2#Ref1', 'QUERY', 'k1') returns 'v1'.

rtrim(string A)

+

printf(String format, Obj... args)

STRING

+

STRING

Trim spaces from the right hand side of a string.

+

Prints the input in a specific format.

space(int n)

+

regexp_count(string <source>, string <pattern>[, bigint <start_position>])

STRING

+

BIGINT

Returns a specified number of spaces.

+

Returns the number of substrings that match a specified pattern in the source, starting from the start_position position.

substr(string A, int start) substring(string A, int start)

+

regexp_extract(string <source>, string <pattern>[, bigint <groupid>])

STRING

+

STRING

Return the substring starting from the specified start position in string A till the end of the string.

+

Matches the string source based on the pattern grouping rule and returns the string content that matches groupid.

substr(string A, int start, int len) substring(string A, int start, int len)

+

replace(string <str>, string <old>, string <new>)

STRING

+

STRING

Return the substring of a specified length starting from the specified start position in A string.

+

Replaces the substring that matches a specified string in a string with another string.

substring_index(string A, string delim, int count)

+
  • For Spark 2.4.5: regexp_replace(string <source>, string <pattern>, string <replace_string>)
  • For Spark 3.3.1: regexp_replace(string <source>, string <pattern>, string <replace_string>[, bigint <occurrence>])

STRING

+

STRING

Return the substring from string A before count occurrences of the delimiter delim.

+
  • For Spark 2.4.5: Replaces the substring that matches the pattern for the occurrence time in the source string and the substring that matches the pattern later with the specified string replace_string and returns the result string.
  • For Spark 3.3.1: Replaces the substring that matches the pattern for the occurrence time in the source string and the substring that matches the pattern later with the specified string replace_string and returns the result string.

translate(string|char|varchar input, string|char|varchar from, string|char|varchar to)

+

regexp_replace1(string <source>, string <pattern>, string <replace_string>[, bigint <occurrence>])

STRING

+

STRING

Translate the input string by replacing the characters or string specified by from with the characters or string specified by to. For example, replace bcd in abcde with BCD using translate ("abcde", "bcd", "BCD").

+

Replaces the substring that matches pattern for the occurrence time in the source string with the specified string replace_string and returns the result string.

trim(string A)

+

regexp_instr(string <source>, string <pattern>[,bigint <start_position>[, bigint <occurrence>[, bigint <return_option>]]])

STRING

+

BIGINT

Trim spaces from both ends of a string.

+

Returns the start or end position of the substring that matches a specified pattern for the occurrence time, starting from start_position in the source string.

upper(string A) ucase(string A)

+

regexp_substr(string <source>, string <pattern>[, bigint <start_position>[, bigint <occurrence>]])

STRING

+

STRING

Convert all characters of a string to upper case.

+

Returns the substring that matches a specified pattern for the occurrence time, starting from start_position in the source string.

initcap(string A)

+

repeat(string <str>, bigint <n>)

STRING

+

STRING

Convert the first letter of each word of a string to upper case and all other letters to lower case.

+

Repeats a string for N times.

levenshtein(string A, string B)

+

reverse(string <str>)

INT

+

STRING

Return the Levenshtein distance between two strings. Example: levenshtein ('kitten ',' sitting ') = 3.

+

Returns a string in reverse order.

soundex(string A)

+

rpad(string <str1>, int <length>, string <str2>)

STRING

+

STRING

Return the soundex string from str. Example: soundex ('Miller ') = M460.

+

Right-pads str1 with str2 to the specified length.

+

rtrim([<trimChars>, ]string <str>),

+

rtrim(trailing [<trimChars>] from <str>)

+

STRING

+

Trims spaces from the right hand side of a string.

+

soundex(string <str>)

+

STRING

+

Returns the soundex string from str, for example, soundex('Miller') = M460.

+

space(bigint <n>)

+

STRING

+

Returns a specified number of spaces.

+

substr(string <str>, bigint <start_position>[, bigint <length>]), substring(string <str>, bigint <start_position>[, bigint <length>])

+

STRING

+

Returns the substring of str, starting from start_position and with a length of length.

+

substring_index(string <str>, string <separator>, int <count>)

+

STRING

+

Truncates the string before the count separator of str. If the value of count is positive, the string is truncated from the left. If the value of count is negative, the string is truncated from the right.

+

split_part(string <str>, string <separator>, bigint <start>[, bigint <end>])

+

STRING

+

Splits a specified string based on a specified separator and returns a substring from the start to end position.

+

translate(string|char|varchar input, string|char|varchar from, string|char|varchar to)

+

STRING

+

Translates the input string by replacing the characters or string specified by from with the characters or string specified by to. For example, replaces bcd in abcde with BCD using translate("abcde", "bcd", "BCD").

+

trim([<trimChars>,]string <str>),

+

trim([BOTH] [<trimChars>] from <str>)

+

STRING

+

Trims spaces from both ends of a string.

+

upper(string A), ucase(string A)

+

STRING

+

Converts all characters of a string to the upper case.
Table 1 Aggregate functions

Function

+
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Table 1 Aggregate functions

Syntax

Return Type

+

Value Type

Description

+

Description

count(*), count(expr), count(DISTINCT expr[, expr...])

+

avg(col), avg(DISTINCT col)

BIGINT

+

DOUBLE

Return the total number of retrieved records.

+

Returns the average value.

sum(col), sum(DISTINCT col)

+

corr(col1, col2)

DOUBLE

+

DOUBLE

Return the sum of the values in a column.

+

Returns the coefficient of correlation of a pair of numeric columns.

avg(col), avg(DISTINCT col)

+

count([distinct|all] <colname>)

DOUBLE

+

BIGINT

Return the average of the values in a column.

+

Returns the number of records.

min(col)

+

covar_pop(col1, col2)

DOUBLE

+

DOUBLE

Return the minimum value of a column.

+

Returns the covariance of a pair of numeric columns.

max(col)

+

covar_samp(col1, col2)

DOUBLE

+

DOUBLE

Return the maximum value of a column.

+

Returns the sample covariance of a pair of numeric columns.

variance(col), var_pop(col)

+

max(col)

DOUBLE

+

DOUBLE

Return the variance of a numeric column.

+

Returns the maximum value.

var_samp(col)

+

min(col)

DOUBLE

+

DOUBLE

Return the sample variance of a numeric column.

+

Returns the minimum value.

stddev_pop(col)

+

percentile(BIGINT col, p)

DOUBLE

+

DOUBLE

Return the deviation of a numeric column.

+

Returns the percentage value point of the value area. The value of p must be between 0 and 1. Otherwise, NULL is returned. The value cannot be a float.

stddev_samp(col)

+

percentile_approx(DOUBLE col, p [, B])

DOUBLE

+

DOUBLE

Return the sample deviation of a numeric column.

+

Returns the approximate pth percentile of a numerical column within the group, including floating-point numbers. The value of p should be between 0 and 1. The parameter B controls the accuracy of the approximation, with a higher value of B resulting in a higher level of approximation. The default value is 10000. If the number of non-repeating values in the column is less than B, an exact percentile is returned.

covar_pop(col1, col2)

+

stddev_pop(col)

DOUBLE

+

DOUBLE

Return the covariance of a pair of numeric columns.

+

Returns the deviation of a specified column.

covar_samp(col1, col2)

+

stddev_samp(col)

DOUBLE

+

DOUBLE

Return the sample covariance of a pair of numeric columns.

+

Returns the sample deviation of a specified column.

corr(col1, col2)

+

sum(col), sum(DISTINCT col)

DOUBLE

+

DOUBLE

Return the coefficient of correlation of a pair of numeric columns.

+

Returns the sum of the values in a column.

percentile(BIGINT col, p)

+

variance(col), var_pop(col)

DOUBLE

+

DOUBLE

Return the exact pth percentile of a column. p must be between 0 and 1. Otherwise, this function returns null. This function does not work with floating point types.

+

Returns the variance of a column.

percentile_approx(DOUBLE col, p [, B])

+

var_samp(col)

DOUBLE

+

DOUBLE

Return an approximate pth percentile of a numeric column (including floating point types) in a group. p must be between 0 and 1. B controls approximation accuracy. Higher values of B mean better approximations, and the default value is 10,000. When the number of distinct values in the numeric column is smaller than B, an exact percentile value is returned.

+

Returns the sample variance of a specified column.
-

Functions such as var_pop, stddev_pop, var_samp, stddev_samp, covar_pop, covar_samp, corr, and percentile_approx, do not support non-numeral data types, such as TimeStamp.

-
-
Parent topic: Built-in Functions
+
Parent topic: Aggregate Functions
diff --git a/docs/dli/sqlreference/dli_08_0069.html b/docs/dli/sqlreference/dli_08_0069.html index f90a555e..3071badf 100644 --- a/docs/dli/sqlreference/dli_08_0069.html +++ b/docs/dli/sqlreference/dli_08_0069.html @@ -1,70 +1,70 @@ -

Window Functions

-

A window function performs a calculation operation on a set of values related to the current value. A window function can be an aggregate function used in the GROUP BY clause, such as sum, max, min, count, and avg functions. The window functions also include the functions listed in Table 1. A window contains multiple rows defined by an OVER clause. A window function works on one window.

+

Overview

+

Table 1 lists the window functions supported by DLI.

-
Table 1 Functions

Function

+
- - - - - - - - - - - - - - - - - - - - - - - - - - @@ -73,7 +73,7 @@
-
Parent topic: Built-in Functions
+
Parent topic: Window Functions
diff --git a/docs/dli/sqlreference/dli_08_0071.html b/docs/dli/sqlreference/dli_08_0071.html index 827c5786..a3e6156e 100644 --- a/docs/dli/sqlreference/dli_08_0071.html +++ b/docs/dli/sqlreference/dli_08_0071.html @@ -12,11 +12,11 @@ -

Keyword

  • IF NOT EXISTS: Prevents system errors if the database to be created exists.
  • COMMENT: Describes a database.
+

Keywords

  • IF NOT EXISTS: Prevents system errors if the database to be created exists.
  • COMMENT: Describes a database.
  • DBPROPERTIES: Specifies database attributes. The attribute name and attribute value appear in pairs.

Parameters

-
Table 1 Window functions

Syntax

Return Type

+

Value Type

Description

+

Description

first_value(col)

+

cume_dist()

Data type of the argument.

+

DOUBLE

Return the value of the first data record from a column.

+

Returns the cumulative distribution, which is equivalent to calculating the proportion of data in the partition that is greater than or equal to, or less than or equal to, the current row.

last_value(col)

+

first_value(col)

Data type of the argument.

+

Data type of the argument

Return the value of the last data record from a column.

+

Returns the value of the first data record in a column in a result set.

lag (col,n,DEFAULT)

+

last_value(col)

Data type of the argument.

+

Data type of the argument

Return the value from the nth row preceding the current row. The first argument specifies the column name. The second argument specifies the nth row preceding the current row. The configuration of the second argument is optional, and the default argument value is 1 if the argument is not specified. The third argument is set to a default value. If the nth row preceding the current row is null, the default value is used. The default value of the third argument is NULL if the argument is not specified.

+

Returns the value of the last data record from a column.

lead (col,n,DEFAULT)

+

lag (col,n,DEFAULT)

Data type of the argument.

+

Data type of the argument

Return the value from the nth row following the current row. The first argument specifies the column name. The second argument specifies the nth row following the current row. The configuration of the second argument is optional, and the default argument value is 1 if the argument is not specified. The third argument is set to a default value. If the nth row following the current row is null, the default value is used. The default value of the third argument is NULL if the argument is not specified.

+

Returns the value from the nth row preceding the current row. The first argument specifies the column name. The second argument specifies the nth row preceding the current row. The configuration of the second argument is optional, and the default argument value is 1 if the argument is not specified. The third argument is set to a default value. If the nth row preceding the current row is null, the default value is used. The default value of the third argument is NULL if the argument is not specified.

row_number() over (order by col_1[,col_2 ...])

+

lead (col,n,DEFAULT)

INT

+

Data type of the argument

Assign a unique number to each row.

+

Returns the value from the nth row following the current row. The first argument specifies the column name. The second argument specifies the nth row following the current row. The configuration of the second argument is optional, and the default argument value is 1 if the argument is not specified. The third argument is set to a default value. If the nth row following the current row is null, the default value is used. The default value of the third argument is NULL if the argument is not specified.

rank()

+

percent_rank()

INT

+

DOUBLE

Return the rank of a value in a set of values. When multiple values share the same rank, the next rank in the sequence is not consecutive.

+

Returns the rank of a value from the column specified by the ORDER BY clause of the window. The return value is a decimal between 0 and 1, which is calculated using (RANK - 1)/(- 1).

cume_dist()

+

rank()

DOUBLE

+

INT

Calculate the relative position of a value in a row.

+

Returns the rank of a value in a set of values. When multiple values share the same rank, the next rank in the sequence is not consecutive.

percent_rank()

+

row_number() over (order by col_1[,col_2 ...])

DOUBLE

+

INT

Return the rank of a value from the column specified by the ORDER BY clause of the window. The return value is a decimal between 0 and 1, which is calculated using (RANK - 1)/(- 1).

+

Assigns a unique number to each row.
Table 1 Parameter description

Parameter

+
diff --git a/docs/dli/sqlreference/dli_08_0072.html b/docs/dli/sqlreference/dli_08_0072.html index 8d7c3d1d..39d339a1 100644 --- a/docs/dli/sqlreference/dli_08_0072.html +++ b/docs/dli/sqlreference/dli_08_0072.html @@ -8,12 +8,12 @@ -

Keyword

IF EXISTS: Prevents system errors if the database to be deleted does not exist.

+

Keywords

IF EXISTS: Prevents system errors if the database to be deleted does not exist.

Precautions

  • DATABASE and SCHEMA can be used interchangeably. You are advised to use DATABASE.
  • RESTRICT: If the database is not empty (tables exist), an error is reported and the DROP operation fails. RESTRICT is the default logic.
  • CASCADE: Even if the database is not empty (tables exist), the DROP will delete all the tables in the database. Therefore, exercise caution when using this function.

Parameters

-
Table 1 Parameters

Parameter

Description
Table 1 Parameter description

Parameter

+
diff --git a/docs/dli/sqlreference/dli_08_0073.html b/docs/dli/sqlreference/dli_08_0073.html index 0f6c10d6..f588b2de 100644 --- a/docs/dli/sqlreference/dli_08_0073.html +++ b/docs/dli/sqlreference/dli_08_0073.html @@ -8,10 +8,10 @@ -

Keyword

EXTENDED: Displays the database properties.

+

Keywords

EXTENDED: Displays the database properties.

Parameters

-
Table 1 Parameter

Parameter

Description
Table 1 Parameter description

Parameter

+
diff --git a/docs/dli/sqlreference/dli_08_0074.html b/docs/dli/sqlreference/dli_08_0074.html index 23567df1..5fa60800 100644 --- a/docs/dli/sqlreference/dli_08_0074.html +++ b/docs/dli/sqlreference/dli_08_0074.html @@ -8,10 +8,10 @@ -

Keyword

None

+

Keywords

None

Parameters

-
Table 1 Parameter

Parameter

Description
Table 1 Parameter description

Parameter

+
diff --git a/docs/dli/sqlreference/dli_08_0076.html b/docs/dli/sqlreference/dli_08_0076.html index bfb5a9f8..e5cebdf7 100644 --- a/docs/dli/sqlreference/dli_08_0076.html +++ b/docs/dli/sqlreference/dli_08_0076.html @@ -3,12 +3,14 @@

Creating an OBS Table Using the DataSource Syntax

Function

Create an OBS table using the DataSource syntax.

The main differences between the DataSource and the Hive syntax lie in the supported data formats and the number of supported partitions. For details, see syntax and precautions.

+

You are advised to use the OBS parallel file system for storage. A parallel file system is a high-performance file system that provides latency in milliseconds, TB/s-level bandwidth, and millions of IOPS. It applies to interactive big data analysis scenarios.

+
-

Usage

  • The size of the table will not be calculated during table creation.
  • When data is added, the table size will be changed to 0.
  • You can view the table size on OBS.
-
-

Precautions

  • The table and column names are case-insensitive.
  • Descriptions of table names and column names support only string constants.
  • During table creation, you need to specify the column name and corresponding data type. The data type is primitive type.
  • If a folder and a file have the same name in the OBS directory, the file is preferred as the path when creating an OBS table.
  • During table creation, if the specified path is an OBS directory and it contains subdirectories (or nested subdirectories), all file types and content in the subdirectories are considered table content.

    Ensure that all file types in the specified directory and its subdirectories are consistent with the storage format specified in the table creation statement. All file content must be consistent with the fields in the table. Otherwise, errors will be reported in the query.

    -

    You can set multiLevelDirEnable to true in the OPTIONS statement to query the content in the subdirectory. The default value is false (Note that this configuration item is a table attribute, exercise caution when performing this operation). Hive tables do not support this configuration item.

    -
  • The OBS storage path must be a directory on the OBS. The directory must be created in advance and be empty.
  • When a partitioned table is created, the column specified in PARTITIONED BY must be a column in the table, and the partition type must be specified. The partition column supports only the string, boolean, tinyint, smallint, short, int, bigint, long, decimal, float, double, date, and timestamp type.
  • When a partitioned table is created, the partition field must be the last one or several fields of the table field, and the sequence of the partition fields must be the same. Otherwise, an error occurs.
  • A maximum of 7,000 partitions can be created in a single table.
  • The CREATE TABLE AS statement cannot specify table attributes or create partitioned tables.
+

Precautions

  • The size of a table is not calculated when the table is created.
  • When data is added, the table size will be changed to 0.
  • You can check the table size on OBS.
  • Table properties cannot be specified using CTAS table creation statements.
  • An OBS directory containing subdirectories:

    If you specify an OBS directory that contains subdirectories when creating a table, all file types and content within those subdirectories will also be included as table content.

    +

    Ensure that all file types in the specified directory and its subdirectories are consistent with the storage format specified in the table creation statement. All file content must be consistent with the fields in the table. Otherwise, errors will be reported in the query.

    +

    You can set multiLevelDirEnable to true in the OPTIONS statement to query the content in the subdirectory. The default value is false (Note that this configuration item is a table attribute, exercise caution when performing this operation. Hive tables do not support this configuration item.)

    +
  • Instructions on using partitioned tables:
    • When a partitioned table is created, the column specified in PARTITIONED BY must be a column in the table, and the partition type must be specified. The partition column supports only the string, boolean, tinyint, smallint, short, int, bigint, long, decimal, float, double, date, and timestamp type.
    • When a partitioned table is created, the partition field must be the last one or several fields of the table field, and the sequence of the partition fields must be the same. Otherwise, an error occurs.
    • A maximum of 200,000 partitions can be created in a single table.
    • CTAS table creation statements cannot be used to create partitioned tables.
    +

Syntax

Table 1 Parameter

Parameter

Description

 
1
 2
@@ -22,233 +24,438 @@
   [OPTIONS (path 'obs_path', key1=val1, key2=val2, ...)] 
   [PARTITIONED BY (col_name1, col_name2, ...)]
   [COMMENT table_comment]
-  [AS select_statement];
+  [AS select_statement]
-

Keyword

  • IF NOT EXISTS: Prevents system errors when the created table exists.
  • USING: Specifies the storage format.
  • OPTIONS: Specifies the attribute name and attribute value when a table is created.
  • COMMENT: Field or table description.
  • PARTITIONED BY: Partition field.
  • AS: Run the CREATE TABLE AS statement to create a table.
+

Keywords

  • IF NOT EXISTS: Prevents system errors when the created table exists.
  • USING: Storage format.
  • OPTIONS: Property name and property value when a table is created.
  • COMMENT: Field or table description.
  • PARTITIONED BY: Partition field.
  • AS: Run the CREATE TABLE AS statement to create a table.
-

Parameter

-
Table 1 Parameter description

Parameter

+

Parameters

+
- + - - + - - + - - + - - + - - + - - + - - + - - + - - + + + +
Table 1 Parameters

Parameter

Description

+

Mandatory

+

Description

db_name

+

db_name

Database name

-

The value can contain letters, numbers, and underscores (_), but cannot contain only numbers or start with a number or underscore (_).

+

No

+

Database name

+

The value can contain letters, numbers, and underscores (_), but it cannot contain only numbers or start with a number or underscore (_).

table_name

+

table_name

Name of the table to be created in the database

-

The value can contain letters, numbers, and underscores (_), but cannot contain only numbers or start with a number or underscore (_). The matching rule is ^(?!_)(?![0-9]+$)[A-Za-z0-9_$]*$.

-

Special characters must be enclosed in single quotation marks ('').

+

Yes

+

Name of the table to be created in the database

+

The value can contain letters, numbers, and underscores (_), but it cannot contain only numbers or start with a number or underscore (_). The matching rule is ^(?!_)(?![0-9]+$)[A-Za-z0-9_$]*$.

+

Special characters must be enclosed in single quotation marks ('').

+

The table name is case insensitive.

col_name

+

col_name

Column names with data types separated by commas (,)

-

The column name contains letters, digits, and underscores (_). It cannot contain only digits and must contain at least one letter.

+

Yes

+

Column names with data types separated by commas (,)

+

The column name can contain letters, numbers, and underscores (_), but it cannot contain only numbers and must contain at least one letter.

+

The column name is case insensitive.

col_type

+

col_type

Data type of a column field

+

Yes

+

Data type of a column field, which is primitive.

col_comment

+

col_comment

Column field description

+

No

+

Column field description, which can only be string constants.

file_format

+

file_format

Input format of the table. The value can be orc, parquet, json, csv, or avro.

+

Yes

+

Format of the table to be created, which can be orc, parquet, json, csv, or avro.

path

+

path

OBS storage path where data files are stored

-

Format: obs://bucketName/tblPath

-

bucketName: bucket name

-

tblPath: directory name. You do not need to specify the file name following the directory.

-

For details about attribute names and values during table creation, see Table 2.

-

For details about the table attribute names and values when file_format is set to csv, see Table 2 and Table 3.

+

Yes

+

OBS storage path where data files are stored. You are advised to use an OBS parallel file system for storage.

+

Format: obs://bucketName/tblPath

+

bucketName: bucket name

+

tblPath: directory name. You do not need to specify the file name following the directory.

+

Refer to Table 2 for details about property names and values during table creation.

+

Refer to Table 2 and Table 3 for details about the table property names and values when file_format is set to csv.

+

If there is a folder and a file with the same name in the OBS directory, the path pointed to by the OBS table will prioritize the file over the folder.

table_comment

+

table_comment

Description of the table

+

No

+

Table description, which can only be string constants.

select_statement

+

select_statement

The CREATE TABLE AS statement is used to insert the SELECT query result of the source table or a data record to a new table in OBS bucket.

+

No

+

Used in the CREATE TABLE AS statement to insert the SELECT query results of the source table or a data record to a table newly created in the OBS bucket.

+
+
+ +
+ + + + + + + + + + + + + + + + + + + + + +
Table 2 OPTIONS parameters

Parameter

+

Mandatory

+

Description

+

path

+

No

+

Path where the table is stored, which currently can only be an OBS directory

+

multiLevelDirEnable

+

No

+

Whether data in subdirectories is iteratively queried when there are nested subdirectories. When this parameter is set to true, all files in the table path, including files in subdirectories, are iteratively read when a table is queried.

+

Default value: false

+

dataDelegated

+

No

+

Whether data in the path is cleared when deleting a table or partition

+

Default value: false

+

compression

+

No

+

Compression format. This parameter is typically required for Parquet files and is set to zstd.

+
+
+
When file_format is set to csv, you can set the following OPTIONS parameters: +
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
Table 3 OPTIONS parameters of the CSV data format

Parameter

+

Mandatory

+

Description

+

delimiter

+

No

+

Data separator

+

Default value: comma (,)

+

quote

+

No

+

Quotation character

+

Default value: double quotation marks ("")

+

escape

+

No

+

Escape character

+

Default value: backslash (\)

+

multiLine

+

No

+

Whether the column data contains carriage return characters or transfer characters. The value true indicates yes and the value false indicates no.

+

Default value: false

+

dateFormat

+

No

+

Date format of the date field in a CSV file

+

Default value: yyyy-MM-dd

+

timestampFormat

+

No

+

Date format of the timestamp field in a CSV file

+

Default value:

+

yyyy-MM-dd HH:mm:ss

+

mode

+

No

+

Mode for parsing CSV files. The options are as follows: Default value: PERMISSIVE

+
  • PERMISSIVE: Permissive mode. If an incorrect field is encountered, set the line to Null.
  • DROPMALFORMED: When an incorrect field is encountered, the entire line is discarded.
  • FAILFAST: Error mode. If an error occurs, it is automatically reported.
+

header

+

No

+

Whether the CSV file contains header information. The value true indicates that the table header information is contained, and the value false indicates that the information is not included.

+

Default value: false

+

nullValue

+

No

+

Character that represents the null value. For example, nullValue="nl" indicates that nl represents the null value.

+

comment

+

No

+

Character that indicates the beginning of the comment. For example, comment= '#' indicates that the line starting with # is a comment.

+

compression

+

No

+

Data compression format. Currently, gzip, bzip2, and deflate are supported. If you do not want to compress data, enter none.

+

Default value: none

+

encoding

+

No

+

Data encoding format. Available values are utf-8, gb2312, and gbk. Value utf-8 will be used if this parameter is left empty.

+

Default value: utf-8
- -
- - - - - - - - - - - - - - - - - - - - - -
Table 2 OPTIONS parameter description

Parameter

-

Description

-

Default Value

-

path

-

Specified table storage location. Currently, only OBS is supported.

-

-

-

multiLevelDirEnable

-

Whether to iteratively query data in subdirectories when subdirectories are nested. When this parameter is set to true, all files in the table path, including files in subdirectories, are iteratively read when a table is queried.

-

false

-

dataDelegated

-

Whether to clear data in the path when deleting a table or partition

-

false

-

compression

-

Specified compression format. Generally, you need to set this parameter to zstd for parquet files.

-

-

-
-
When the file format is set to CSV, you can set the following OPTIONS parameters: -
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
Table 3 OPTIONS parameter description of the CSV data format

Parameter

-

Description

-

Default Value

-

delimiter

-

Data separator

-

Comma (,)

-

quote

-

Quotation character

-

Double quotation marks (" ")

-

escape

-

Escape character

-

Backslash (\)

-

multiLine

-

Whether the column data contains carriage return characters or transfer characters. The value true indicates yes and the value false indicates no.

-

false

-

dateFormat

-

Date format of the date field in a CSV file

-

yyyy-MM-dd

-

timestampFormat

-

Date format of the timestamp field in a CSV file

-

yyyy-MM-dd HH:mm:ss

-

mode

-

Mode for parsing CSV files. The options are as follows:

-
  • PERMISSIVE: Permissive mode. If an incorrect field is encountered, set the line to Null.
  • DROPMALFORMED: When an incorrect field is encountered, the entire line is discarded.
  • FAILFAST: Error mode. If an error occurs, it is automatically reported.
-

PERMISSIVE

-

header

-

Whether CSV contains header information. The value true indicates that the table header information is contained, and the value false indicates that the information is not included.

-

false

-

nullValue

-

Character that represents the null value. For example, nullValue= "\\N" indicates that \N represents the null value.

-

-

-

comment

-

Character that indicates the beginning of the comment. For example, comment= '#' indicates that the line starting with # is a comment.

-

-

-

compression

-

Data compression format. Currently, gzip, bzip2, and deflate are supported. If you do not want to compress data, enter none.

-

none

-

encoding

-

Data encoding format. Available values are utf-8, gb2312, and gbk. Value utf-8 will be used if this parameter is left empty.

-

utf-8

-
-
-
-

Example

  • Create a parquetTable OBS table.
    1
    CREATE TABLE parquetTable (name string, id int) USING parquet OPTIONS (path "obs://bucketName/filePath");
+
    Example 1: Creating an OBS Non-Partitioned Table
    Example description: Create an OBS non-partitioned table named table1 and use the USING keyword to set the storage format of the table to orc.
    
+
    You can store OBS tables in parquet, json, or avro format.
    
+
    1
+2
+3
+4
+5
    CREATE TABLE IF NOT EXISTS table1 (
+    col_1   STRING,
+    col_2   INT)
+USING orc
+OPTIONS (path 'obs://bucketName/filePath');
 
    
 
 
    
-
  • Create a parquetZstdTable OBS table and set the compression format to zstd.
    CREATE TABLE parquetZstdTable (name string, id string) USING parquet OPTIONS (path "obs://bucketName/filePath",compression='zstd');
    
-
  • Create a student table that has two fields name and scoreand partition the table by classNo.
    1
    CREATE TABLE IF NOT EXISTS student(name STRING, score DOUBLE, classNo INT) USING csv OPTIONS (PATH 'obs://bucketName/filePath') PARTITIONED BY (classNo);
+
    
+
    Example 2: Creating an OBS Partitioned Table
    Example description: Create a partitioned table named student. The partitioned table is partitioned using facultyNo and classNo. The student table is partitioned by faculty number (facultyNo) and class number (classNo).
    
+
    In practice, you can select a proper partitioning field and add it to the brackets following the PARTITIONED BY keyword.
    
+
    1
+2
+3
+4
+5
+6
+7
    CREATE TABLE IF NOT EXISTS student (
+    Name        STRING,
+    facultyNo   INT,
+    classNo     INT)
+USING csv
+OPTIONS (path 'obs://bucketName/filePath')
+PARTITIONED BY (facultyNo, classNo);
 
    
 
 
    
-
     
    The classNo field is a partition field and must be placed at the end of the table field, that is, student(name STRING, score DOUBLE, classNo INT).
    
-
    
-
  • To create table t1 and insert data of table t2 into table t1, run the following statement:
    1
    CREATE TABLE t1 USING parquet OPTIONS(path 'obs://bucketName/tblPath') AS select * from t2;
+
    
+
    Example 3: Using CTAS to Create an OBS Non-Partitioned Table Using All or Part of the Data in the Source Table
    Example description: Based on the OBS table table1 created in Example 1: Creating an OBS Non-Partitioned Table, use the CTAS syntax to copy data from table1 to table1_ctas.
    
+
    When using CTAS to create a table, you can ignore the syntax used to create the table being copied. This means that regardless of the syntax used to create table1, you can use the DataSource syntax to create table1_ctas.
    
+
    In addition, in this example, the storage format of table1 is orc, and the storage format of table1_ctas may be parquet. This means that the storage format of the table created by CTAS may be different from that of the original table.
    
+
    Use the SELECT statement following the AS keyword to select required data and insert the data to table1_ctas.
    
+
    The SELECT syntax is as follows: SELECT <Column name > FROM <Table name > WHERE <Related filter criteria>.
    
+
    • In this example, SELECT * FROM table1 is used. * indicates that all columns are selected from table1 and all data in table1 is inserted into table1_ctas.
      1
+2
+3
+4
+5
+6
      CREATE TABLE IF NOT EXISTS table1_ctas
+USING parquet
+OPTIONS (path 'obs:// bucketName/filePath')
+AS
+SELECT  *
+FROM    table1;
+
      
+
+
      
+
    • To filter and insert data into table1_ctas in a customized way, you can use the following SELECT statement: SELECT col_1 FROM table1 WHERE col_1 = 'Ann'. This will allow you to select only col_1 from table1 and insert data into table1_ctas where the value equals 'Ann'.
      1
+2
+3
+4
+5
+6
+7
      CREATE TABLE IF NOT EXISTS table1_ctas
+USING parquet
+OPTIONS (path 'obs:// bucketName/filePath')
+AS
+SELECT  col_1
+FROM    table1
+WHERE   col_1 = 'Ann';
 
      
 
 
      
 
    
 
    
+
    Example 4: Creating an OBS Non-Partitioned Table and Customizing the Data Type of a Column Field
    Example description: Create an OBS non-partitioned table named table2. You can customize the native data types of column fields based on service requirements.
    
+
    • STRING, CHAR, or VARCHAR can be used for text characters.
    • TIMESTAMP or DATE can be used for time characters.
    • INT, SMALLINT/SHORT, BIGINT/LONG, or TINYINT can be used for integer characters.
    • FLOAT, DOUBLE, or DECIMAL can be used for decimal calculation.
    • BOOLEAN can be used if only logical switches are involved.
    
+
    For details, see "Data Types" > "Primitive Data Types".
    
+
     1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+10
+11
+12
+13
+14
+15
+16
+17
    CREATE TABLE IF NOT EXISTS table2 (
+    col_01  STRING,
+    col_02  CHAR (2),
+    col_03  VARCHAR (32),
+    col_04  TIMESTAMP,
+    col_05  DATE,
+    col_06  INT,
+    col_07  SMALLINT,
+    col_08  BIGINT,
+    col_09  TINYINT,
+    col_10  FLOAT,
+    col_11  DOUBLE,
+    col_12  DECIMAL (10, 3),
+    col_13  BOOLEAN
+)
+USING parquet
+OPTIONS (path 'obs://bucketName/filePath');
+
    
+
+
    
+
    
+
    Example 5: Creating an OBS Partitioned Table and Customizing OPTIONS Parameters
    Example description: When creating an OBS table, you can customize property names and values. For details about OPTIONS parameters, see Table 2.
    
+
    In this example, an OBS partitioned table named table3 is created and partitioned based on col_2. Configure path, multiLevelDirEnable, dataDelegated, and compression in OPTIONS.
    
+
    • path: OBS storage path. In this example, the value is obs://bucketName/filePath, where bucketName indicates the bucket name and filePath indicates the actual directory name.
    • In big data scenarios, you are advised to use the OBS parallel file system for storage.
    • multiLevelDirEnable: In this example, set this parameter to true, indicating that all files and subdirectories in the table path are read iteratively when the table is queried. If this parameter is not required, set it to false or leave it blank (the default value is false).
    • dataDelegated: In this example, set this parameter to true, indicating that all data in the path is deleted when a table or partition is deleted. If this parameter is not required, set it to false or leave it blank (the default value is false).
    • compression: If the created OBS table needs to be compressed, you can use the keyword compression to configure the compression format. In this example, the zstd compression format is used.
    
+
     1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+10
+11
+12
    CREATE TABLE IF NOT EXISTS table3 (
+    col_1   STRING,
+    col_2   int
+)
+USING parquet
+PARTITIONED BY (col_2)
+OPTIONS (
+    path 'obs://bucketName/filePath',
+    multiLeveldirenable = true,
+    datadelegated = true,
+    compression = 'zstd'
+);
+
    
+
+
    
+
    
+
    Example 6: Creating an OBS Non-Partitioned Table and Customizing OPTIONS Parameters
    Example description: A CSV table is a file format that uses commas to separate data values in plain text. It is commonly used for storing and sharing data, but it is not ideal for complex data types due to its lack of structured data concepts. So, when file_format is set to csv, more OPTIONS parameters can be configured. For details, see Table 3.
    
+
    In this example, a non-partitioned table named table4 is created with a csv storage format, and additional OPTIONS parameters are used to constrain the data.
    
+
    • delimiter: data separator, indicating that commas (,) are used as separators between data
    • quote: quotation character, indicating that double quotation marks (") are used to quota the reference information in the data
    • escape: escape character, indicating that backslashes (\) are used as the escape character for data storage
    • multiLine: This parameter is used to set the column data to be stored does not include carriage return or newline characters.
    • dataFormat: indicates that the date format of the data field in the CSV file is yyyy-MM-dd.
    • timestamoFormat: indicates that the timestamp format in the CSV file is yyyy-MM-dd HH:mm:ss.
    • header: indicates that the CSV table contains the table header information.
    • nullValue: indicates that null is set to indicate the null value in the CSV table.
    • comment: indicates that the CSV table uses a slash (/) to indicate the beginning of a comment.
    • compression: indicates that the CSV table is compressed in the gzip, bzip2, or deflate format. If compression is not required, set this parameter to none.
    • encoding: indicates that the table uses the utf-8 encoding format. You can choose utf-8, gb2312, or gbk as needed. The default encoding format is utf-8.
    
+
     1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+20
    CREATE TABLE IF NOT EXISTS table4 (
+    col_1 STRING,
+    col_2 INT
+)
+USING csv
+OPTIONS (
+    path 'obs://bucketName/filePath',
+    delimiter       = ',',
+    quote            = '#',
+    escape           = '|',
+    multiline        = false,
+    dateFormat       = 'yyyy-MM-dd',
+    timestampFormat  = 'yyyy-MM-dd HH:mm:ss',
+    mode             = 'failfast',
+    header           = true,
+    nullValue        = 'null',
+    comment          = '*',
+    compression      = 'deflate',
+    encoding         = 'utf - 8'
+);
+
    
+
+
    
+
    
 
 
    
 
    
diff --git a/docs/dli/sqlreference/dli_08_0077.html b/docs/dli/sqlreference/dli_08_0077.html
index a9cf61da..6b549b23 100644
--- a/docs/dli/sqlreference/dli_08_0077.html
+++ b/docs/dli/sqlreference/dli_08_0077.html
@@ -2,8 +2,11 @@
 
 
    Creating an OBS Table Using the Hive Syntax
    
 
    Function
    This statement is used to create an OBS table using the Hive syntax. The main differences between the DataSource and the Hive syntax lie in the supported data formats and the number of supported partitions. For details, see syntax and precautions.
    
+
     
    You are advised to use the OBS parallel file system for storage. A parallel file system is a high-performance file system that provides latency in milliseconds, TB/s-level bandwidth, and millions of IOPS. It applies to interactive big data analysis scenarios.
    
+
    
 
    
-
    Usage
    • The size of the table will be calculated during creation.
    • When data is added, the table size will not be changed.
    • You can view the table size on OBS.
    
+
    Precautions
    • The size of a table is calculated when the table is created.
    • When data is added, the table size will not be changed.
    • You can check the table size on OBS.
    • Table properties cannot be specified using CTAS table creation statements.
    • Instructions on using partitioned tables:
      • When you create a partitioned table, ensure that the specified column in PARTITIONED BY is not a column in the table and the data type is specified. The partition column supports only the open-source Hive table types including string, boolean, tinyint, smallint, short, int, bigint, long, decimal, float, double, date, and timestamp.
      • Multiple partition fields can be specified. The partition fields need to be specified after the PARTITIONED BY keyword, instead of the table name. Otherwise, an error occurs.
      • A maximum of 200,000 partitions can be created in a single table.
      • CTAS table creation statements cannot be used to create partitioned tables.
      
+
    
 
    
 
    Syntax
     1
  2
@@ -20,8 +23,7 @@
 13
 14
 15
-16
-17
    CREATE [EXTERNAL] TABLE [IF NOT EXISTS] [db_name.]table_name 
+16
    CREATE [EXTERNAL] TABLE [IF NOT EXISTS] [db_name.]table_name 
   [(col_name1 col_type1 [COMMENT col_comment1], ...)]
   [COMMENT table_comment] 
   [PARTITIONED BY (col_name2 col_type2, [COMMENT col_comment2], ...)] 
@@ -29,8 +31,7 @@
   [STORED AS file_format] 
   LOCATION 'obs_path'
   [TBLPROPERTIES (key = value)]
-  [AS select_statement];
-
+  [AS select_statement]
 row_format:
   : SERDE serde_cls [WITH SERDEPROPERTIES (key1=val1, key2=val2, ...)]
   | DELIMITED [FIELDS TERMINATED BY char [ESCAPED BY char]]
@@ -42,130 +43,321 @@
 
 
    
 
-
    Keyword
    • EXTERNAL: Creates an OBS table.
    • IF NOT EXISTS: Prevents system errors when the created table exists.
    • COMMENT: Field or table description.
    • PARTITIONED BY: Partition field.
    • ROW FORMAT: Row data format.
    • STORED AS: Specifies the format of the file to be stored. Currently, only the TEXTFILE, AVRO, ORC, SEQUENCEFILE, RCFILE, and PARQUET format are supported.
    • LOCATION: Specifies the path of OBS. This keyword is mandatory when you create OBS tables.
    • TBLPROPERTIES: Allows you to add the key/value properties to a table.
      For example, you can use this statement to enable the multiversion function to back up and restore table data. After the multiversion function is enabled, the system automatically backs up table data when you delete or modify the data using insert overwrite or truncate, and retains the data for a certain period. You can quickly restore data within the retention period. For details about SQL syntax related to the multiversion function, see Enabling or Disabling Multiversion Backup and Backing Up and Restoring Data of Multiple Versions.
      
-
      When creating an OBS table, you can use TBLPROPERTIES ("dli.multi.version.enable"="true") to enable multiversion. For details, see the following example.
      
+
      Keywords
      • EXTERNAL: Creates an OBS table.
      • IF NOT EXISTS: Prevents system errors when the created table exists.
      • COMMENT: Field or table description.
      • PARTITIONED BY: Partition field.
      • ROW FORMAT: Row data format.
      • STORED AS: Specifies the format of the file to be stored. Currently, only the TEXTFILE, AVRO, ORC, SEQUENCEFILE, RCFILE, and PARQUET format are supported.
      • LOCATION: Specifies the path of OBS. This keyword is mandatory when you create OBS tables.
      • TBLPROPERTIES: Allows you to add the key/value properties to a table.
        • You can use this statement to enable the multiversion function to back up and restore table data. After the multiversion function is enabled, the system automatically backs up table data when you delete or modify the data using insert overwrite or truncate, and retains the data for a certain period. You can quickly restore data within the retention period. For details about the SQL syntax for the multiversion function, see Enabling or Disabling Multiversion Backup and Backing Up and Restoring Data of Multiple Versions.
          When creating an OBS table, you can use TBLPROPERTIES ("dli.multi.version.enable"="true") to enable multiversion. For details, see the following example.
          
 
-
          Table 1 TBLPROPERTIES parameters
          Key
          
+
          
-
-
-
-
-
-
-
-
-
          Table 1 TBLPROPERTIES parameters
          Key
          
 
          Value
          
+
          Value
          
           		
 
          
 
          dli.multi.version.enable
          
+
          dli.multi.version.enable
          
 
          • true: Enable the multiversion backup function.
          • false: Disable the multiversion backup function.
          
+
          • true: Enable the multiversion backup function.
          • false: Disable the multiversion backup function.
          
           		
 
          comment
          
+
          comment
          
 
          Description of the table
          
+
          Description of the table
          
           		
 
          orc.compress
          
+
          orc.compress
          
 
          An attribute of the ORC table, which specifies the compression mode of the ORC storage. Available values are as follows:
          
-
          • ZLIB
          • SNAPPY
          • NONE
          
+
          An attribute of the ORC table, which specifies the compression mode of the ORC storage. Available values are as follows:
          
+
          • ZLIB
          • SNAPPY
          • NONE
          • PARQUET 
          
           		
 
          auto.purge
          
+
          auto.purge
          
 
          If this parameter is set to true, the deleted or overwritten data is removed and will not be dumped to the recycle bin.
          
+
          If this parameter is set to true, the deleted or overwritten data is removed and will not be dumped to the recycle bin.
          
           		
 
          
           
 
          
 
          
+
 
        • AS: You can run the CREATE TABLE AS statement to create a table.
          • 
 
-
          Parameter
          
-
          Table 2 Parameter description
          Parameter
          
+
          Parameters
          
+
          
-
+
-
-
+
-
-
+
-
-
+
-
-
+
-
-
+
-
-
+
-
-
+
-
-
+
-
-
+
-
-
+
-
-
+
          Table 2 Parameters
          Parameter
          
 
          Description
          
+
          Mandatory
          
+
          Description
          
           		
 
          
 
          db_name
          
+
          db_name
          
 
          Database name that contains letters, digits, and underscores (_). The value cannot contain only digits and cannot start with a digit or underscore (_).
          
+
          No
          
+
          Database name
          
+
          The value can contain letters, numbers, and underscores (_), but it cannot contain only numbers or start with a number or underscore (_).
          
           		
 
          table_name
          
+
          table_name
          
 
          Table name of a database that contains letters, digits, and underscores (_). The value cannot contain only digits and cannot start with a digit or underscore (_). The matching rule is ^(?!_)(?![0-9]+$)[A-Za-z0-9_$]*$. If special characters are required, use single quotation marks ('') to enclose them.
          
+
          Yes
          
+
          Table name in the database
          
+
          The value can contain letters, numbers, and underscores (_), but it cannot contain only numbers or start with a number or underscore (_). The matching rule is ^(?!_)(?![0-9]+$)[A-Za-z0-9_$]*$.
          
+
          Special characters must be enclosed in single quotation marks ('').
          
+
          The table name is case insensitive.
          
           		
 
          col_name
          
+
          col_name
          
 
          Field name
          
+
          Yes
          
+
          Name of a column field
          
+
          The column field can contain letters, numbers, and underscores (_), but it cannot contain only numbers and must contain at least one letter.
          
+
          The column name is case insensitive.
          
           		
 
          col_type
          
+
          col_type
          
 
          Field type
          
+
          Yes
          
+
          Data type of a column field, which is primitive.
          
           		
 
          col_comment
          
+
          col_comment
          
 
          Field description
          
+
          No
          
+
          Column field description, which can only be string constants.
          
           		
 
          row_format
          
+
          row_format
          
 
          Line data format
          
+
          Yes
          
+
          Row data format This function is available only for textfile tables.
          
           		
 
          file_format
          
+
          file_format
          
 
          OBS table storage format. TEXTFILE, AVRO, ORC, SEQUENCEFILE, RCFILE, and PARQUET are supported.
          
+
          Yes
          
+
          OBS table storage format, which can be TEXTFILE, AVRO, ORC, SEQUENCEFILE, RCFILE, or PARQUET.
          
           		
 
          table_comment
          
+
          table_comment
          
 
          Table description
          
+
          No
          
+
          Table description, which can only be string constants.
          
           		
 
          obs_path
          
+
          obs_path
          
 
          OBS path
          
+
          Yes
          
+
          OBS storage path where data files are stored. You are advised to use an OBS parallel file system for storage.
          
+
          Format: obs://bucketName/tblPath
          
+
          bucketName: bucket name
          
+
          tblPath: directory name. You do not need to specify the file name following the directory.
          
+
          If there is a folder and a file with the same name in the OBS directory, the path pointed to by the OBS table will prioritize the file over the folder.
          
           		
 
          key = value
          
+
          key = value
          
 
          Set table properties and values.
          
-
          For example, if you want to enable multiversion, you can set "dli.multi.version.enable"="true".
          
+
          No
          
+
          Set table properties and values.
          
+
          For example, if you want to enable multiversion, you can set "dli.multi.version.enable"="true".
          
           		
 
          select_statement
          
+
          select_statement
          
 
          The CREATE TABLE AS statement is used to insert the SELECT query result of the source table or a data record to a new table in OBS bucket.
          
+
          No
          
+
          Used in the CREATE TABLE AS statement to insert the SELECT query results of the source table or a data record to a table newly created in the OBS bucket.
          
           		
 
          
           
 
          
 
          
 
          
-
          Precautions
          • The table and column names are case-insensitive.
          • Descriptions of table names and column names support only string constants.
          • During table creation, you need to specify the column name and corresponding data type. The data type is primitive type.
          • If a folder and a file have the same name in the OBS directory, the file is preferred as the path when creating an OBS table.
          • When you create a partitioned table, ensure that the specified column in PARTITIONED BY is not a column in the table and the data type is specified. The partition column supports only the open-source Hive table types including string, boolean, tinyint, smallint, short, int, bigint, long, decimal, float, double, date, and timestamp.
          • Multiple partition fields can be specified. The partition fields need to be specified after the PARTITIONED BY keyword, instead of the table name. Otherwise, an error occurs.
          • A maximum of 100,000 partitions can be created in a single table.
          • The CREATE TABLE AS statement cannot specify table attributes or create partitioned tables.
          
-
          
-
          Example
          • To create a Parquet table named student, in which the id, name, and score fields are contained and the data types of the respective fields are INT, STRING, and FLOAT, run the following statement:
            1
            CREATE TABLE student (id INT, name STRING, score FLOAT) STORED AS PARQUET LOCATION 'obs://bucketName/filePath';
+
            Example 1: Creating an OBS Non-Partitioned Table
            Example description: Create an OBS non-partitioned table named table1 and use the STORED AS keyword to set the storage format of the table to orc.
            
+
            In practice, you can store OBS tables in textfile, avro, orc, sequencefile, rcfile, or parquet format.
            
+
            1
+2
+3
+4
+5
+6
            CREATE TABLE IF NOT EXISTS table1 (
+    col_1   STRING,
+    col_2   INT
+)
+STORED AS orc
+LOCATION 'obs://bucketName/filePath';
 
            
 
 
            
-
          • To create a table named student, for which classNo is the partition field and two fields name and score are specified, run the following statement:
            1
            CREATE TABLE IF NOT EXISTS student(name STRING, score DOUBLE) PARTITIONED BY (classNo INT) STORED AS PARQUET LOCATION 'obs://bucketName/filePath';
+
            
+
            Example 2: Creating an OBS Partitioned Table
            Example description: Create a partitioned table named student, which is partitioned using facultyNo and classNo.
            
+
            In practice, you can select a proper partitioning field and add it to the end of the PARTITIONED BY keyword.
             1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+10
            CREATE TABLE IF NOT EXISTS student(
+    id      INT,
+    name    STRING
+)
+STORED AS avro
+LOCATION 'obs://bucketName/filePath'
+PARTITIONED BY (
+    facultyNo   INT,
+    classNo     INT
+);
 
            
 
 
            
-
             
            classNo is a partition field and must be specified after the PARTITIONED BY keyword, that is, PARTITIONED BY (classNo INT). It cannot be specified after the table name as a table field.
            
-
            
-
          • To create table t1 and insert data of table t2 into table t1 by using the Hive syntax, run the following statement:
            1
            CREATE TABLE t1 STORED AS parquet LOCATION 'obs://bucketName/filePath' as select * from t2;
+
            
+
+
            Example 3: Using CTAS to Create an OBS Table Using All or Part of the Data in the Source Table
            Example description: Based on the OBS table table1 created in Example 1: Creating an OBS Non-Partitioned Table, use the CTAS syntax to copy data from table1 to table1_ctas.
            
+
            When using CTAS to create a table, you can ignore the syntax used to create the table being copied. This means that regardless of the syntax used to create table1, you can use the DataSource syntax to create table1_ctas.
            
+
            In addition, in this example, the storage format of table1 is orc, and the storage format of table1_ctas may be sequencefile or parquet. This means that the storage format of the table created by CTAS may be different from that of the original table.
            
+
            Use the SELECT statement following the AS keyword to select required data and insert the data to table1_ctas.
            
+
            The SELECT syntax is as follows: SELECT <Column name > FROM <Table name > WHERE <Related filter criteria>.
            
+
            • In this example, SELECT * FROM table1 is used. * indicates that all columns are selected from table1 and all data in table1 is inserted into table1_ctas.
              1
+2
+3
+4
+5
+6
              CREATE TABLE IF NOT EXISTS table1_ctas
+STORED AS sequencefile
+LOCATION 'obs://bucketName/filePath'
+AS
+SELECT  *
+FROM    table1;
 
              
 
 
              
-
            • Create the student table and enable multiversion by using the Hive syntax.
              1
              CREATE TABLE student (id INT, name STRING, score FLOAT) STORED AS PARQUET LOCATION 'obs://bucketName/filePath' TBLPROPERTIES ("dli.multi.version.enable"="true");
+
            • To filter and insert data into table1_ctas in a customized way, you can use the following SELECT statement: SELECT col_1 FROM table1 WHERE col_1 = 'Ann'. This will allow you to select only col_1 from table1 and insert data into table1_ctas where the value equals 'Ann'.
              1
+2
+3
+4
+5
+6
+7
              CREATE TABLE IF NOT EXISTS table1_ctas
+USING parquet
+OPTIONS (path 'obs:// bucketName/filePath')
+AS
+SELECT  col_1
+FROM    table1
+WHERE   col_1 = 'Ann';
 
              
 
 
              
 
              • 
 
              
+
              Example 4: Creating an OBS Non-Partitioned Table and Customizing the Data Type of a Column Field
              Example description: Create an OBS non-partitioned table named table2. You can customize the native data types of column fields based on service requirements.
              
+
              • STRING, CHAR, or VARCHAR can be used for text characters.
              • TIMESTAMP or DATE can be used for time characters.
              • INT, SMALLINT/SHORT, BIGINT/LONG, or TINYINT can be used for integer characters.
              • FLOAT, DOUBLE, or DECIMAL can be used for decimal calculation.
              • BOOLEAN can be used if only logical switches are involved.
              
+
              For details, see "Data Types" > "Primitive Data Types".
              
+
               1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+10
+11
+12
+13
+14
+15
+16
+17
              CREATE TABLE IF NOT EXISTS table2 (
+    col_01  STRING,
+    col_02  CHAR (2),
+    col_03  VARCHAR (32),
+    col_04  TIMESTAMP,
+    col_05  DATE,
+    col_06  INT,
+    col_07  SMALLINT,
+    col_08  BIGINT,
+    col_09  TINYINT,
+    col_10  FLOAT,
+    col_11  DOUBLE,
+    col_12  DECIMAL (10, 3),
+    col_13  BOOLEAN
+)
+STORED AS parquet
+LOCATION 'obs://bucketName/filePath';
+
              
+
+
              
+
              
+
              Example 5: Creating an OBS Partitioned Table and Customizing TBLPROPERTIES Parameters
              Example description: Create an OBS partitioned table named table3 and partition the table based on col_3. Set dli.multi.version.enable, comment, orc.compress, and auto.purge in TBLPROPERTIES.
              
+
              • dli.multi.version.enable: In this example, set this parameter to true, indicating that the DLI data versioning function is enabled for table data backup and restoration.
              • comment: table description, which can be modified later.
              • orc.compress: compression mode of the orc format, which is ZLIB in this example.
              • auto.purge: In this example, set this parameter to true, indicating that data that is deleted or overwritten will bypass the recycle bin and be permanently deleted.
              
+
               1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+10
+11
+12
+13
              CREATE TABLE IF NOT EXISTs table3 (
+    col_1 STRING,
+    col_2 STRING
+)
+PARTITIONED BY (col_3 DATE)
+STORED AS rcfile
+LOCATION 'obs://bucketName/filePath'
+TBLPROPERTIES (
+    dli.multi.version.enable  = true,
+    comment                   = 'Created by dli',
+    orc.compress              = 'ZLIB',
+    auto.purge                = true
+);
+
              
+
+
              
+
              
+
              Example 6: Creating a Non-Partitioned Table in textfile Format and Setting ROW FORMAT
              Example description: Create a non-partitioned table named table4 in the textfile format and set ROW FORMAT (the ROW FORMAT function is available only for textfile tables).
              
+
              • FIELDS: columns in a table. Each field has a name and data type. Fields in a table are separated by slashes (/).
              • COLLECTION ITEMS: A collection item refers to an element in a group of data, which can be an array, a list, or a collection. Collection items in a table are separated by $.
              • MAP KEYS: A map key is a data structure of key-value pairs and is used to store a group of associated data. Map keys in a table are separated by number signs (#).
              • LINES: rows in a table. Each row contains a group of field values. Rows in a table end with \n. (Note that only \n can be used as the row separator.)
              • NULL: a special value that represents a missing or unknown value. In a table, NULL indicates that the field has no value or the value is unknown. When there is a null value in the data, it is represented by the string null.
              
+
               1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+10
+11
+12
              CREATE TABLE IF NOT EXISTS table4 (
+    col_1   STRING,
+    col_2   INT
+)
+STORED AS textfile
+LOCATION 'obs://bucketName/filePath'
+ROW FORMAT
+DELIMITED FIELDS TERMINATED   BY '/'
+COLLECTION ITEMS TERMINATED   BY '$'
+MAP KEYS TERMINATED           BY '#'
+LINES TERMINATED              BY '\n'
+NULL DEFINED                  AS 'null';
+
              
+
+
              
+
              
 
 
              
 
              
diff --git a/docs/dli/sqlreference/dli_08_0079.html b/docs/dli/sqlreference/dli_08_0079.html
index 7909e5d0..44696c01 100644
--- a/docs/dli/sqlreference/dli_08_0079.html
+++ b/docs/dli/sqlreference/dli_08_0079.html
@@ -10,10 +10,10 @@
 
              Or
              
 
              ALTER TABLE table_name RECOVER PARTITIONS;
              
 
              
-
              Keyword
              • PARTITIONS: partition information
              • SERDEPROPERTIES: Serde attribute
              
+
              Keywords
              • PARTITIONS: partition information
              • SERDEPROPERTIES: Serde attribute
              
 
              
 
              Parameters
              
-
              Table 1 Parameter description
              Parameter
              
+
              
diff --git a/docs/dli/sqlreference/dli_08_0080.html b/docs/dli/sqlreference/dli_08_0080.html
index 86459dd1..8fb7ae36 100644
--- a/docs/dli/sqlreference/dli_08_0080.html
+++ b/docs/dli/sqlreference/dli_08_0080.html
@@ -10,7 +10,7 @@
 
            • Deleting a Partition
              
 
              • 
-
            • Deleting Partitions by Specifying Filter Criteria (Only OBS Tables Supported)
              
+
            • Deleting Partitions by Specifying Filter Criteria (Only Supported on OBS Tables)
              
 
            • Altering the Partition Location of a Table (Only OBS Tables Supported)
              
 
              • 
diff --git a/docs/dli/sqlreference/dli_08_0081.html b/docs/dli/sqlreference/dli_08_0081.html
index a01e080b..7ef2fe9a 100644
--- a/docs/dli/sqlreference/dli_08_0081.html
+++ b/docs/dli/sqlreference/dli_08_0081.html
@@ -18,10 +18,10 @@
 
 
-
              Keyword
              • IF NOT EXISTS: prevents errors when partitions are repeatedly added.
              • PARTITION: specifies a partition.
              • LOCATION: specifies the partition path.
              
+
              Keywords
              • IF NOT EXISTS: prevents errors when partitions are repeatedly added.
              • PARTITION: specifies a partition.
              • LOCATION: specifies the partition path.
              
 
              
 
              Parameters
              
-
              Table 1 Parameters
              Parameter
              
               		
 
              Description
              
               		
 
 
 
              Table 1 Parameter description
              Parameter
              
+
              
@@ -47,7 +47,9 @@
 
              Precautions
              • When you add a partition to a table, the table and the partition column (specified by PARTITIONED BY during table creation) must exist, and the partition to be added cannot be added repeatedly. Otherwise, an error is reported. You can use IF NOT EXISTS to avoid errors if the partition does not exist.
              • If tables are partitioned by multiple fields, you need to specify all partitioning fields in any sequence when adding partitions.
              • By default, parameters in partition_specs contain parentheses (). For example: PARTITION (dt='2009-09-09',city='xxx').
              • If you need to specify an OBS path when adding a partition, the OBS path must exist. Otherwise, an error occurs.
              • To add multiple partitions, you need to use spaces to separate each set of LOCATION 'obs_path' in the PARTITION partition_specs. The following is an example:
                PARTITION partition_specs LOCATION 'obs_path' PARTITION partition_specs LOCATION 'obs_path'
                
-
              • If the path specified in the new partition contains subdirectories (or nested subdirectories), all file types and content in the subdirectories are considered partition records. Ensure that all file types and file content in the partition directory are the same as those in the table. Otherwise, an error is reported.
              
+
            • If the path specified in the new partition contains subdirectories (or nested subdirectories), all file types and content in the subdirectories are considered partition records.
              Ensure that all file types and file content in the partition directory are the same as those in the table. Otherwise, an error is reported.
              
+
              You can set multiLevelDirEnable to true in the OPTIONS statement to query the content in the subdirectory. The default value is false (Note that this configuration item is a table attribute, exercise caution when performing this operation. Hive tables do not support this configuration item.)
              
+
              • 
 
              Example
              • The following example shows you how to add partition data when the OBS table is partitioned by a single column.
                1. Use the DataSource syntax to create an OBS table, and partition the table by column external_data. The partition data is stored in obs://bucketName/datapath.
                  create table testobstable(id varchar(128), external_data varchar(16)) using JSON OPTIONS (path 'obs://bucketName/datapath') PARTITIONED by (external_data);
                  
 
                2. Copy the partition directory to obs://bucketName/datapath. In this example, copy all files in the partition column external_data=22 to obs://bucketName/datapath.
                3. Run the following command to add partition data:
                  ALTER TABLE testobstable ADD
diff --git a/docs/dli/sqlreference/dli_08_0082.html b/docs/dli/sqlreference/dli_08_0082.html
index e6070366..1886164a 100644
--- a/docs/dli/sqlreference/dli_08_0082.html
+++ b/docs/dli/sqlreference/dli_08_0082.html
@@ -12,10 +12,10 @@
 
 
              
-
              Keyword
              • PARTITION: a specified partition
              • RENAME: new name of the partition
              
+
              Keywords
              • PARTITION: a specified partition
              • RENAME: new name of the partition
              
 
              
 
              Parameters
              
-
              Table 1 Parameters
              Parameter
              
               		
 
              Description
              
               		
 
 
 
 
              Table 1 Parameter description
              Parameter
              
+
              
diff --git a/docs/dli/sqlreference/dli_08_0083.html b/docs/dli/sqlreference/dli_08_0083.html
index 291c27c4..6d93665c 100644
--- a/docs/dli/sqlreference/dli_08_0083.html
+++ b/docs/dli/sqlreference/dli_08_0083.html
@@ -1,9 +1,10 @@
 
              Deleting a Partition
              
-
              Function
              Deletes one or more partitions from a partitioned table.
              
+
              Function
              This statement is used to delete one or more partitions from a partitioned table.
              
+
              Partitioned tables are classified into OBS tables and DLI tables. You can delete one or more partitions from a DLI or OBS partitioned table based on specified conditions. OBS tables also support deleting partitions by specifying filter criteria. For details, see Deleting Partitions by Specifying Filter Criteria (Only Supported on OBS Tables).
              
 
              
-
              Precautions
              • The table in which partitions are to be deleted must exist. Otherwise, an error is reported.
              • The to-be-deleted partition must exist. Otherwise, an error is reported. To avoid this error, add IF EXISTS in this statement.
              
+
              Precautions
              • The table in which partitions are to be deleted must exist. Otherwise, an error is reported.
              • The partition to be deleted must exist. Otherwise, an error is reported. To avoid this error, add IF EXISTS to this statement.
              
 
              
 
              Syntax
              Table 1 Parameters
              Parameter
              
               		
 
              Description
              
               		
 
 
              1
 2
@@ -14,10 +15,10 @@
 
 
              
 
-
              Keyword
              • DROP: deletes a partition.
              • IF EXISTS: The partition to be deleted must exist. Otherwise, an error is reported.
              • PARTITION: specifies the partition to be deleted
              
+
              Keywords
              • DROP: deletes a partition.
              • IF EXISTS: The partition to be deleted must exist. Otherwise, an error is reported.
              • PARTITION: specifies the partition to be deleted
              
 
              
 
              Parameters
              
-
              Table 1 Parameter description
              Parameter
              
+
              
@@ -35,22 +36,192 @@
 
-
              Table 1 Parameters
              Parameter
              
               		
 
              Description
              
 
              
 
              partition_specs
              
 
              Partition information, in the format of "key=value", where key indicates the partition field and value indicates the partition value. In a table partitioned using multiple fields, if you specify all the fields of a partition name, only the partition is deleted; if you specify only some fields of a partition name, all matching partitions will be deleted. By default, the partition_specs parameter contains (). For example: PARTITION (dt='2009-09-09',city='xxx')
              
+
              Partition information, in the format of "key=value", where key indicates the partition field and value indicates the partition value. In a table partitioned using multiple fields, if you specify all the fields of a partition name, only the partition is deleted; if you specify only some fields of a partition name, all matching partitions will be deleted. By default, parameters in partition_specs contain parentheses (), for example, PARTITION (facultyNo=20, classNo=103);.
              
               		
 
              
 
 
              
 
              
 
-
              Example
              To delete the dt = '2008-08-08', city = 'xxx' partition in the student table, run the following statement:
              
-
              1
+
              Example
              To help you understand how to use this statement, this section provides an example of deleting a partition from the source data.
              
+
              1. Use the DataSource syntax to create an OBS partitioned table.
                An OBS partitioned table named student is created, which contains the student ID (id), student name (name), student faculty number (facultyNo), and student class number (classNo) and uses facultyNo and classNo for partitioning.
                
+
                1
 2
-3
                ALTER TABLE student
-  DROP
-  PARTITION (dt = '2008-08-08', city = 'xxx');
+3
+4
+5
+6
+7
+8
                create table if not exists student (
+id int,
+name STRING,
+facultyNo int,
+classNo INT)
+using csv
+options (path 'obs://bucketName/filePath')
+partitioned by (faculytNo, classNo);
 
                
 
 
                
+
              2. Insert partition data into the table.
                You can insert the following data:
                
+
                 1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+20
+21
+22
+23
+24
+25
+26
+27
                INSERT into student
+partition (facultyNo = 10, classNo = 101)
+values (1010101, "student01"), (1010102, "student02");
+
+INSERT into student
+partition (facultyNo = 10, classNo = 102)
+values (1010203, "student03"), (1010204, "student04");
+
+INSERT into student
+partition (facultyNo = 20, classNo = 101)
+values (2010105, "student05"), (2010106, "student06");
+
+INSERT into student
+partition (facultyNo = 20, classNo = 102)
+values (2010207, "student07"), (2010208, "student08");
+
+INSERT into student
+partition (facultyNo = 20, classNo = 103)
+values (2010309, "student09"), (2010310, "student10");
+
+INSERT into student
+partition (facultyNo = 30, classNo = 101)
+values (3010111, "student11"), (3010112, "student12");
+
+INSERT into student
+partition (facultyNo = 30, classNo = 102)
+values (3010213, "student13"), (3010214, "student14");
+
                
+
+
                
+
              3. View the partitions.
                You can view all partitions in the table.
                
+
                The example code is as follows:
                
+
                SHOW partitions student;
                
+
+
                
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                Table 2 Example table data
                facultyNo
                
+
                classNo
                
+
                facultyNo=10
                
+
                classNo=101
                
+
                facultyNo=10
                
+
                classNo=102
                
+
                facultyNo=20
                
+
                classNo=101
                
+
                facultyNo=20
                
+
                classNo=102
                
+
                facultyNo=20
                
+
                classNo=103
                
+
                facultyNo=30
                
+
                classNo=101
                
+
                facultyNo=30
                
+
                classNo=102
                
+
                
+
                
+
              4. Delete a partition.
                • Example 1: deleting a partition by specifying multiple filter criteria
                  In this example, the partition whose facultyNo is 20 and classNo is 103 is deleted.
                  
+
                   
                  For details about how to delete a partition by specifying filter criteria, see Deleting Partitions by Specifying Filter Criteria (Only Supported on OBS Tables).
                  
+
                  
+
                  The example code is as follows:
                  
+
                  ALTER TABLE student
+DROP IF EXISTS
+PARTITION (facultyNo=20, classNo=103);
                  
+
                  Use the method described in step 3 to check the partitions in the table. You can see that the partition has been deleted.
                  
+
                  SHOW partitions student;
                  
+
                • Example 2: deleting a partition by specifying a single filter criterion
                  In this example, the partitions whose facultyNo is 30 is deleted. During data insertion, there are two partitions whose facultyNo is 30.
                  
+
                   
                  For details about how to delete a partition by specifying filter criteria, see Deleting Partitions by Specifying Filter Criteria (Only Supported on OBS Tables).
                  
+
                  
+
                  The example code is as follows:
                  
+
                  ALTER TABLE student
+DROP IF EXISTS
+PARTITION (facultyNo = 30);
                  
+
                  Execution result:
                  
+
+
                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                  Table 3 Example table data
                  facultyNo
                  
+
                  classNo
                  
+
                  facultyNo=10
                  
+
                  classNo=101
                  
+
                  facultyNo=10
                  
+
                  classNo=102
                  
+
                  facultyNo=20
                  
+
                  classNo=101
                  
+
                  facultyNo=20
                  
+
                  classNo=102
                  
+
                  facultyNo=20
                  
+
                  classNo=103
                  
+
                  
+
                  
+
                
+
              
 
              
 
              
 
              
diff --git a/docs/dli/sqlreference/dli_08_0084.html b/docs/dli/sqlreference/dli_08_0084.html
index 1193cbfc..78e2d617 100644
--- a/docs/dli/sqlreference/dli_08_0084.html
+++ b/docs/dli/sqlreference/dli_08_0084.html
@@ -12,10 +12,10 @@
 
 
              
 
-
              Keyword
              • PARTITION: a specified partition
              • LOCATION: path of the partition
              
+
              Keywords
              • PARTITION: a specified partition
              • LOCATION: path of the partition
              
 
              
 
              Parameters
              
-
              Table 1 Parameter description
              Parameter
              
+
              
diff --git a/docs/dli/sqlreference/dli_08_0087.html b/docs/dli/sqlreference/dli_08_0087.html
index 63347607..a33bf1d8 100644
--- a/docs/dli/sqlreference/dli_08_0087.html
+++ b/docs/dli/sqlreference/dli_08_0087.html
@@ -8,10 +8,10 @@
 
 
-
              Keyword
              • If the table is stored in OBS, only the metadata is deleted. The data stored on OBS is not deleted.
              • If the table is stored in DLI, the data and the corresponding metadata are all deleted.
              
+
              Keywords
              • If the table is stored in OBS, only the metadata is deleted. The data stored on OBS is not deleted.
              • If the table is stored in DLI, the data and the corresponding metadata are all deleted.
              
 
              
 
              Parameters
              
-
              Table 1 Parameters
              Parameter
              
               		
 
              Description
              
               		
 
              Table 1 Parameter description
              Parameter
              
+
              
@@ -31,7 +31,7 @@
 
              Table 1 Parameters
              Parameter
              
               		
 
              Description
              
 
              
 
              
 
-
              Precautions
              The to-be-deleted table must exist in the current database. Otherwise, an error is reported. To avoid this error, add IF EXISTS in this statement.
              
+
              Precautions
              The to-be-deleted table must exist in the current database. Otherwise, an error is reported. To avoid this error, add IF EXISTS to this statement.
              
 
              
 
              Example
              1. Create a table. For details, see Creating an OBS Table or Creating a DLI Table.
              2. Run the following statement to delete table test from the current database:
                1
                DROP TABLE IF EXISTS test;
 
                
diff --git a/docs/dli/sqlreference/dli_08_0088.html b/docs/dli/sqlreference/dli_08_0088.html
index fd80981e..4d1570c1 100644
--- a/docs/dli/sqlreference/dli_08_0088.html
+++ b/docs/dli/sqlreference/dli_08_0088.html
@@ -22,8 +22,8 @@
 
                 
                Models and configuration files must be stored on OBS. The path format is obs://your_ak:your_sk@obs.your_obs_region.xxx.com:443/your_model_path. 
                
 
                
 
                
-
                Parameter Description
                
-
                Table 1 Parameter description
                Parameter
                
+
                Parameters
                
+
                
diff --git a/docs/dli/sqlreference/dli_08_0090.html b/docs/dli/sqlreference/dli_08_0090.html
index 0d200bfa..114ce2e6 100644
--- a/docs/dli/sqlreference/dli_08_0090.html
+++ b/docs/dli/sqlreference/dli_08_0090.html
@@ -8,10 +8,10 @@
 
 
-
                Keyword
                FROM/IN: followed by the name of a database whose tables and views will be displayed.
                
+
                Keywords
                FROM/IN: followed by the name of a database whose tables and views will be displayed.
                
 
                
 
                Parameters
                
-
                Table 1 Parameters
                Parameter
                
                 		
 
                Mandatory
                
                 		
 
                Table 1 Parameter description
                Parameter
                
+
                
diff --git a/docs/dli/sqlreference/dli_08_0091.html b/docs/dli/sqlreference/dli_08_0091.html
index 85a40bc7..12e93168 100644
--- a/docs/dli/sqlreference/dli_08_0091.html
+++ b/docs/dli/sqlreference/dli_08_0091.html
@@ -8,10 +8,10 @@
 
 
-
                Keyword
                CREATE TABLE: statement for creating a table
                
+
                Keywords
                CREATE TABLE: statement for creating a table
                
 
                
 
                Parameters
                
-
                Table 1 Parameters
                Parameter
                
                 		
 
                Description
                
                 		
 
                Table 1 Parameter description
                Parameter
                
+
                
@@ -28,12 +28,23 @@
 
                Precautions
                The table specified in this statement must exist. Otherwise, an error will occur.
                
 
                
-
                Example
                1. Create a table. For details, see Creating an OBS Table or Creating a DLI Table.
                
-
                1. Run the following statement to view the statement that is used to create table test: 
                Table 1 Parameter
                Parameter
                
                 		
 
                Description
                
                 		
 
                1
                SHOW CREATE TABLE test;
-
                
-
+
                Example
                Example of Spark 2.4.5:
                • Run the following command to return the statement for creating the testDB01.testTable5 table:
                  SHOW CREATE TABLE testDB01.testTable5
                  
+
                • Return the statement for creating the test table.
                  createtab_stmt
+ CREATE TABLE `testDB01`.`testTable5`(`id` INT, `age` INT, `money` DOUBLE)
+COMMENT 'test'
+ROW FORMAT SERDE 'org.apache.hadoop.hive.ql.io.parquet.serde.ParquetHiveSerDe'
+WITH SERDEPROPERTIES (
+  'serialization.format' = '1'
+)
+STORED AS
+  INPUTFORMAT 'org.apache.hadoop.hive.ql.io.parquet.MapredParquetInputFormat'
+  OUTPUTFORMAT 'org.apache.hadoop.hive.ql.io.parquet.MapredParquetOutputFormat'
+TBLPROPERTIES (
+  'hive.serialization.extend.nesting.levels' = 'true',
+  'ddlUpdateTime' = '1707202585460'
+)
                  
+
                
 
                
-
 
                
 
 
                
diff --git a/docs/dli/sqlreference/dli_08_0092.html b/docs/dli/sqlreference/dli_08_0092.html
index 5917b5d1..5f5294cf 100644
--- a/docs/dli/sqlreference/dli_08_0092.html
+++ b/docs/dli/sqlreference/dli_08_0092.html
@@ -8,10 +8,10 @@
 
 
                
 
-
                Keyword
                TBLPROPERTIES: This statement allows you to add a key/value property to a table.
                
+
                Keywords
                TBLPROPERTIES: This statement allows you to add a key/value property to a table.
                
 
                
 
                Parameters
                
-
                Table 1 Parameter description
                Parameter
                
+
                
diff --git a/docs/dli/sqlreference/dli_08_0093.html b/docs/dli/sqlreference/dli_08_0093.html
index 36a911f7..05bd1c30 100644
--- a/docs/dli/sqlreference/dli_08_0093.html
+++ b/docs/dli/sqlreference/dli_08_0093.html
@@ -8,10 +8,10 @@
 
 
-
                Keyword
                •  COLUMNS: columns in the current table
                • FROM/IN: followed by the name of a database whose tables and views will be displayed. Keyword FROM is equivalent to IN. You can use either of them in a statement. 
                
+
                Keywords
                •  COLUMNS: columns in the current table
                • FROM/IN: followed by the name of a database whose tables and views will be displayed. Keyword FROM is equivalent to IN. You can use either of them in a statement. 
                
 
                
 
                Parameters
                
-
                Table 1 Parameters
                Parameter
                
                 		
 
                Description
                
                 		
 
                Table 1 Parameter description
                Parameter
                
+
                
diff --git a/docs/dli/sqlreference/dli_08_0094.html b/docs/dli/sqlreference/dli_08_0094.html
index 05467e6c..d1d37315 100644
--- a/docs/dli/sqlreference/dli_08_0094.html
+++ b/docs/dli/sqlreference/dli_08_0094.html
@@ -10,10 +10,10 @@
 
 
-
                Keyword
                • PARTITIONS: partitions in a specified table
                • PARTITION: a specified partition
                
+
                Keywords
                • PARTITIONS: partitions in a specified table
                • PARTITION: a specified partition
                
 
                
 
                Parameters
                
-
                Table 1 Parameters
                Parameter
                
                 		
 
                Description
                
                 		
 
                Table 1 Parameter description
                Parameter
                
+
                
diff --git a/docs/dli/sqlreference/dli_08_0095.html b/docs/dli/sqlreference/dli_08_0095.html
index 703ab465..9b68ede1 100644
--- a/docs/dli/sqlreference/dli_08_0095.html
+++ b/docs/dli/sqlreference/dli_08_0095.html
@@ -33,8 +33,8 @@
   : (val1 [, val2, ...])
-
                Keyword
                
-
                Table 1 Parameters
                Parameter
                
                 		
 
                Description
                
                 		
 
 
                Table 1 INSERT parameter description
                Parameter
                
+
                Keywords
                
+
                
diff --git a/docs/dli/sqlreference/dli_08_0096.html b/docs/dli/sqlreference/dli_08_0096.html
index fd91fe5f..ac0993ac 100644
--- a/docs/dli/sqlreference/dli_08_0096.html
+++ b/docs/dli/sqlreference/dli_08_0096.html
@@ -1,9 +1,9 @@
 
                String Functions
                
-
                The common character string functions of DLI are as follows:
                
+
                The common string functions of DLI are as follows:
                
 
-
                Table 1 INSERT keywords
                Parameter
                
                 		
 
                Description
                
                 		
 
 
                Table 1 String Operators
                Operator
                
+
                
@@ -197,9 +197,9 @@
 
                Table 1 String operators
                Operator
                
                 		
 
                Returned Data Type
                
                 		
 
                
 
                
-
                ||
                • Function
                  Concatenates two character strings.
                  
+
                  ||
                  • Function
                    Concatenates two strings.
                    
 
                  • Syntax
                    VARCHAR VARCHAR a || VARCHAR b
                    
-
                  • Parameter description
                    • a: character string.
                    • b: character string.
                    
+
                  • Parameters
                    • a: string.
                    • b: string.
                    
 
                  • Example
                    • Test statement
                      SELECT "hello" || "world";
                      
 
                    • Test result
                      "helloworld"
                      
 
                    
@@ -207,7 +207,7 @@
 
                  
 
                  CHAR_LENGTH
                  • Function
                    Returns the number of characters in a string.
                    
 
                  • Syntax
                    INT CHAR_LENGTH(a)
                    
-
                  • Parameter description
                    • a: character string.
                    
+
                  • Parameters
                    • a: string.
                    
 
                  • Example
                    • Test statement
                      SELECT  CHAR_LENGTH(var1) as aa FROM T1;
                      
 
                    • Test data and result
 
                      Table 2 Test data and result
                      Test Data (var1)
                      
@@ -229,7 +229,7 @@
 
 
                      CHARACTER_LENGTH
                      • Function
                        Returns the number of characters in a string.
                        
 
                      • Syntax
                        INT CHARACTER_LENGTH(a)
                        
-
                      • Parameter description
                        • a: character string.
                        
+
                      • Parameters
                        • a: string.
                        
 
                      • Example
                        • Test statement
                          SELECT  CHARACTER_LENGTH(var1) as aa FROM T1;
                          
 
                        • Test data and result
 
                          Table 3 Test data and result
                          Test Data (var1)
                          
@@ -251,7 +251,7 @@
 
 
                          CONCAT
                          • Function
                            Concatenates two or more string values to form a new string. If the value of any parameter is NULL, skip this parameter.
                            
 
                          • Syntax
                            VARCHAR CONCAT(VARCHAR var1, VARCHAR var2, ...)  
                            
-
                          • Parameter description
                            • var1: character string
                            • var2: character string
                            
+
                          • Parameters
                            • var1: string
                            • var2: string
                            
 
                          • Example
                            • Test statement
                              SELECT CONCAT("abc", "def", "ghi", "jkl");
                              
 
                            • Test result
                              "abcdefghijkl"
                              
 
                            
@@ -261,7 +261,7 @@
 
                             
                            If the value of separator is null, separator is combined with an empty string. If other parameters are set to null, the parameters whose values are null are skipped during combination.
                            
 
                            
 
                          • Syntax
                            VARCHAR CONCAT_WS(VARCHAR separator, VARCHAR var1, VARCHAR var2, ...)
                            
-
                          • Parameter description
                            • separator: separator.
                            • var1: character string
                            • var2: character string
                            
+
                          • Parameters
                            • separator: separator.
                            • var1: string
                            • var2: string
                            
 
                          • Example
                            • Test statement
                              SELECT CONCAT_WS("-", "abc", "def", "ghi", "jkl");
                              
 
                            • Test result
                              "abc-def-ghi-jkl"
                              
 
                            
@@ -269,7 +269,7 @@
 
                          
 
                          HASH_CODE
                          • Function
                            Returns the absolute value of HASH_CODE() of a string. In addition to string, int, bigint, float, and double are also supported.
                            
 
                          • Syntax
                            INT HASH_CODE(VARCHAR str)
                            
-
                          • Parameter description
                            • str: character string.
                            
+
                          • Parameters
                            • str: string.
                            
 
                          • Example
                            • Test statement
                              SELECT HASH_CODE("abc");
                              
 
                            • Test result
                              96354
                              
 
                            
@@ -277,7 +277,7 @@
 
                          
 
                          INITCAP
                          • Function
                            Return the string whose first letter is in uppercase and the other letters in lowercase. Strings are sequences of alphanumeric characters separated by non-alphanumeric characters.
                            
 
                          • Syntax
                            VARCHAR INITCAP(a)
                            
-
                          • Parameter description
                            • a: character string.
                            
+
                          • Parameters
                            • a: string.
                            
 
                          • Example
                            • Test statement
                              SELECT INITCAP(var1)as aa FROM T1;
                              
 
                            
 
                            • Test data and result
@@ -298,9 +298,9 @@
 
                            
 
                          
 
                          
-
                          IS_ALPHA
                          • Function
                            Checks whether a character string contains only letters.
                            
+
                            IS_ALPHA
                            • Function
                              Checks whether a string contains only letters.
                              
 
                            • Syntax
                              BOOLEAN IS_ALPHA(VARCHAR content)
                              
-
                            • Parameter description
                              • content: Enter a character string.
                              
+
                            • Parameters
                              • content: Enter a string.
                              
 
                            • Example
                              • Test statement
                                SELECT IS_ALPHA(content)  AS case_result FROM T1;
                                
 
                              • Test data and results
 
                                Table 5 Test data and results
                                Test Data (content)
                                
@@ -335,9 +335,9 @@
 
 
 
-
                                IS_DIGITS
                                • Function
                                  Checks whether a character string contains only digits.
                                  
+
                                  IS_DIGITS
                                  • Function
                                    Checks whether a string contains only digits.
                                    
 
                                  • Syntax
                                    BOOLEAN IS_DIGITS(VARCHAR content)
                                    
-
                                  • Parameter description
                                    • content: Enter a character string.
                                    
+
                                  • Parameters
                                    • content: Enter a string.
                                    
 
                                  • Example
                                    • Test statement
                                      SELECT IS_DIGITS(content) AS case_result FROM T1;
                                      
 
                                    • Test data and results
 
                                      Table 6 Test data and results
                                      Test Data (content)
                                      
@@ -377,9 +377,9 @@
 
 
 
-
                                      IS_NUMBER
                                      • Function
                                        This function is used to check whether a character string is a numeric string.
                                        
+
                                        IS_NUMBER
                                        • Function
                                          This function is used to check whether a string is a numeric one.
                                          
 
                                        • Syntax
                                          BOOLEAN IS_NUMBER(VARCHAR content)
                                          
-
                                        • Parameter description
                                          • content: Enter a character string.
                                          
+
                                        • Parameters
                                          • content: Enter a string.
                                          
 
                                        • Example
                                          • Test statement
                                            SELECT IS_NUMBER(content) AS case_result FROM T1;
                                            
 
                                          • Test data and results
 
                                            Table 7 Test data and results
                                            Test Data (content)
                                            
@@ -419,9 +419,9 @@
 
 
 
-
                                            IS_URL
                                            • Function
                                              This function is used to check whether a character string is a valid URL.
                                              
+
                                              IS_URL
                                              • Function
                                                This function is used to check whether a string is a valid URL.
                                                
 
                                              • Syntax
                                                BOOLEAN IS_URL(VARCHAR content)
                                                
-
                                              • Parameter description
                                                • content: Enter a character string.
                                                
+
                                              • Parameters
                                                • content: Enter a string.
                                                
 
                                              • Example
                                                • Test statement
                                                  SELECT IS_URL(content) AS case_result FROM T1;
                                                  
 
                                                • Test data and results
 
                                                  Table 8 Test data and results
                                                  Test Data (content)
                                                  
@@ -461,9 +461,9 @@
 
 
 
-
                                                  JSON_VALUE
                                                  • Function
                                                    Obtains the value of a specified path in a JSON character string.
                                                    
+
                                                    JSON_VALUE
                                                    • Function
                                                      Obtains the value of a specified path in a JSON string.
                                                      
 
                                                    • Syntax
                                                      VARCHAR JSON_VALUE(VARCHAR content, VARCHAR path)
                                                      
-
                                                    • Parameter description
                                                      • content: Enter a character string.
                                                      • path: path to be obtained.
                                                      
+
                                                    • Parameters
                                                      • content: Enter a string.
                                                      • path: path to be obtained.
                                                      
 
                                                    • Example
                                                      • Test statement
                                                        SELECT JSON_VALUE(content, path) AS case_result FROM T1;
                                                        
 
                                                      • Test data and results
 
                                                        Table 9 Test data and results
                                                        Test Data (content and path)
                                                        
@@ -515,7 +515,7 @@
 
 
                                                        KEY_VALUE
                                                        • Function
                                                          This function is used to obtain the value of a key in a key-value pair string.
                                                          
 
                                                        • Syntax
                                                          VARCHAR KEY_VALUE(VARCHAR content, VARCHAR split1, VARCHAR split2, VARCHAR key_name)
                                                          
-
                                                        • Parameter description
                                                          • content: Enter a character string.
                                                          • split1: separator of multiple key-value pairs.
                                                          • split2: separator between the key and value.
                                                          • key_name: name of the key to be obtained.
                                                          
+
                                                        • Parameters
                                                          • content: Enter a string.
                                                          • split1: separator of multiple key-value pairs.
                                                          • split2: separator between the key and value.
                                                          • key_name: name of the key to be obtained.
                                                          
 
                                                        • Example
                                                          • Test statement
                                                            SELECT KEY_VALUE(content, split1, split2, key_name)  AS case_result FROM T1;
                                                            
 
                                                          • Test data and results
 
                                                            Table 10 Test data and results
                                                            Test Data (content, split1, split2, and key_name)
                                                            
@@ -565,7 +565,7 @@
 
 
                                                            LOWER
                                                            • Function
                                                              Returns a string of lowercase characters.
                                                              
 
                                                            • Syntax
                                                              VARCHAR LOWER(A)
                                                              
-
                                                            • Parameter description
                                                              • A: character string.
                                                              
+
                                                            • Parameters
                                                              • A: string.
                                                              
 
                                                            • Example
                                                              • Test statement
                                                                SELECT LOWER(var1) AS aa FROM T1;
                                                                
 
                                                              • Test data and result
 
                                                                Table 11 Test data and result
                                                                Test Data (var1)
                                                                
@@ -587,7 +587,7 @@
 
 
                                                                LPAD
                                                                • Function
                                                                  Concatenates the pad string to the left of the str string until the length of the new string reaches the specified length len.
                                                                  
 
                                                                • Syntax
                                                                  VARCHAR LPAD(VARCHAR str, INT len, VARCHAR pad)
                                                                  
-
                                                                • Parameter description
                                                                  • str: character string before concatenation.
                                                                  • len: length of the concatenated character string.
                                                                  • pad: character string to be concatenated.
                                                                  
+
                                                                • Parameters
                                                                  • str: string before concatenation.
                                                                  • len: length of the concatenated string.
                                                                  • pad: string to be concatenated.
                                                                  
 
                                                                   
                                                                  • If any parameter is null, null is returned.
                                                                  • If the value of len is a negative number, value null is returned.
                                                                  • If the value of len is less than the length of str, the first chunk of str characters in len length is returned.
                                                                  
 
                                                                  
 
                                                                • Example
                                                                  • Test statement
                                                                    SELECT
@@ -600,7 +600,7 @@
 
                                                                
 
                                                                MD5
                                                                • Function
                                                                  Returns the MD5 value of a string. If the parameter is an empty string (that is, the parameter is "), an empty string is returned.
                                                                  
 
                                                                • Syntax
                                                                  VARCHAR MD5(VARCHAR str)
                                                                  
-
                                                                • Parameter description
                                                                  • str: character string
                                                                  
+
                                                                • Parameters
                                                                  • str: string
                                                                  
 
                                                                • Example
                                                                  • Test statement
                                                                    SELECT MD5("abc");
                                                                    
 
                                                                  • Test result
                                                                    "900150983cd24fb0d6963f7d28e17f72"
                                                                    
 
                                                                  
@@ -608,7 +608,7 @@
 
                                                                
 
                                                                OVERLAY
                                                                • Function
                                                                  Replaces the substring of x with y. Replaces length+1 characters starting from start_position.
                                                                  
 
                                                                • Syntax
                                                                  VARCHAR OVERLAY ( (VARCHAR x PLACING VARCHAR y FROM INT start_position [ FOR INT length ]) )
                                                                  
-
                                                                • Parameter description
                                                                  • x: character string
                                                                  • y: character string.
                                                                  • start_position: start position.
                                                                  • length (optional): indicates the character length.
                                                                  
+
                                                                • Parameters
                                                                  • x: string.
                                                                  • y: string.
                                                                  • start_position: start position.
                                                                  • length (optional): indicates the character length.
                                                                  
 
                                                                • Example
                                                                  • Test statement
                                                                    OVERLAY('abcdefg' PLACING 'xyz' FROM 2 FOR 2) AS result FROM T1;
                                                                    
 
                                                                  • Test result
 
                                                                    Table 12 Test result
                                                                    result
                                                                    
@@ -624,9 +624,9 @@
 
 
 
-
                                                                    POSITION
                                                                    • Function
                                                                      Returns the position of the first occurrence of the target string x in the queried string y. If the target character string x does not exist in the queried character string y, 0 is returned.
                                                                      
+
                                                                      POSITION
                                                                      • Function
                                                                        Returns the position of the first occurrence of the target string x in the queried string y. If the target string x does not exist in the queried string y, 0 is returned.
                                                                        
 
                                                                      • Syntax
                                                                        INTEGER POSITION(x IN y)
                                                                        
-
                                                                      • Parameter description
                                                                        • x: character string
                                                                        • y: character string.
                                                                        
+
                                                                      • Parameters
                                                                        • x: string
                                                                        • y: string.
                                                                        
 
                                                                      • Example
                                                                        • Test statement
                                                                          POSITION('in' IN 'chin') AS result FROM T1;
                                                                          
 
                                                                        • Test result
 
                                                                          Table 13 Test result
                                                                          result
                                                                          
@@ -642,9 +642,9 @@
 
 
 
-
                                                                          REPLACE
                                                                          • Function
                                                                            The character string replacement function is used to replace all str2 in the str1 string with str3.
                                                                            
+
                                                                            REPLACE
                                                                            • Function
                                                                              The string replacement function is used to replace all str2 in the str1 string with str3.
                                                                              
 
                                                                            • Syntax
                                                                              VARCHAR REPLACE(VARCHAR str1, VARCHAR str2, VARCHAR str3)
                                                                              
-
                                                                            • Parameter description
                                                                              • str1: original character.
                                                                              • str2: target character.
                                                                              • str3: replacement character.
                                                                              
+
                                                                            • Parameters
                                                                              • str1: original character.
                                                                              • str2: target character.
                                                                              • str3: replacement character.
                                                                              
 
                                                                            • Example
                                                                              • Test statement
                                                                                SELECT
   replace(
     "hello world hello world hello world",
@@ -658,7 +658,7 @@
 
                                                                                RPAD
                                                                                • Function
                                                                                  Concatenates the pad string to the right of the str string until the length of the new string reaches the specified length len.
                                                                                  
 
                                                                                  • If any parameter is null, null is returned.
                                                                                  • If the value of len is a negative number, value null is returned.
                                                                                  • The value of pad is an empty string. If the value of len is less than the length of str, the string whose length is the same as the length of str is returned.
                                                                                  
 
                                                                                • Syntax
                                                                                  VARCHAR RPAD(VARCHAR str, INT len, VARCHAR pad)
                                                                                  
-
                                                                                • Parameter description
                                                                                  • str: start character string.
                                                                                  • len: indicates the length of the new character string.
                                                                                  • pad: character string that needs to be added repeatedly.
                                                                                  
+
                                                                                • Parameters
                                                                                  • str: start string.
                                                                                  • len: length of the new string.
                                                                                  • pad: string that needs to be added repeatedly.
                                                                                  
 
                                                                                • Example
                                                                                  • Test statement
                                                                                    SELECT
   RPAD("adc", 2, "hello"),
   RPAD("adc", -1, "hello"),
@@ -669,7 +669,7 @@
 
                                                                                
 
                                                                                SHA1
                                                                                • Function
                                                                                  Returns the SHA1 value of the expr string.
                                                                                  
 
                                                                                • Syntax
                                                                                  STRING SHA1(STRING expr)
                                                                                  
-
                                                                                • Parameter description
                                                                                  • expr: character string.
                                                                                  
+
                                                                                • Parameters
                                                                                  • expr: string.
                                                                                  
 
                                                                                • Example
                                                                                  • Test statement
                                                                                    SELECT SHA1("abc");
                                                                                    
 
                                                                                  • Test result
                                                                                    "a9993e364706816aba3e25717850c26c9cd0d89d"
                                                                                    
 
                                                                                  
@@ -677,17 +677,17 @@
 
                                                                                
 
                                                                                SHA256
                                                                                • Function
                                                                                  Returns the SHA256 value of the expr string.
                                                                                  
 
                                                                                • Syntax
                                                                                  STRING SHA256(STRING expr)
                                                                                  
-
                                                                                • Parameter description
                                                                                  • expr: character string.
                                                                                  
+
                                                                                • Parameters
                                                                                  • expr: string.
                                                                                  
 
                                                                                • Example
                                                                                  • Test statement
                                                                                    SELECT SHA256("abc");
                                                                                    
 
                                                                                  • Test result
                                                                                    "ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad"
                                                                                    
 
                                                                                  
 
                                                                                
 
                                                                                
-
                                                                                STRING_TO_ARRAY
                                                                                • Function
                                                                                  Separates the value string as character string arrays by using the delimiter.
                                                                                  
+
                                                                                  STRING_TO_ARRAY
                                                                                  • Function
                                                                                    Separates the value string as string arrays by using the delimiter.
                                                                                    
 
                                                                                     
                                                                                    delimiter uses the Java regular expression. If special characters are used, they need to be escaped.
                                                                                    
 
                                                                                    
 
                                                                                  • Syntax
                                                                                    ARRAY[String] STRING_TO_ARRAY(STRING value, VARCHAR delimiter)
                                                                                    
-
                                                                                  • Parameter description
                                                                                    • value: character string.
                                                                                    • delimiter: specifies the delimiter.
                                                                                    
+
                                                                                  • Parameters
                                                                                    • value: string.
                                                                                    • delimiter: delimiter.
                                                                                    
 
                                                                                  • Example
                                                                                    • Test statement
                                                                                      SELECT
   string_to_array("127.0.0.1", "\\."),
   string_to_array("red-black-white-blue", "-");
                                                                                      
@@ -697,12 +697,12 @@
 
                                                                                  
 
                                                                                  SUBSTRING
                                                                                  • Function
                                                                                    Returns the substring that starts from a fixed position of A. The start position starts from 1.
                                                                                    
 
                                                                                    • If len is not specified, the substring from the start position to the end of the string is truncated.
                                                                                    • If len is specified, the substring starting from the position specified by start is truncated. The length is specified by len.
                                                                                    
-
                                                                                     
                                                                                    The value of start starts from 1. If the value is 0, it is regarded as 1. If the value of start is a negative number, the position is calculated from the end of the character string in reverse order.
                                                                                    
+
                                                                                     
                                                                                    The value of start starts from 1. If the value is 0, it is regarded as 1. If the value of start is a negative number, the position is calculated from the end of the string in reverse order.
                                                                                    
 
                                                                                    
 
                                                                                  • Syntax
                                                                                    VARCHAR SUBSTRING(STRING A FROM INT start) 
                                                                                    
 
                                                                                    Or
                                                                                    
 
                                                                                    VARCHAR SUBSTRING(STRING A FROM INT start FOR INT len)
                                                                                    
-
                                                                                  • Parameter description
                                                                                    • A: specified character string.
                                                                                    • start: start position for truncating the character string A.
                                                                                    • len: intercepted length.
                                                                                    
+
                                                                                  • Parameters
                                                                                    • A: specified string.
                                                                                    • start: start position for truncating the string A.
                                                                                    • len: intercepted length.
                                                                                    
 
                                                                                  • Example
                                                                                    • Test statement 1
                                                                                      SELECT SUBSTRING("123456" FROM 2);
                                                                                      
 
                                                                                    • Test result 1
                                                                                      "23456"
                                                                                      
 
                                                                                    • Test statement 2
                                                                                      SELECT SUBSTRING("123456" FROM 2 FOR 4);
                                                                                      
@@ -712,7 +712,7 @@
 
                                                                                  
 
                                                                                  TRIM
                                                                                  • Function
                                                                                    Remove A at the start position, or end position, or both the start and end positions from B. By default, string expressions A at both the start and end positions are removed.
                                                                                    
 
                                                                                  • Syntax
                                                                                    STRING TRIM( { BOTH | LEADING | TRAILING } STRING a FROM STRING b)
                                                                                    
-
                                                                                  • Parameter description
                                                                                    • a: character string.
                                                                                    • b: character string.
                                                                                    
+
                                                                                  • Parameters
                                                                                    • a: string.
                                                                                    • b: string.
                                                                                    
 
                                                                                  • Example
                                                                                    • Test statement
                                                                                      SELECT TRIM(BOTH " " FROM "  hello world  ");
                                                                                      
 
                                                                                    • Test result
                                                                                      "hello world"
                                                                                      
 
                                                                                    
@@ -720,7 +720,7 @@
 
                                                                                  
 
                                                                                  UPPER
                                                                                  • Function
                                                                                    Returns a string converted to an uppercase character.
                                                                                    
 
                                                                                  • Syntax
                                                                                    VARCHAR UPPER(A)
                                                                                    
-
                                                                                  • Parameter description
                                                                                    • A: character string.
                                                                                    
+
                                                                                  • Parameters
                                                                                    • A: string.
                                                                                    
 
                                                                                  • Example
                                                                                    • Test statement
                                                                                      SELECT UPPER("hello world");
                                                                                      
 
                                                                                    • Test result
                                                                                      "HELLO WORLD"
                                                                                      
 
                                                                                    
diff --git a/docs/dli/sqlreference/dli_08_0097.html b/docs/dli/sqlreference/dli_08_0097.html
index 88ed01b0..d249ae33 100644
--- a/docs/dli/sqlreference/dli_08_0097.html
+++ b/docs/dli/sqlreference/dli_08_0097.html
@@ -3,7 +3,7 @@
 
                                                                                    Temporal Functions
                                                                                    
 
                                                                                    Table 1 lists the time functions supported by Flink SQL.
                                                                                    
 
                                                                                    Function Description
                                                                                    
-
                                                                                    Table 1 Time Function
                                                                                    Function
                                                                                    
+
                                                                                    
@@ -98,7 +98,7 @@
 
                                                                                    Table 1 Time functions
                                                                                    Function
                                                                                    
                                                                                     		
 
                                                                                    Return Type
                                                                                    
 
                                                                                    TIME
                                                                                    
                                                                                     		
 
                                                                                    Round a time point up to the given unit.
                                                                                    
-
                                                                                    For example, 12:45:00 is returned from CEIL(TIME '12:44:31' TO MINUTE).
                                                                                    
+
                                                                                    For example, 12:45:00 is returned from CEIL(TIME '12:44:31' TO MINUTE).
                                                                                    
                                                                                     		
 
                                                                                    
 
                                                                                    QUARTER(date)
                                                                                    
diff --git a/docs/dli/sqlreference/dli_08_0098.html b/docs/dli/sqlreference/dli_08_0098.html
index 0ac5766d..dc355027 100644
--- a/docs/dli/sqlreference/dli_08_0098.html
+++ b/docs/dli/sqlreference/dli_08_0098.html
@@ -3,6 +3,9 @@
 
                                                                                    Creating a DLI Table Using the DataSource Syntax
                                                                                    
 
                                                                                    Function
                                                                                    This DataSource syntax can be used to create a DLI table. The main differences between the DataSource and the Hive syntax lie in the supported data formats and the number of supported partitions. For details, see syntax and precautions.
                                                                                    
 
                                                                                    
+
                                                                                    Precautions
                                                                                    • Table properties cannot be specified using CTAS table creation statements.
                                                                                    • If no separator is specified, a comma (,) is used by default.
                                                                                    • Instructions on using partitioned tables:
                                                                                      • When a partitioned table is created, the column specified in PARTITIONED BY must be a column in the table, and the partition type must be specified. Partition columns can only be in the string, boolean, tinyint, smallint, short, int, bigint, long, decimal, float, double, date, or timestamp format.
                                                                                      • When a partitioned table is created, the partition field must be the last one or several fields of the table field, and the sequence of the partition fields must be the same. Otherwise, an error occurs.
                                                                                      • A maximum of 200,000 partitions can be created in a single table.
                                                                                      • CTAS table creation statements cannot be used to create partitioned tables.
                                                                                      
+
                                                                                    
+
                                                                                    
 
                                                                                    Syntax
                                                                                    1
 2
 3
@@ -20,99 +23,239 @@
 
 
                                                                                    
 
-
                                                                                    Keyword
                                                                                    • IF NOT EXISTS: Prevents system errors when the created table exists.
                                                                                    • USING: Specifies the storage format.
                                                                                    • OPTIONS: Specifies the attribute name and attribute value when a table is created.
                                                                                    • COMMENT: Field or table description.
                                                                                    • PARTITIONED BY: Partition field.
                                                                                    • AS: Run the CREATE TABLE AS statement to create a table.
                                                                                    
+
                                                                                    Keywords
                                                                                    • IF NOT EXISTS: Prevents system errors when the created table exists.
                                                                                    • USING: Storage format.
                                                                                    • OPTIONS: Property name and property value when a table is created.
                                                                                    • COMMENT: Field or table description.
                                                                                    • PARTITIONED BY: Partition field.
                                                                                    • AS: Run the CREATE TABLE AS statement to create a table.
                                                                                    
 
                                                                                    
-
                                                                                    Parameter Description
                                                                                    
-
                                                                                    Table 1 Parameter description
                                                                                    Parameter
                                                                                    
+
                                                                                    Parameters
                                                                                    
+
                                                                                    
-
+
-
-
+
-
-
+
-
-
+
-
-
+
-
-
+
-
-
+
-
-
+
-
-
+
                                                                                    Table 1 Parameters
                                                                                    Parameter
                                                                                    
 
                                                                                    Description
                                                                                    
+
                                                                                    Mandatory
                                                                                    
+
                                                                                    Description
                                                                                    
                                                                                     		
 
                                                                                    
 
                                                                                    db_name
                                                                                    
+
                                                                                    db_name
                                                                                    
 
                                                                                    Database name that contains letters, digits, and underscores (_). The value cannot contain only digits and cannot start with a digit or underscore (_).
                                                                                    
+
                                                                                    No
                                                                                    
+
                                                                                    Database name
                                                                                    
+
                                                                                    The value can contain letters, numbers, and underscores (_), but it cannot contain only numbers or start with a number or underscore (_).
                                                                                    
                                                                                     		
 
                                                                                    table_name
                                                                                    
+
                                                                                    table_name
                                                                                    
 
                                                                                    Table name of a database that contains letters, digits, and underscores (_). The value cannot contain only digits and cannot start with a digit or underscore (_). The matching rule is ^(?!_)(?![0-9]+$)[A-Za-z0-9_$]*$. If special characters are required, use single quotation marks ('') to enclose them.
                                                                                    
+
                                                                                    Yes
                                                                                    
+
                                                                                    Table name in the database
                                                                                    
+
                                                                                    The value can contain letters, numbers, and underscores (_), but it cannot contain only numbers or start with a number or underscore (_). The matching rule is ^(?!_)(?![0-9]+$)[A-Za-z0-9_$]*$.
                                                                                    
+
                                                                                    Special characters must be enclosed in single quotation marks ('').
                                                                                    
+
                                                                                    The table name is case insensitive.
                                                                                    
                                                                                     		
 
                                                                                    col_name
                                                                                    
+
                                                                                    col_name
                                                                                    
 
                                                                                    Column names with data types separated by commas (,). The column name contains letters, digits, and underscores (_). It cannot contain only digits and must contain at least one letter.
                                                                                    
+
                                                                                    Yes
                                                                                    
+
                                                                                    Column names with data types separated by commas (,)
                                                                                    
+
                                                                                    The column name can contain letters, numbers, and underscores (_), but it cannot contain only numbers and must contain at least one letter.
                                                                                    
+
                                                                                    The column name is case insensitive.
                                                                                    
                                                                                     		
 
                                                                                    col_type
                                                                                    
+
                                                                                    col_type
                                                                                    
 
                                                                                    Field type
                                                                                    
+
                                                                                    Yes
                                                                                    
+
                                                                                    Data type of a column field, which is primitive.
                                                                                    
                                                                                     		
 
                                                                                    col_comment
                                                                                    
+
                                                                                    col_comment
                                                                                    
 
                                                                                    Field description
                                                                                    
+
                                                                                    No
                                                                                    
+
                                                                                    Column field description, which can only be string constants.
                                                                                    
                                                                                     		
 
                                                                                    file_format
                                                                                    
+
                                                                                    file_format
                                                                                    
 
                                                                                    Data storage format of DLI tables. The value can be parquet only.
                                                                                    
+
                                                                                    Yes
                                                                                    
+
                                                                                    Data storage format of DLI tables. The value can be parquet or orc.
                                                                                    
                                                                                     		
 
                                                                                    table_comment
                                                                                    
+
                                                                                    table_comment
                                                                                    
 
                                                                                    Table description
                                                                                    
+
                                                                                    No
                                                                                    
+
                                                                                    Table description, which can only be string constants.
                                                                                    
                                                                                     		
 
                                                                                    select_statement
                                                                                    
+
                                                                                    select_statement
                                                                                    
 
                                                                                    The CREATE TABLE AS statement is used to insert the SELECT query result of the source table or a data record to a newly created DLI table.
                                                                                    
+
                                                                                    No
                                                                                    
+
                                                                                    The CREATE TABLE AS statement is used to insert the SELECT query result of the source table or a data record to a newly created DLI table.
                                                                                    
                                                                                     		
 
                                                                                    
                                                                                     
 
                                                                                    
 
                                                                                    
 
-
                                                                                    Table 2 OPTIONS parameter description
                                                                                    Parameter
                                                                                    
+
                                                                                    
-
-
+
-
-
-
+
-
-
-
+
                                                                                    Table 2 OPTIONS parameters
                                                                                    Parameter
                                                                                    
 
                                                                                    Description
                                                                                    
+
                                                                                    Mandatory
                                                                                    
 
                                                                                    Default Value
                                                                                    
+
                                                                                    Description
                                                                                    
+
                                                                                    Default Value
                                                                                    
                                                                                     		
 
                                                                                    
 
                                                                                    multiLevelDirEnable
                                                                                    
+
                                                                                    multiLevelDirEnable
                                                                                    
 
                                                                                    Whether to iteratively query data in subdirectories. When this parameter is set to true, all files in the table path, including files in subdirectories, are iteratively read when a table is queried.
                                                                                    
+
                                                                                    No
                                                                                    
 
                                                                                    false
                                                                                    
+
                                                                                    Whether to iteratively query data in subdirectories. When this parameter is set to true, all files in the table path, including files in subdirectories, are iteratively read when a table is queried.
                                                                                    
+
                                                                                    false
                                                                                    
                                                                                     		
 
                                                                                    compression
                                                                                    
+
                                                                                    compression
                                                                                    
 
                                                                                    Specified compression format. Generally, you need to set this parameter to zstd for parquet files.
                                                                                    
+
                                                                                    No
                                                                                    
 
                                                                                    -
                                                                                    
+
                                                                                    Compression format. Generally, you need to set this parameter to zstd for parquet files.
                                                                                    
+
                                                                                    -
                                                                                    
                                                                                     		
 
                                                                                    
                                                                                     
 
                                                                                    
 
                                                                                    
 
-
                                                                                    Precautions
                                                                                    • If no delimiter is specified, the comma (,) is used by default.
                                                                                    
-
                                                                                    • When a partitioned table is created, the column specified in PARTITIONED BY must be a column in the table, and the partition type must be specified. The partition column supports only the string, boolean, tinyint, smallint, short, int, bigint, long, decimal, float, double, date, and timestamp type.
                                                                                    • When a partitioned table is created, the partition field must be the last one or several fields of the table field, and the sequence of the partition fields must be the same. Otherwise, an error occurs.
                                                                                    • A maximum of 7,000 partitions can be created in a single table.
                                                                                    • The CREATE TABLE AS statement cannot specify table attributes or create partitioned tables.
                                                                                    
-
                                                                                    
-
                                                                                    Example
                                                                                    • Create a src table that has two columns key and value in INT and STRING types respectively, and set the compression format to zstd.
                                                                                      1
                                                                                      CREATE TABLE src(key INT, value STRING) USING PARQUET OPTIONS(compression = 'zstd');
+
                                                                                      Example 1: Creating a DLI Non-Partitioned Table
                                                                                      Example description: Create a DLI non-partitioned table named table1 and use the USING keyword to set the storage format of the table to orc.
                                                                                      
+
                                                                                      You can save DLI tables in the parquet format.
                                                                                      
+
                                                                                      1
+2
+3
+4
                                                                                      CREATE TABLE IF NOT EXISTS table1 (
+    col_1 STRING,
+    col_2 INT)
+USING orc;
 
                                                                                      
 
 
                                                                                      
-
                                                                                    • Create a student table that has name, score, and classNo columns and stores data in Parquet format. Partition the table by classNo.
                                                                                      1
                                                                                      CREATE TABLE student(name STRING, score INT, classNo INT) USING PARQUET OPTIONS('key1' = 'value1') PARTITIONED BY(classNo) ;
+
                                                                                      
+
                                                                                      Example 2: Creating a DLI Partitioned Table
                                                                                      Example description: Create a partitioned table named student, which is partitioned using facultyNo and classNo.
                                                                                      
+
                                                                                      In practice, you can select a proper partitioning field and add it to the end of the PARTITIONED BY keyword.
                                                                                      
+
                                                                                      1
+2
+3
+4
+5
+6
+7
                                                                                      CREATE TABLE IF NOT EXISTS student (
+    Name        STRING,
+    facultyNo   INT,
+    classNo     INT
+)
+USING orc
+PARTITIONED BY (facultyNo, classNo);
 
                                                                                      
 
 
                                                                                      
-
                                                                                       
                                                                                      classNo is the partition field, which must be placed at the end of the table field, that is, student(name STRING, score INT, classNo INT).
                                                                                      
-
                                                                                      
-
                                                                                    • Create table t1 and insert t2 data into table t1.
                                                                                      1
                                                                                      CREATE TABLE t1 USING parquet AS select * from t2;
+
                                                                                      
+
                                                                                      Example 3: Using CTAS to Create a DLI Table Using All or Part of the Data in the Source Table
                                                                                      Example description: Based on the DLI table table1 created in Example 1: Creating a DLI Non-Partitioned Table, use the CTAS syntax to copy data from table1 to table1_ctas.
                                                                                      
+
                                                                                      When using CTAS to create a table, you can ignore the syntax used to create the table being copied. This means that regardless of the syntax used to create table1, you can use the DataSource syntax to create table1_ctas.
                                                                                      
+
                                                                                      In addition, in this example, the storage format of table1 is orc, and the storage format of table1_ctas may be orc or parquet. This means that the storage format of the table created by CTAS may be different from that of the original table.
                                                                                      
+
                                                                                      Use the SELECT statement following the AS keyword to select required data and insert the data to table1_ctas.
                                                                                      
+
                                                                                      The SELECT syntax is as follows: SELECT <Column name > FROM <Table name > WHERE <Related filter criteria>.
                                                                                      
+
                                                                                      • In this example, SELECT * FROM table1 is used. * indicates that all columns are selected from table1 and all data in table1 is inserted into table1_ctas.
                                                                                        1
+2
+3
+4
+5
                                                                                        CREATE TABLE IF NOT EXISTS table1_ctas
+USING parquet
+AS
+SELECT  *
+FROM    table1;
+
                                                                                        
+
+
                                                                                        
+
                                                                                      • To filter and insert data into table1_ctas in a customized way, you can use the following SELECT statement: SELECT col_1 FROM table1 WHERE col_1 = 'Ann'. This will allow you to select only col_1 from table1 and insert data into table1_ctas where the value equals 'Ann'.
                                                                                        1
+2
+3
+4
+5
+6
                                                                                        CREATE TABLE IF NOT EXISTS table1_ctas
+USING parquet
+AS
+SELECT  col_1
+FROM    table1
+WHERE   col_1 = 'Ann';
+
                                                                                        
+
+
                                                                                        
+
                                                                                      
+
                                                                                      
+
                                                                                      Example 4: Creating a DLI Non-Partitioned Table and Customizing the Data Type of a Column Field
                                                                                      Example description: Create a DLI non-partitioned table named table2. You can customize the native data types of column fields based on service requirements.
                                                                                      
+
                                                                                      • STRING, CHAR, or VARCHAR can be used for text characters.
                                                                                      • TIMESTAMP or DATE can be used for time characters.
                                                                                      • INT, SMALLINT/SHORT, BIGINT/LONG, or TINYINT can be used for integer characters.
                                                                                      • FLOAT, DOUBLE, or DECIMAL can be used for decimal calculation.
                                                                                      • BOOLEAN can be used if only logical switches are involved.
                                                                                      
+
                                                                                      For details, see "Data Types" > "Primitive Data Types".
                                                                                      
+
                                                                                       1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+10
+11
+12
+13
+14
+15
+16
                                                                                      CREATE TABLE IF NOT EXISTS table2 (
+    col_01  STRING,
+    col_02  CHAR (2),
+    col_03  VARCHAR (32),
+    col_04  TIMESTAMP,
+    col_05  DATE,
+    col_06  INT,
+    col_07  SMALLINT,
+    col_08  BIGINT,
+    col_09  TINYINT,
+    col_10  FLOAT,
+    col_11  DOUBLE,
+    col_12  DECIMAL (10, 3),
+    col_13  BOOLEAN
+)
+USING parquet;
+
                                                                                      
+
+
                                                                                      
+
                                                                                      
+
                                                                                      Example 5: Creating a DLI Partitioned Table and Customizing OPTIONS Parameters
                                                                                      Example description: When creating a DLI table, you can customize property names and values. For details about OPTIONS parameters, see Table 2.
                                                                                      
+
                                                                                      In this example, a DLI partitioned table named table3 is created and partitioned based on col_2. Set pmultiLevelDirEnable and compression in OPTIONS.
                                                                                      
+
                                                                                      • multiLevelDirEnable: In this example, this parameter is set to true, indicating that all files and subdirectories in the table path are read iteratively when the table is queried. If this parameter is not required, set it to false or leave it blank (the default value is false).
                                                                                      • compression: If the created OBS table needs to be compressed, you can use the keyword compression to configure the compression format. In this example, the zstd compression format is used.
                                                                                         1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+10
                                                                                        CREATE TABLE IF NOT EXISTs table3 (
+    col_1   STRING,
+    col_2   int
+)
+USING parquet
+PARTITIONED BY (col_2)
+OPTIONS (
+    multiLeveldirenable    = true,
+    compression            = 'zstd'
+);
 
                                                                                        
 
 
                                                                                        
diff --git a/docs/dli/sqlreference/dli_08_0100.html b/docs/dli/sqlreference/dli_08_0100.html
index 7d930dac..d6fc5920 100644
--- a/docs/dli/sqlreference/dli_08_0100.html
+++ b/docs/dli/sqlreference/dli_08_0100.html
@@ -10,10 +10,10 @@
 
 
                                                                                      
 
-
                                                                                      Keyword
                                                                                      • INPATH: path of data to be imported
                                                                                      • OPTIONS: list of properties
                                                                                      
+
                                                                                      Keywords
                                                                                      • INPATH: path of data to be imported
                                                                                      • OPTIONS: list of properties
                                                                                      
 
                                                                                      
-
                                                                                      Parameter
                                                                                      
-
                                                                                      Table 1 Parameter description
                                                                                      Parameter
                                                                                      
+
                                                                                      Parameters
                                                                                      
+
                                                                                      
@@ -45,7 +45,7 @@
 
                                                                                    • DELIMITER: You can specify a separator in the import statement. The default value is ,.
                                                                                      The configuration item is OPTIONS('DELIMITER'=',').
                                                                                      
 
                                                                                      For CSV data, the following delimiters are supported:
                                                                                      
 
                                                                                      • Tab character, for example, 'DELIMITER'='\t'.
                                                                                      • Any binary character, for example, 'DELIMITER'='\u0001(^A)'.
                                                                                      • Single quotation mark ('). A single quotation mark must be enclosed in double quotation marks (" "). For example, 'DELIMITER'= "'".
                                                                                      • \001(^A) and \017(^Q) are also supported, for example, 'DELIMITER'='\001(^A)' and 'DELIMITER'='\017(^Q)'.
                                                                                      
-
                                                                                    • QUOTECHAR: You can specify quotation marks in the import statement. The default value is double quotation marks (").
                                                                                      The configuration item is OPTIONS('QUOTECHAR'='"').
                                                                                      
+
                                                                                    • QUOTECHAR: You can specify quotation marks in the import statement. The default value is double quotation marks (").
                                                                                      The configuration item is OPTIONS('QUOTECHAR'='"').
                                                                                      
 
                                                                                    • COMMENTCHAR: You can specify the comment character in the import statement. During the import operation, if a comment character is at the beginning of a row, the row is considered as a comment and will not be imported. The default value is a pound key (#).
                                                                                      The configuration item is OPTIONS('COMMENTCHAR'='#').
                                                                                      
 
                                                                                    • HEADER: Indicates whether the source file contains a header. Possible values can be true and false. true indicates that the source file contains a header, and false indicates that the source file does not contain a header. The default value is false. If no header exists, specify the FILEHEADER parameter in the LOAD DATA statement to add a header.
                                                                                      The configuration item is OPTIONS('HEADER'='true').
                                                                                      
 
                                                                                    • FILEHEADER: If the source file does not contain any header, add a header to the LOAD DATA statement.
                                                                                      OPTIONS('FILEHEADER'='column1,column2')
                                                                                      
@@ -195,7 +195,7 @@
 
                                                                                      • Table 1 Parameters
                                                                                      Parameter
                                                                                      
                                                                                       		
 
                                                                                      Description
                                                                                      
 
                                                                                      
 
                                                                                      
 
                                                                                    • TIMESTAMPFORMAT: Specifies the timestamp format of a column.
                                                                                      OPTIONS('TIMESTAMPFORMAT'='timestampFormat')
                                                                                      
-
                                                                                       
                                                                                      
+
                                                                                       
                                                                                      • Default value: yyyy-MM-dd HH:mm:ss.
                                                                                      • The timestamp format is specified by the Java time pattern string. For details, see Table 3.
                                                                                      
 
                                                                                      
 
                                                                                      • 
 
                                                                                      
@@ -216,7 +216,7 @@
 
                                                                                      
 
 
                                                                                      
-
                                                                                    • To import a JSON file to a DLI table named jsontb, run the following statement:
                                                                                      1
+
                                                                                    • To import a JSON file to a DLI table named jsontb, run the following statement:
                                                                                      1
 2
                                                                                      LOAD DATA INPATH 'obs://dli/alltype.json' into table jsontb
   OPTIONS('DATA_TYPE'='json','DATEFORMAT'='yyyy/MM/dd','TIMESTAMPFORMAT'='yyyy/MM/dd HH:mm:ss');
 
                                                                                      
diff --git a/docs/dli/sqlreference/dli_08_0102.html b/docs/dli/sqlreference/dli_08_0102.html
index d3cd84bb..77adc0b7 100644
--- a/docs/dli/sqlreference/dli_08_0102.html
+++ b/docs/dli/sqlreference/dli_08_0102.html
@@ -82,7 +82,7 @@
 
 
                                                                                      
 
                                                                                      • 
-
                                                                                      Column-Based GROUP BY
                                                                                      Function
                                                                                      
+
                                                                                      Column-Based GROUP BY
                                                                                      Function
                                                                                      
 
                                                                                      This statement is used to group a table based on columns.
                                                                                      
 
                                                                                      Syntax
                                                                                      
 
                                                                                      1
@@ -109,7 +109,7 @@
 
 
                                                                                      
 
-
                                                                                      Expression-Based GROUP BY
                                                                                      Function
                                                                                      
+
                                                                                      Expression-Based GROUP BY
                                                                                      Function
                                                                                      
 
                                                                                      This statement is used to group a table according to expressions.
                                                                                      
 
                                                                                      Syntax
                                                                                      
 
                                                                                      1
@@ -127,7 +127,7 @@
 
                                                                                      Precautions
                                                                                      
 
                                                                                      None
                                                                                      
 
                                                                                      Example
                                                                                      
-
                                                                                      Use the substring function to obtain the character string from the name field, group the student table according to the obtained character string, and return each sub character string and the number of records.
                                                                                      
+
                                                                                      Use the substring function to obtain the string from the name field, group the student table according to the obtained string, and return each sub string and the number of records.
                                                                                      
 
                                                                                      1
 2
                                                                                      insert into temp SELECT substring(name,6),count(name) FROM student
   GROUP BY substring(name,6);
@@ -135,7 +135,7 @@
 
 
                                                                                      
 
-
                                                                                      GROUP BY Using HAVING
                                                                                      Function
                                                                                      
+
                                                                                      GROUP BY Using HAVING
                                                                                      Function
                                                                                      
 
                                                                                      This statement filters a table after grouping it using the HAVING clause.
                                                                                      
 
                                                                                      Syntax
                                                                                      
 
                                                                                      1
diff --git a/docs/dli/sqlreference/dli_08_0104.html b/docs/dli/sqlreference/dli_08_0104.html
index c32b9003..485b48e9 100644
--- a/docs/dli/sqlreference/dli_08_0104.html
+++ b/docs/dli/sqlreference/dli_08_0104.html
@@ -10,7 +10,7 @@
 |86   |
                                                                                      
 
                                                                                      
 
                                                                                      Common Aggregate Functions
                                                                                      
-
                                                                                      Table 1 Common aggregation functions
                                                                                      Function
                                                                                      
+
                                                                                      
diff --git a/docs/dli/sqlreference/dli_08_0105.html b/docs/dli/sqlreference/dli_08_0105.html
index f377aa39..3957d04a 100644
--- a/docs/dli/sqlreference/dli_08_0105.html
+++ b/docs/dli/sqlreference/dli_08_0105.html
@@ -8,10 +8,10 @@
 
 
-
                                                                                      Keyword
                                                                                      • EXTENDED: displays all metadata of the specified table. It is used during debugging in general.
                                                                                      • FORMATTED: displays all metadata of the specified table in a form.
                                                                                      
+
                                                                                      Keywords
                                                                                      • EXTENDED: displays all metadata of the specified table. It is used during debugging in general.
                                                                                      • FORMATTED: displays all metadata of the specified table in a form.
                                                                                      
 
                                                                                      
 
                                                                                      Parameters
                                                                                      
-
                                                                                      Table 1 Common aggregate functions
                                                                                      Function
                                                                                      
                                                                                       		
 
                                                                                      Return Data Type
                                                                                      
                                                                                       		
 
                                                                                      Table 1 Parameter description
                                                                                      Parameter
                                                                                      
+
                                                                                      
diff --git a/docs/dli/sqlreference/dli_08_0108.html b/docs/dli/sqlreference/dli_08_0108.html
index 2e621783..20f412cf 100644
--- a/docs/dli/sqlreference/dli_08_0108.html
+++ b/docs/dli/sqlreference/dli_08_0108.html
@@ -41,7 +41,7 @@
 
                                                                                      • Logically partition and order the data that is used in the MATCH_RECOGNIZE clause with its PARTITION BY and ORDER BY clauses.
                                                                                      • Define patterns of rows to seek using the PATTERN clause of the MATCH_RECOGNIZE clause. These patterns use regular expression syntax.
                                                                                      • Specify the logical conditions required to map a row to a row pattern variable in the DEFINE clause.
                                                                                      • Define measures, which are expressions usable in other parts of the SQL query, in the MEASURES clause.
                                                                                      
-
                                                                                      Syntax description
                                                                                      
+
                                                                                      Syntax Description
                                                                                      
 
                                                                                      Table 1 Parameters
                                                                                      Parameter
                                                                                      
                                                                                       		
 
                                                                                      Description
                                                                                      
                                                                                       		
 
 
                                                                                      Table 1 Syntax description
                                                                                      Parameter
                                                                                      
                                                                                       		
 
                                                                                      Mandatory
                                                                                      
diff --git a/docs/dli/sqlreference/dli_08_0110.html b/docs/dli/sqlreference/dli_08_0110.html
index 285dc8dd..9d669425 100644
--- a/docs/dli/sqlreference/dli_08_0110.html
+++ b/docs/dli/sqlreference/dli_08_0110.html
@@ -11,8 +11,8 @@
 
                                                                                       
                                                                                      • The anomaly score returned by the function is a DOUBLE value in the range of [0, 1].
                                                                                      • The field names must be of the same type. If the field types are different, you can use the CAST function to escape the field names, for example, [a, CAST(b as DOUBLE)].
                                                                                      • The syntax of the optional parameter list is as follows: "key1=value,key2=value2,..."
                                                                                      
 
                                                                                      
 
-
                                                                                      Parameter Description
                                                                                      
-
                                                                                      Table 1 Parameter Description
                                                                                      Parameter
                                                                                      
+
                                                                                      Parameters
                                                                                      
+
                                                                                      
diff --git a/docs/dli/sqlreference/dli_08_0111.html b/docs/dli/sqlreference/dli_08_0111.html
index 10ab8ed1..b3de9557 100644
--- a/docs/dli/sqlreference/dli_08_0111.html
+++ b/docs/dli/sqlreference/dli_08_0111.html
@@ -20,7 +20,7 @@
 
 
 
-
                                                                                      Table 1 Parameters
                                                                                      Parameter
                                                                                      
                                                                                       		
 
                                                                                      Mandatory
                                                                                      
 
                                                                                      Table 1 Parameter Description
                                                                                      Parameter
                                                                                      
+
                                                                                      
@@ -82,7 +82,7 @@
 
 
 
-
                                                                                      Table 1 Parameters
                                                                                      Parameter
                                                                                      
                                                                                       		
 
                                                                                      Mandatory
                                                                                      
 
                                                                                      Table 2 Parameter Description
                                                                                      Parameter
                                                                                      
+
                                                                                      
diff --git a/docs/dli/sqlreference/dli_08_0112.html b/docs/dli/sqlreference/dli_08_0112.html
index 72217190..44347641 100644
--- a/docs/dli/sqlreference/dli_08_0112.html
+++ b/docs/dli/sqlreference/dli_08_0112.html
@@ -7,7 +7,7 @@
 
                                                                                      Precautions
                                                                                      • If the input is NULL, NULL is returned.
                                                                                      • Flink jobs do not support the conversion of bigint to timestamp using CAST. You can convert it using to_timestamp or to_localtimestamp.
                                                                                      
 
                                                                                      
-
                                                                                      Example
                                                                                      Convert amount into a character string. The specified length of the string is invalid after the conversion.
                                                                                      
+
                                                                                      Example
                                                                                      Convert amount into a string. The specified length of the string is invalid after the conversion.
                                                                                      
 
                                                                                      insert into temp select cast(amount as VARCHAR(10)) from source_stream;
                                                                                      
 
                                                                                      
 
                                                                                      Common Type Conversion Functions
                                                                                      
diff --git a/docs/dli/sqlreference/dli_08_0119.html b/docs/dli/sqlreference/dli_08_0119.html
index 4b9903a1..2d65a6f0 100644
--- a/docs/dli/sqlreference/dli_08_0119.html
+++ b/docs/dli/sqlreference/dli_08_0119.html
@@ -2,6 +2,8 @@
 
 
                                                                                      Creating a DLI Table and Associating It with HBase
                                                                                      
 
                                                                                      Function
                                                                                      This statement is used to create a DLI table and associate it with an existing HBase table.
                                                                                      
+
                                                                                       
                                                                                      In Spark cross-source development scenarios, there is a risk of password leakage if datasource authentication information is directly configured. You are advised to use the datasource authentication provided by DLI.
                                                                                      
+
                                                                                      
 
                                                                                      
 
                                                                                      Prerequisites
                                                                                      • Before creating a DLI table and associating it with HBase, you need to create a datasource connection. For details about operations on the management console, see 
                                                                                      • Ensure that the /etc/hosts information of the master node in the MRS cluster is added to the host file of the DLI queue.
                                                                                        For details about how to add an IP-domain mapping, see Enhanced Datasource Connection in the Data Lake Insight User Guide.
                                                                                        
 
                                                                                      • The syntax is not supported for security clusters.
                                                                                      
@@ -48,8 +50,8 @@
 
                                                                                      
 
 
                                                                                      
-
                                                                                      Keyword
                                                                                      
-
                                                                                      Table 2 Parameters
                                                                                      Parameter
                                                                                      
                                                                                       		
 
                                                                                      Mandatory
                                                                                      
                                                                                       		
 
                                                                                      Table 1 CREATE TABLE parameter description
                                                                                      Parameter
                                                                                      
+
                                                                                      Keywords
                                                                                      
+
                                                                                      
diff --git a/docs/dli/sqlreference/dli_08_0120.html b/docs/dli/sqlreference/dli_08_0120.html
index 9a57ab5d..61b05186 100644
--- a/docs/dli/sqlreference/dli_08_0120.html
+++ b/docs/dli/sqlreference/dli_08_0120.html
@@ -29,8 +29,8 @@
 
                                                                                      Keywords
                                                                                      For details about the SELECT keywords, see Basic SELECT Statements.
                                                                                      
 
                                                                                      
-
                                                                                      Parameter description
                                                                                      
-
                                                                                      Table 1 CREATE TABLE keywords
                                                                                      Parameter
                                                                                      
                                                                                       		
 
                                                                                      Description
                                                                                      
                                                                                       		
 
                                                                                      Table 1 Parameter description
                                                                                      Parameter
                                                                                      
+
                                                                                      Parameters
                                                                                      
+
                                                                                      
@@ -70,7 +70,7 @@
 
                                                                                      Table 1 Parameters
                                                                                      Parameter
                                                                                      
                                                                                       		
 
                                                                                      Description
                                                                                      
 
                                                                                      
 
                                                                                      
 
                                                                                      
-
                                                                                      Precautions
                                                                                      • The target DLI table must exist.
                                                                                      • In the column family created in Creating a Table and Associating It with HBase, if the column family specified by Cols in OPTIONS does not exist, an error is reported when INSERT INTO is executed.
                                                                                      • If the row key, column family, or column you need to insert to the HBase table already exists, the existing data in HBase table will be overwritten.
                                                                                      • You are advised not to concurrently insert data into a table. If you concurrently insert data into a table, there is a possibility that conflicts occur, leading to failed data insertion.
                                                                                      • INSERT OVERWRITE is not supported.
                                                                                      
+
                                                                                      Precautions
                                                                                      • A DLI table is available.
                                                                                      • In the column family created in Creating a Table and Associating It with HBase, if the column family specified by Cols in OPTIONS does not exist, an error is reported when INSERT INTO is executed.
                                                                                      • If the row key, column family, or column you need to insert to the HBase table already exists, the existing data in HBase table will be overwritten.
                                                                                      • You are advised not to concurrently insert data into a table. If you concurrently insert data into a table, there is a possibility that conflicts occur, leading to failed data insertion.
                                                                                      • INSERT OVERWRITE is not supported.
                                                                                      
 
                                                                                      
 
                                                                                      Example
                                                                                      • Query data in the user table and insert the data into the test table.
                                                                                        1
 2
diff --git a/docs/dli/sqlreference/dli_08_0121.html b/docs/dli/sqlreference/dli_08_0121.html
index 4019514a..0aa7592a 100644
--- a/docs/dli/sqlreference/dli_08_0121.html
+++ b/docs/dli/sqlreference/dli_08_0121.html
@@ -7,7 +7,7 @@
 
 
                                                                                        
 
-
                                                                                        Keyword
                                                                                        LIMIT is used to limit the query results. Only INT type is supported by the number parameter.
                                                                                        
+
                                                                                        Keywords
                                                                                        LIMIT is used to limit the query results. Only INT type is supported by the number parameter.
                                                                                        
 
                                                                                        
 
                                                                                        Precautions
                                                                                        The table to be queried must exist. Otherwise, an error is reported.
                                                                                        
 
                                                                                        
diff --git a/docs/dli/sqlreference/dli_08_0122.html b/docs/dli/sqlreference/dli_08_0122.html
index fefe1a2f..c07d2ece 100644
--- a/docs/dli/sqlreference/dli_08_0122.html
+++ b/docs/dli/sqlreference/dli_08_0122.html
@@ -18,8 +18,8 @@
 
 
                                                                                        
 
-
                                                                                        Keyword
                                                                                        
-
                                                                                        Table 1 CREATE TABLE parameter description
                                                                                        Parameter
                                                                                        
+
                                                                                        Keywords
                                                                                        
+
                                                                                        
diff --git a/docs/dli/sqlreference/dli_08_0123.html b/docs/dli/sqlreference/dli_08_0123.html
index 1649663c..9daafad4 100644
--- a/docs/dli/sqlreference/dli_08_0123.html
+++ b/docs/dli/sqlreference/dli_08_0123.html
@@ -14,8 +14,8 @@
 
 
-
                                                                                        Keyword
                                                                                        
-
                                                                                        Table 1 CREATE TABLE keywords
                                                                                        Parameter
                                                                                        
                                                                                         		
 
                                                                                        Description
                                                                                        
                                                                                         		
 
                                                                                        Table 1 INSERT INTO parameter description
                                                                                        Parameter
                                                                                        
+
                                                                                        Keywords
                                                                                        
+
                                                                                        
diff --git a/docs/dli/sqlreference/dli_08_0124.html b/docs/dli/sqlreference/dli_08_0124.html
index fdd325d0..cc133c74 100644
--- a/docs/dli/sqlreference/dli_08_0124.html
+++ b/docs/dli/sqlreference/dli_08_0124.html
@@ -9,7 +9,7 @@
 
 
-
                                                                                        Keyword
                                                                                        LIMIT is used to limit the query results. Only INT type is supported by the number parameter.
                                                                                        
+
                                                                                        Keywords
                                                                                        LIMIT is used to limit the query results. Only INT type is supported by the number parameter.
                                                                                        
 
                                                                                        
 
                                                                                        Precautions
                                                                                        The table to be queried must exist. Otherwise, an error is reported.
                                                                                        
 
                                                                                        
diff --git a/docs/dli/sqlreference/dli_08_0125.html b/docs/dli/sqlreference/dli_08_0125.html
index c7223e8e..a7d4d2c7 100644
--- a/docs/dli/sqlreference/dli_08_0125.html
+++ b/docs/dli/sqlreference/dli_08_0125.html
@@ -1,7 +1,7 @@
 
 
 
                                                                                        Reserved Keywords
                                                                                        
-
                                                                                        Flink SQL reserves some strings as keywords. If you want to use the following character strings as field names, ensure that they are enclosed by back quotes, for example, `value` and `count`.
                                                                                        
+
                                                                                        Flink SQL reserves some strings as keywords. If you want to use the following strings as field names, ensure that they are enclosed by back quotes, for example, `value` and `count`.
                                                                                        
 
                                                                                        A
                                                                                        • A
                                                                                        • ABS
                                                                                        • ABSOLUTE
                                                                                        • ACTION
                                                                                        • ADA
                                                                                        • ADD
                                                                                        • ADMIN
                                                                                        • AFTER
                                                                                        • AK
                                                                                        • ALL
                                                                                        • ALLOCATE
                                                                                        • ALLOW
                                                                                        • ALTER
                                                                                        • ALWAYS
                                                                                        • AND
                                                                                        • ANY
                                                                                        • APPEND
                                                                                        • APP_ID
                                                                                        • ARE
                                                                                        • ARRAY
                                                                                        • ARRAY_BRACKET
                                                                                        • AS
                                                                                        • ASC
                                                                                        • ASENSITIVE
                                                                                        • ASSERTION
                                                                                        • ASSIGNMENT
                                                                                        • ASYMMETRIC
                                                                                        • AT
                                                                                        • AT_LEAST_ONCE
                                                                                        • ATOMIC
                                                                                        • ATTRIBUTE
                                                                                        • ATTRIBUTES
                                                                                        • AUTHORIZATION
                                                                                        • AVG
                                                                                        • AVRO_CONFIG
                                                                                        • AVRO_DATA
                                                                                        • AVRO_SCHEMA
                                                                                        
 
                                                                                        
 
                                                                                        B
                                                                                        • BATCH_INSERT_DATA_NUM
                                                                                        • BEFORE
                                                                                        • BEGIN
                                                                                        • BERNOULLI
                                                                                        • BETWEEN
                                                                                        • BIGINT
                                                                                        • BINARY
                                                                                        • BIT
                                                                                        • BLOB
                                                                                        • BOOL
                                                                                        • BOOLEAN
                                                                                        • BOTH
                                                                                        • BREADTH
                                                                                        • BUCKET
                                                                                        • BY
                                                                                        
diff --git a/docs/dli/sqlreference/dli_08_0130.html b/docs/dli/sqlreference/dli_08_0130.html
index b60fbfad..ba6cafaf 100644
--- a/docs/dli/sqlreference/dli_08_0130.html
+++ b/docs/dli/sqlreference/dli_08_0130.html
@@ -8,9 +8,10 @@
 
 
                                                                                        
 
                                                                                        
-
                                                                                        Keyword
                                                                                        • CREATE VIEW: creates views based on the given select statement. The result of the select statement will not be written into the disk.
                                                                                        • OR REPLACE: updates views using the select statement. No error is reported and the view definition is updated using the SELECT statement if a view exists.
                                                                                        
+
                                                                                        Keywords
                                                                                        • CREATE VIEW: creates views based on the given select statement. The result of the select statement will not be written into the disk.
                                                                                        • OR REPLACE: updates views using the select statement. No error is reported and the view definition is updated using the SELECT statement if a view exists.
                                                                                        
 
                                                                                        
-
                                                                                        Precautions
                                                                                        • The view to be created must not exist in the current database. Otherwise, an error will be reported. When the view exists, you can add keyword OR REPLACE to avoid the error message.
                                                                                        • The table or view information contained in the view cannot be modified. If the table or view information is modified, the query may fail.
                                                                                        
+
                                                                                        Precautions
                                                                                        • The view to be created must not exist in the current database. Otherwise, an error will be reported. When the view exists, you can add keyword OR REPLACE to avoid the error message.
                                                                                        • The table or view information contained in the view cannot be modified. If the table or view information is modified, the query may fail.
                                                                                        • If the compute engines used for creating tables and views are different, the view query may fail due to incompatible varchar types.
                                                                                          For example, if a table is created using Spark 3.x, you are advised to use Spark 2.x to create a view.
                                                                                          
+
                                                                                        
 
                                                                                        
 
                                                                                        Example
                                                                                        To create a view named student_view for the queried ID and name of the student table, run the following statement:
                                                                                        
 
                                                                                        Table 1 INSERT INTO keywords
                                                                                        Parameter
                                                                                        
                                                                                         		
 
                                                                                        Description
                                                                                        
                                                                                         		
 
                                                                                        1
                                                                                        CREATE VIEW student_view AS SELECT id, name FROM student;
diff --git a/docs/dli/sqlreference/dli_08_0131.html b/docs/dli/sqlreference/dli_08_0131.html
index 0f5ce938..a788c064 100644
--- a/docs/dli/sqlreference/dli_08_0131.html
+++ b/docs/dli/sqlreference/dli_08_0131.html
@@ -8,7 +8,7 @@
 
 
                                                                                        
 
-
                                                                                        Keyword
                                                                                        DROP: Deletes the metadata of a specified view. Although views and tables have many common points, the DROP TABLE statement cannot be used to delete views. 
                                                                                        
+
                                                                                        Keywords
                                                                                        DROP: Deletes the metadata of a specified view. Although views and tables have many common points, the DROP TABLE statement cannot be used to delete views. 
                                                                                        
 
                                                                                        
 
                                                                                        Precautions
                                                                                        The to-be-deleted view must exist. If you run this statement to delete a view that does not exist, an error is reported. To avoid such an error, you can add IF EXISTS in this statement. 
                                                                                        
 
                                                                                        
diff --git a/docs/dli/sqlreference/dli_08_0138.html b/docs/dli/sqlreference/dli_08_0138.html
index 4c3ca3e7..aeaeb47c 100644
--- a/docs/dli/sqlreference/dli_08_0138.html
+++ b/docs/dli/sqlreference/dli_08_0138.html
@@ -8,7 +8,7 @@
 
 
                                                                                        
 
-
                                                                                        Keyword
                                                                                        EXTENDED: After this keyword is specified, the logical and physical plans are outputted at the same time.
                                                                                        
+
                                                                                        Keywords
                                                                                        EXTENDED: After this keyword is specified, the logical and physical plans are outputted at the same time.
                                                                                        
 
                                                                                        CODEGEN: After this keyword is specified, code generated by using the Codegen is also outputted.
                                                                                        
 
                                                                                        
 
                                                                                        Precautions
                                                                                        None
                                                                                        
diff --git a/docs/dli/sqlreference/dli_08_0139.html b/docs/dli/sqlreference/dli_08_0139.html
index c8c69a26..ba52fad8 100644
--- a/docs/dli/sqlreference/dli_08_0139.html
+++ b/docs/dli/sqlreference/dli_08_0139.html
@@ -20,7 +20,7 @@
 
 
                                                                                      • Revoking a Permission
                                                                                        
 
                                                                                        • 
-
                                                                                      • Displaying the Granted Permissions
                                                                                        
+
                                                                                      • Showing Granted Permissions
                                                                                        
 
                                                                                        • 
 
                                                                                      • Displaying the Binding Relationship Between All Roles and Users
                                                                                        
 
                                                                                        • 
diff --git a/docs/dli/sqlreference/dli_08_0141.html b/docs/dli/sqlreference/dli_08_0141.html
index b3eb8af8..f694fe1d 100644
--- a/docs/dli/sqlreference/dli_08_0141.html
+++ b/docs/dli/sqlreference/dli_08_0141.html
@@ -8,7 +8,7 @@
 
 
                                                                                        
 
                                                                                        
-
                                                                                        Keyword
                                                                                        None
                                                                                        
+
                                                                                        Keywords
                                                                                        None
                                                                                        
 
                                                                                        
 
                                                                                        Precautions
                                                                                        • The role_name to be created must not exist in the current database or the specified database. Otherwise, an error will be reported.
                                                                                        • If db_name is not specified, the role is created in the current database.
                                                                                        
 
                                                                                        
diff --git a/docs/dli/sqlreference/dli_08_0142.html b/docs/dli/sqlreference/dli_08_0142.html
index e0c731de..aa8094ff 100644
--- a/docs/dli/sqlreference/dli_08_0142.html
+++ b/docs/dli/sqlreference/dli_08_0142.html
@@ -8,7 +8,7 @@
 
 
                                                                                        
 
-
                                                                                        Keyword
                                                                                        None
                                                                                        
+
                                                                                        Keywords
                                                                                        None
                                                                                        
 
                                                                                        
 
                                                                                        Precautions
                                                                                        The role_name and username must exist. Otherwise, an error will be reported.
                                                                                        
 
                                                                                        
diff --git a/docs/dli/sqlreference/dli_08_0143.html b/docs/dli/sqlreference/dli_08_0143.html
index 5e4c7965..fcc36a59 100644
--- a/docs/dli/sqlreference/dli_08_0143.html
+++ b/docs/dli/sqlreference/dli_08_0143.html
@@ -8,7 +8,7 @@
 
 
                                                                                        
 
-
                                                                                        Keyword
                                                                                        ALL: Displays all roles.
                                                                                        
+
                                                                                        Keywords
                                                                                        ALL: Displays all roles.
                                                                                        
 
                                                                                        
 
                                                                                        Precautions
                                                                                        Keywords ALL and user_name cannot coexist.
                                                                                        
 
                                                                                        
diff --git a/docs/dli/sqlreference/dli_08_0144.html b/docs/dli/sqlreference/dli_08_0144.html
index 7344fc4b..81a7441f 100644
--- a/docs/dli/sqlreference/dli_08_0144.html
+++ b/docs/dli/sqlreference/dli_08_0144.html
@@ -8,7 +8,7 @@
 
 
                                                                                        
 
-
                                                                                        Keyword
                                                                                        ROLE: The subsequent role_name must be a role.
                                                                                        
+
                                                                                        Keywords
                                                                                        ROLE: The subsequent role_name must be a role.
                                                                                        
 
                                                                                        USER: The subsequent user_name must be a user.
                                                                                        
 
                                                                                        
 
                                                                                        Precautions
                                                                                        • The privilege must be one of the authorizable permissions. If the object has the corresponding permission on the resource or the upper-level resource, the permission fails to be granted. For details about the permission types supported by the privilege, see Data Permissions List.
                                                                                        • The resource can be a queue, database, table, view, or column. The formats are as follows:
                                                                                          • Queue format: queues.queue_name
                                                                                            The following table lists the permission types supported by a queue.
                                                                                            
diff --git a/docs/dli/sqlreference/dli_08_0145.html b/docs/dli/sqlreference/dli_08_0145.html
index ede38800..a35d10d4 100644
--- a/docs/dli/sqlreference/dli_08_0145.html
+++ b/docs/dli/sqlreference/dli_08_0145.html
@@ -1,15 +1,14 @@
 
 
-
                                                                                            Displaying the Granted Permissions
                                                                                            
-
                                                                                            Function
                                                                                            This statement is used to show the permissions granted to a user or role in the resource.
                                                                                            
+
                                                                                            Showing Granted Permissions
                                                                                            
+
                                                                                            Function
                                                                                            This statement is used to show the permissions granted to a user on a resource.
                                                                                            
 
                                                                                            
-
                                                                                            Syntax
                                                                                            1
                                                                                            SHOW GRANT ((ROLE [db_name].role_name) | (USER user_name)) ON resource;
+
                                                                                            Syntax
                                                                                            1
                                                                                            SHOW GRANT USER user_name ON resource;
 
                                                                                            
 
 
                                                                                            
 
                                                                                            
-
                                                                                            Keyword
                                                                                            ROLE: The subsequent role_name must be a role.
                                                                                            
-
                                                                                            USER: The subsequent user_name must be a user.
                                                                                            
+
                                                                                            Keywords
                                                                                            USER: The subsequent user_name must be a user.
                                                                                            
 
                                                                                            
 
                                                                                            Precautions
                                                                                            The resource can be a queue, database, table, view, or column. The formats are as follows:
                                                                                            
 
                                                                                            • Queue format: queues.queue_name
                                                                                            • Database format: databases.db_name
                                                                                            • Table format: databases.db_name.tables.table_name
                                                                                            • Column format: databases.db_name.tables.table_name.columns.column_name
                                                                                            • View format: databases.db_name.tables.view_name
                                                                                            
@@ -18,11 +17,6 @@
 
                                                                                            1
                                                                                            SHOW GRANT USER user_name1 ON databases.db1;
 
                                                                                            
 
-
                                                                                            
-
                                                                                            Run the following statement to show permissions of role_name on table tb1 in the db1 database:
                                                                                            
-
                                                                                            1
                                                                                            SHOW GRANT ROLE role_name ON databases.db1.tables.tb1;
-
                                                                                            
-
 
                                                                                            
 
                                                                                            
 
                                                                                            
diff --git a/docs/dli/sqlreference/dli_08_0146.html b/docs/dli/sqlreference/dli_08_0146.html
index 28d3434e..8492e8af 100644
--- a/docs/dli/sqlreference/dli_08_0146.html
+++ b/docs/dli/sqlreference/dli_08_0146.html
@@ -8,7 +8,7 @@
 
 
                                                                                            
 
-
                                                                                            Keyword
                                                                                            ROLE: The subsequent role_name must be a role.
                                                                                            
+
                                                                                            Keywords
                                                                                            ROLE: The subsequent role_name must be a role.
                                                                                            
 
                                                                                            USER: The subsequent user_name must be a user.
                                                                                            
 
                                                                                            
 
                                                                                            Precautions
                                                                                            • The privilege must be the granted permissions of the authorized object in the resource. Otherwise, the permission fails to be revoked. For details about the permission types supported by the privilege, see Data Permissions List.
                                                                                            • The resource can be a queue, database, table, view, or column. The formats are as follows:
                                                                                              • Queue format: queues.queue_name
                                                                                              • Database format: databases.db_name
                                                                                              • Table format: databases.db_name.tables.table_name
                                                                                              • View format: databases.db_name.tables.view_name
                                                                                              • Column format: databases.db_name.tables.table_name.columns.column_name
                                                                                              
@@ -19,12 +19,12 @@
 
                                                                                            
 
 
                                                                                            
-
                                                                                            To revoke the SELECT permission of user user_name1 on table tb1 in database db1, run the following statement:
                                                                                            
+
                                                                                            To revoke the SELECT permission of user user_name1 on table tb1 in database db1, run the following statement:
                                                                                            
 
                                                                                            1
                                                                                            REVOKE SELECT ON databases.db1.tables.tb1 FROM USER user_name1;
 
                                                                                            
 
 
                                                                                            
-
                                                                                            To revoke the SELECT permission of role role_name on table tb1 in database db1, run the following statement:
                                                                                            
+
                                                                                            To revoke the SELECT permission of role role_name on table tb1 in database db1, run the following statement:
                                                                                            
 
                                                                                            1
                                                                                            REVOKE SELECT ON databases.db1.tables.tb1 FROM ROLE role_name;
 
                                                                                            
 
diff --git a/docs/dli/sqlreference/dli_08_0147.html b/docs/dli/sqlreference/dli_08_0147.html
index d2d840ea..bfbb9072 100644
--- a/docs/dli/sqlreference/dli_08_0147.html
+++ b/docs/dli/sqlreference/dli_08_0147.html
@@ -8,7 +8,7 @@
 
 
                                                                                            
 
                                                                                            
-
                                                                                            Keyword
                                                                                            None
                                                                                            
+
                                                                                            Keywords
                                                                                            None
                                                                                            
 
                                                                                            
 
                                                                                            Precautions
                                                                                            role_name and user_name must exist and user_name has been bound to role_name.
                                                                                            
 
                                                                                            
diff --git a/docs/dli/sqlreference/dli_08_0148.html b/docs/dli/sqlreference/dli_08_0148.html
index 19a64a27..22e047cc 100644
--- a/docs/dli/sqlreference/dli_08_0148.html
+++ b/docs/dli/sqlreference/dli_08_0148.html
@@ -8,7 +8,7 @@
 
 
                                                                                            
 
                                                                                            
-
                                                                                            Keyword
                                                                                            None
                                                                                            
+
                                                                                            Keywords
                                                                                            None
                                                                                            
 
                                                                                            
 
                                                                                            Precautions
                                                                                            • The role_name to be deleted must exist in the current database or the specified database. Otherwise, an error will be reported.
                                                                                            • If db_name is not specified, the role is deleted in the current database.
                                                                                            
 
                                                                                            
diff --git a/docs/dli/sqlreference/dli_08_0149.html b/docs/dli/sqlreference/dli_08_0149.html
index 2d5ef5f4..b81f597b 100644
--- a/docs/dli/sqlreference/dli_08_0149.html
+++ b/docs/dli/sqlreference/dli_08_0149.html
@@ -8,7 +8,7 @@
 
 
                                                                                            
 
                                                                                            
-
                                                                                            Keyword
                                                                                            None
                                                                                            
+
                                                                                            Keywords
                                                                                            None
                                                                                            
 
                                                                                            
 
                                                                                            Precautions
                                                                                            The ROLE variable must exist.
                                                                                            
 
                                                                                            
diff --git a/docs/dli/sqlreference/dli_08_0150.html b/docs/dli/sqlreference/dli_08_0150.html
index 1fe83967..c66c8af5 100644
--- a/docs/dli/sqlreference/dli_08_0150.html
+++ b/docs/dli/sqlreference/dli_08_0150.html
@@ -20,8 +20,8 @@
 
 
                                                                                            
 
                                                                                            
-
                                                                                            Keyword
                                                                                            
-
                                                                                            Table 1 SELECT parameter description
                                                                                            Parameter
                                                                                            
+
                                                                                            Keywords
                                                                                            
+
                                                                                            
diff --git a/docs/dli/sqlreference/dli_08_0160.html b/docs/dli/sqlreference/dli_08_0160.html
index 714e5ef6..58e856a4 100644
--- a/docs/dli/sqlreference/dli_08_0160.html
+++ b/docs/dli/sqlreference/dli_08_0160.html
@@ -10,7 +10,7 @@
 
 
-
                                                                                            Keyword
                                                                                            Column-based GROUP BY can be categorized into single-column GROUP BY and multi-column GROUP BY.
                                                                                            
+
                                                                                            Keywords
                                                                                            Column-based GROUP BY can be categorized into single-column GROUP BY and multi-column GROUP BY.
                                                                                            
 
                                                                                            • Single-column GROUP BY indicates that the GROUP BY clause contains only one column. The fields in col_name_list must exist in attr_expr_list. The aggregate function, count() and sum() for example, is supported in attr_expr_list. The aggregate function can contain other fields.
                                                                                            • Multi-column GROUP BY indicates that there is more than one column in the GROUP BY clause. The query statement is grouped according to all the fields in the GROUP BY clause. The records with the same fields are put in the same group. Similarly, the fields in the GROUP BY clause must be in the fields in attr_expr_list. The attr_expr_list field can also use the aggregate function.
                                                                                            
 
                                                                                            
 
                                                                                            Precautions
                                                                                            The to-be-grouped table must exist. Otherwise, an error is reported.
                                                                                            
diff --git a/docs/dli/sqlreference/dli_08_0161.html b/docs/dli/sqlreference/dli_08_0161.html
index 30b0e79c..0c6ead91 100644
--- a/docs/dli/sqlreference/dli_08_0161.html
+++ b/docs/dli/sqlreference/dli_08_0161.html
@@ -10,11 +10,11 @@
 
 
                                                                                            
 
                                                                                            
-
                                                                                            Keyword
                                                                                            The groupby_expression can contain a single field or multiple fields, and also can call aggregate functions or string functions. 
                                                                                            
+
                                                                                            Keywords
                                                                                            The groupby_expression can contain a single field or multiple fields, and also can call aggregate functions or string functions. 
                                                                                            
 
                                                                                            
-
                                                                                            Precautions
                                                                                            • The to-be-grouped table must exist. Otherwise, an error is reported.
                                                                                            • In the same single-column group, built-in functions and self-defined functions are supported in the expression in the GRUOP BY fields that must exit in attr_expr_list.
                                                                                            
+
                                                                                            Precautions
                                                                                            • The to-be-grouped table must exist. Otherwise, an error is reported.
                                                                                            • In the same single-column group, built-in functions and self-defined functions are supported in the expression in the GRUOP BY fields that must exit in attr_expr_list.
                                                                                            
 
                                                                                            
-
                                                                                            Example
                                                                                            To use the substr function to obtain the character string from the name field, group the student table according to the obtained character string, and return each sub character string and the number of records, run the following statement: 
                                                                                            
+
                                                                                            Example
                                                                                            To use the substr function to obtain the string from the name field, group the student table according to the obtained string, and return each sub string and the number of records, run the following statement: 
                                                                                            
 
                                                                                            Table 1 SELECT keywords
                                                                                            Parameter
                                                                                            
                                                                                             		
 
                                                                                            Description
                                                                                            
                                                                                             		
 
                                                                                            1
 2
                                                                                            SELECT substr(name,6),count(name) FROM student
   GROUP BY substr(name,6);
diff --git a/docs/dli/sqlreference/dli_08_0185.html b/docs/dli/sqlreference/dli_08_0185.html
index 278f6fb7..a987703b 100644
--- a/docs/dli/sqlreference/dli_08_0185.html
+++ b/docs/dli/sqlreference/dli_08_0185.html
@@ -8,7 +8,7 @@
 
 
                                                                                            
 
-
                                                                                            Keyword
                                                                                            EXCEPT minus the sets. A EXCEPT B indicates to remove the records that exist in both A and B from A and return the results. The repeated records returned by EXCEPT are not removed by default. The number of columns returned by each SELECT statement must be the same. The types and names of columns do not have to be the same. 
                                                                                            
+
                                                                                            Keywords
                                                                                            EXCEPT minus the sets. A EXCEPT B indicates to remove the records that exist in both A and B from A and return the results. The repeated records returned by EXCEPT are not removed by default. The number of columns returned by each SELECT statement must be the same. The types and names of columns do not have to be the same. 
                                                                                            
 
                                                                                            
 
                                                                                            Precautions
                                                                                            Do not add brackets between multiple set operations, such as UNION, INTERSECT, and EXCEPT. Otherwise, an error is reported. 
                                                                                            
 
                                                                                            
diff --git a/docs/dli/sqlreference/dli_08_0190.html b/docs/dli/sqlreference/dli_08_0190.html
index 09177dd4..e501233b 100644
--- a/docs/dli/sqlreference/dli_08_0190.html
+++ b/docs/dli/sqlreference/dli_08_0190.html
@@ -16,7 +16,7 @@
 
 
                                                                                            
 
-
                                                                                            Keyword
                                                                                            • PARTITION BY: used to partition a table with one or multiple fields. Similar to GROUP BY, PARTITION BY is used to partition table by fields and each partition is a window. The window function can apply to the entire table or specific partitions. A maximum of 7,000 partitions can be created in a single table.
                                                                                            • ORDER BY: used to specify the order for the window function to obtain the value. ORDER BY can be used to sort table with one or multiple fields. The sorting order can be ascending (specified by ASC) or descending (specified by DESC). The window is specified by WINDOW. If the window is not specified, the default window is ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW. In other words, the window starts from the head of the table or partition (if PARTITION BY is used in the OVER clause) to the current row.
                                                                                            • WINDOW: used to define the window by specifying a range of rows.
                                                                                            • CURRENT ROW: indicates the current row.
                                                                                            • num PRECEDING: used to specify the start of the defined window. The window starts from the num row precedes the current row.
                                                                                            • UNBOUNDED PRECEDING: used to indicate that there is no start of the window.
                                                                                            • num FOLLOWING: used to specify the end of the defined window. The window ends from the num row following the current row.
                                                                                            • UNBOUNDED FOLLOWING: used to indicate that there is no end of the window.
                                                                                            • The differences between ROWS BETWEEN... and RANGE BETWEEN... are as follows:
                                                                                              • ROWS refers to the physical window. After the data is sorted, the physical window starts at the nth row in front of the current row and ends at the mth row following the current row.
                                                                                              • RANGE refers to the logic window. The column of the logic window is determined by the values rather than the location of rows.
                                                                                              
+
                                                                                              Keywords
                                                                                              • PARTITION BY: used to partition a table with one or multiple fields. Similar to GROUP BY, PARTITION BY is used to partition table by fields and each partition is a window. The window function can apply to the entire table or specific partitions. A maximum of 7,000 partitions can be created in a single table.
                                                                                              • ORDER BY: used to specify the order for the window function to obtain the value. ORDER BY can be used to sort table with one or multiple fields. The sorting order can be ascending (specified by ASC) or descending (specified by DESC). The window is specified by WINDOW. If the window is not specified, the default window is ROWS BETWEEN UNBOUNDED PRECEDING AND CURRENT ROW. In other words, the window starts from the head of the table or partition (if PARTITION BY is used in the OVER clause) to the current row.
                                                                                              • WINDOW: used to define the window by specifying a range of rows.
                                                                                              • CURRENT ROW: indicates the current row.
                                                                                              • num PRECEDING: used to specify the start of the defined window. The window starts from the num row precedes the current row.
                                                                                              • UNBOUNDED PRECEDING: used to indicate that there is no start of the window.
                                                                                              • num FOLLOWING: used to specify the end of the defined window. The window ends from the num row following the current row.
                                                                                              • UNBOUNDED FOLLOWING: used to indicate that there is no end of the window.
                                                                                              • The differences between ROWS BETWEEN... and RANGE BETWEEN... are as follows:
                                                                                                • ROWS refers to the physical window. After the data is sorted, the physical window starts at the nth row in front of the current row and ends at the mth row following the current row.
                                                                                                • RANGE refers to the logic window. The column of the logic window is determined by the values rather than the location of rows.
                                                                                                
 
                                                                                              • The scenarios of the window are as follows:
                                                                                                • The window only contains the current row.
                                                                                                  1
                                                                                                  ROWS BETWEEN CURRENT ROW AND CURRENT ROW
 
                                                                                                  
 
diff --git a/docs/dli/sqlreference/dli_08_0191.html b/docs/dli/sqlreference/dli_08_0191.html
index bb95f1ec..6cf55eef 100644
--- a/docs/dli/sqlreference/dli_08_0191.html
+++ b/docs/dli/sqlreference/dli_08_0191.html
@@ -5,7 +5,7 @@
 
                                                                                                  Relationship operators are binary operators. Two compared data types must be of the same type or they must support implicit conversion.
                                                                                                  
 
                                                                                                  Table 1 lists all relational operators supported by Flink SQL.
                                                                                                  
 
-
                                                                                                  Table 1 Relational Operators
                                                                                                  Operator
                                                                                                  
+
                                                                                                  
@@ -38,21 +38,21 @@
 
-
-
-
-
-
-
-
-
@@ -147,17 +147,17 @@
 
                                                                                                   
                                                                                                  • Values of the double, real, and float types may be different in precision. The equal sign (=) is not recommended for comparing two values of the double type. You are advised to obtain the absolute value by subtracting these two values of the double type and determine whether they are the same based on the absolute value. If the absolute value is small enough, the two values of the double data type are regarded equal. For example:
                                                                                                    abs(0.9999999999 - 1.0000000000) < 0.000000001 //The precision decimal places of 0.9999999999 and 1.0000000000 are 10, while the precision decimal place of 0.000000001 is 9. Therefore, 0.9999999999 can be regarded equal to 1.0000000000.
                                                                                                    
 
                                                                                                  
-
                                                                                                  • Comparison between data of the numeric type and character strings is allowed. During comparison using relational operators, including >, <, ≤, and ≥, data of the string type is converted to numeric type by default. No characters other than numeric characters are allowed.
                                                                                                  • Character strings can be compared using relational operators.
                                                                                                  
+
                                                                                                  • Comparison between data of the numeric type and strings is allowed. During comparison using relational operators, including >, <, ≤, and ≥, data of the string type is converted to numeric type by default. No characters other than numeric characters are allowed.
                                                                                                  • Strings can be compared using relational operators.
                                                                                                  
 
                                                                                                  Logical Operators
                                                                                                  Common logical operators are AND, OR, and NOT. Their priority order is NOT > AND > OR.
                                                                                                  
 
                                                                                                  Table 2 lists the calculation rules. A and B indicate logical expressions.
                                                                                                  
 
-
                                                                                                  Table 1 Relational operators
                                                                                                  Operator
                                                                                                  
                                                                                                   		
 
                                                                                                  Returned Data Type
                                                                                                  
                                                                                                   		
 
                                                                                                  BOOLEAN
                                                                                                  
 
                                                                                                  If A is less than or equal to B, then TRUE is returned. Otherwise, FALSE is returned. If A or B is NULL, then NULL is returned.
                                                                                                  
+
                                                                                                  If A is less than or equal to B, then TRUE is returned. Otherwise, FALSE is returned. If A or B is NULL, then NULL is returned.
                                                                                                  
                                                                                                   		
 
                                                                                                  
 
                                                                                                  A > B
                                                                                                  
                                                                                                   		
 
                                                                                                  BOOLEAN
                                                                                                  
 
                                                                                                  If A is greater than B, then TRUE is returned. Otherwise, FALSE is returned. If A or B is NULL, then NULL is returned.
                                                                                                  
+
                                                                                                  If A is greater than B, then TRUE is returned. Otherwise, FALSE is returned. If A or B is NULL, then NULL is returned.
                                                                                                  
                                                                                                   		
 
                                                                                                  
 
                                                                                                  A >= B
                                                                                                  
                                                                                                   		
 
                                                                                                  BOOLEAN
                                                                                                  
 
                                                                                                  If A is greater than or equal to B, then TRUE is returned. Otherwise, FALSE is returned. If A or B is NULL, then NULL is returned.
                                                                                                  
+
                                                                                                  If A is greater than or equal to B, then TRUE is returned. Otherwise, FALSE is returned. If A or B is NULL, then NULL is returned.
                                                                                                  
                                                                                                   		
 
                                                                                                  
 
                                                                                                  A IS NULL
                                                                                                  
@@ -80,7 +80,7 @@
                                                                                                   		
 
                                                                                                  BOOLEAN
                                                                                                  
 
                                                                                                  If A is equal to B, TRUE is returned. NULL indicates A equals B.
                                                                                                  
+
                                                                                                  If A is equal to B, TRUE is returned. NULL indicates A equals B.
                                                                                                  
                                                                                                   		
 
                                                                                                  
 
                                                                                                  A BETWEEN [ASYMMETRIC | SYMMETRIC] B AND C
                                                                                                  
@@ -111,21 +111,21 @@
                                                                                                   		
 
                                                                                                  BOOLEAN
                                                                                                  
 
                                                                                                  If A does not match pattern B, TRUE is returned. The escape character C can be defined as required.
                                                                                                  
+
                                                                                                  If A does not match pattern B, TRUE is returned. The escape character C can be defined as required.
                                                                                                  
                                                                                                   		
 
                                                                                                  
 
                                                                                                  A SIMILAR TO B [ ESCAPE C ]
                                                                                                  
                                                                                                   		
 
                                                                                                  BOOLEAN
                                                                                                  
 
                                                                                                  If A matches regular expression B, TRUE is returned. The escape character C can be defined as required.
                                                                                                  
+
                                                                                                  If A matches regular expression B, TRUE is returned. The escape character C can be defined as required.
                                                                                                  
                                                                                                   		
 
                                                                                                  
 
                                                                                                  A NOT SIMILAR TO B [ ESCAPE C ]
                                                                                                  
                                                                                                   		
 
                                                                                                  BOOLEAN
                                                                                                  
 
                                                                                                  If A does not match regular expression B, TRUE is returned. The escape character C can be defined as required.
                                                                                                  
+
                                                                                                  If A does not match regular expression B, TRUE is returned. The escape character C can be defined as required.
                                                                                                  
                                                                                                   		
 
                                                                                                  
 
                                                                                                  value IN (value [, value]* )
                                                                                                  
@@ -139,7 +139,7 @@
                                                                                                   		
 
                                                                                                  BOOLEAN
                                                                                                  
 
                                                                                                  If the value is not equal to any value in the list, TRUE is returned.
                                                                                                  
+
                                                                                                  If the value is not equal to any value in the list, TRUE is returned.
                                                                                                  
                                                                                                   		
 
                                                                                                  
 
 
 
 
                                                                                                  Table 2 Logical Operators
                                                                                                  Operator
                                                                                                  
+
                                                                                                  
-
@@ -172,7 +172,7 @@
 
-
-
-
-
-
-
@@ -232,11 +232,11 @@
 
                                                                                                  Arithmetic Operators
                                                                                                  Arithmetic operators include binary operators and unary operators, for all of which, the returned results are of the numeric type. Table 3 lists arithmetic operators supported by Flink SQL.
                                                                                                  
 
-
                                                                                                  Table 2 Logical operators
                                                                                                  Operator
                                                                                                  
                                                                                                   		
 
                                                                                                  Result Type
                                                                                                  
 
                                                                                                  Description
                                                                                                  
+
                                                                                                  Description
                                                                                                  
                                                                                                   		
 
                                                                                                  
                                                                                                   
 
                                                                                                  BOOLEAN
                                                                                                  
 
                                                                                                  If both A and B are TRUE, TRUE is returned. Three-valued logic is supported.
                                                                                                  
+
                                                                                                  If both A and B are TRUE, TRUE is returned. Three-valued logic is supported.
                                                                                                  
                                                                                                   		
 
                                                                                                  
 
                                                                                                  NOT A
                                                                                                  
@@ -186,28 +186,28 @@
                                                                                                   		
 
                                                                                                  BOOLEAN
                                                                                                  
 
                                                                                                  If A is TRUE, TRUE is returned. If A is UNKNOWN, FALSE is returned.
                                                                                                  
+
                                                                                                  If A is TRUE, TRUE is returned. If A is UNKNOWN, FALSE is returned.
                                                                                                  
                                                                                                   		
 
                                                                                                  
 
                                                                                                  A IS NOT FALSE
                                                                                                  
                                                                                                   		
 
                                                                                                  BOOLEAN
                                                                                                  
 
                                                                                                  If A is not FALSE, TRUE is returned. If A is UNKNOWN, TRUE is returned.
                                                                                                  
+
                                                                                                  If A is not FALSE, TRUE is returned. If A is UNKNOWN, TRUE is returned.
                                                                                                  
                                                                                                   		
 
                                                                                                  
 
                                                                                                  A IS TRUE
                                                                                                  
                                                                                                   		
 
                                                                                                  BOOLEAN
                                                                                                  
 
                                                                                                  If A is TRUE, TRUE is returned. If A is UNKNOWN, FALSE is returned.
                                                                                                  
+
                                                                                                  If A is TRUE, TRUE is returned. If A is UNKNOWN, FALSE is returned.
                                                                                                  
                                                                                                   		
 
                                                                                                  
 
                                                                                                  A IS NOT TRUE
                                                                                                  
                                                                                                   		
 
                                                                                                  BOOLEAN
                                                                                                  
 
                                                                                                  If A is not TRUE, TRUE is returned. If A is UNKNOWN, TRUE is returned.
                                                                                                  
+
                                                                                                  If A is not TRUE, TRUE is returned. If A is UNKNOWN, TRUE is returned.
                                                                                                  
                                                                                                   		
 
                                                                                                  
 
                                                                                                  A IS UNKNOWN
                                                                                                  
@@ -221,7 +221,7 @@
                                                                                                   		
 
                                                                                                  BOOLEAN
                                                                                                  
 
                                                                                                  If A is not UNKNOWN, TRUE is returned.
                                                                                                  
+
                                                                                                  If A is not UNKNOWN, TRUE is returned.
                                                                                                  
                                                                                                   		
 
                                                                                                  
                                                                                                   
 
                                                                                                  Table 3 Arithmetic Operators
                                                                                                  Operator
                                                                                                  
+
                                                                                                  
-
-
diff --git a/docs/dli/sqlreference/dli_08_0193.html b/docs/dli/sqlreference/dli_08_0193.html
index fd27ab90..b82ebe10 100644
--- a/docs/dli/sqlreference/dli_08_0193.html
+++ b/docs/dli/sqlreference/dli_08_0193.html
@@ -2,6 +2,8 @@
 
 
                                                                                                  Creating a DLI Table and Associating It with DWS
                                                                                                  Function
                                                                                                  This statement is used to create a DLI table and associate it with an existing DWS table.
                                                                                                  
+
                                                                                                   
                                                                                                  In Spark cross-source development scenarios, there is a risk of password leakage if datasource authentication information is directly configured. You are advised to use the datasource authentication provided by DLI.
                                                                                                  
+
                                                                                                  
 
                                                                                                  
 
                                                                                                  Prerequisites
                                                                                                  Before creating a DLI table and associating it with DWS, you need to create a datasource connection. For details about operations on the management console, see 
                                                                                                  
 
                                                                                                  
@@ -20,8 +22,8 @@
 
 
                                                                                                  
-
                                                                                                  Keyword
                                                                                                  
-
                                                                                                  Table 3 Arithmetic operators
                                                                                                  Operator
                                                                                                  
 
                                                                                                  Result Type
                                                                                                  
+
                                                                                                  Result Type
                                                                                                  
 
                                                                                                  Description
                                                                                                  
+
                                                                                                  Description
                                                                                                  
                                                                                                   		
 
                                                                                                  
                                                                                                   
 
 
                                                                                                  Table 1 CREATE TABLE parameter description
                                                                                                  Parameter
                                                                                                  
+
                                                                                                  Keywords
                                                                                                  
+
                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0194.html b/docs/dli/sqlreference/dli_08_0194.html
index 5d401935..d69c5036 100644
--- a/docs/dli/sqlreference/dli_08_0194.html
+++ b/docs/dli/sqlreference/dli_08_0194.html
@@ -29,8 +29,8 @@
 
                                                                                                  Keywords
                                                                                                  For details about the SELECT keywords, see Basic SELECT Statements.
                                                                                                  
 
                                                                                                  
-
                                                                                                  Parameter description
                                                                                                  
-
                                                                                                  Table 1 CREATE TABLE keywords 
                                                                                                  Parameter
                                                                                                  
                                                                                                   		
 
                                                                                                  Description
                                                                                                  
                                                                                                   		
 
                                                                                                  Table 1 Parameter description
                                                                                                  Parameter
                                                                                                  
+
                                                                                                  Parameters
                                                                                                  
+
                                                                                                  
@@ -70,7 +70,7 @@
 
                                                                                                  Table 1 Parameters
                                                                                                  Parameter
                                                                                                  
                                                                                                   		
 
                                                                                                  Description
                                                                                                  
 
                                                                                                  
 
                                                                                                  
 
                                                                                                  
-
                                                                                                  Precautions
                                                                                                  • The target DLI table must exist.
                                                                                                  • When creating the DLI table, you do not need to specify the Schema information. The Schema information complies with that in the DWS table. If the number and type of fields selected in the SELECT clause do not match the Schema information in the DWS table, the system reports an error.
                                                                                                  • You are advised not to concurrently insert data into a table. If you concurrently insert data into a table, there is a possibility that conflicts occur, leading to failed data insertion.
                                                                                                  
+
                                                                                                  Precautions
                                                                                                  • A DLI table is available.
                                                                                                  • When creating the DLI table, you do not need to specify the Schema information. The Schema information complies with that in the DWS table. If the number and type of fields selected in the SELECT clause do not match the Schema information in the DWS table, the system reports an error.
                                                                                                  • You are advised not to concurrently insert data into a table. If you concurrently insert data into a table, there is a possibility that conflicts occur, leading to failed data insertion.
                                                                                                  
 
                                                                                                  
 
                                                                                                  Example
                                                                                                  • Query data in the user table and insert the data into the test table.
                                                                                                    1
 2
diff --git a/docs/dli/sqlreference/dli_08_0195.html b/docs/dli/sqlreference/dli_08_0195.html
index 82204650..d3bc2a65 100644
--- a/docs/dli/sqlreference/dli_08_0195.html
+++ b/docs/dli/sqlreference/dli_08_0195.html
@@ -7,7 +7,7 @@
 
 
                                                                                                    
 
-
                                                                                                    Keyword
                                                                                                    LIMIT is used to limit the query results. Only INT type is supported by the number parameter.
                                                                                                    
+
                                                                                                    Keywords
                                                                                                    LIMIT is used to limit the query results. Only INT type is supported by the number parameter.
                                                                                                    
 
                                                                                                    
 
                                                                                                    Precautions
                                                                                                    The table to be queried must exist. Otherwise, an error is reported.
                                                                                                    
 
                                                                                                    
diff --git a/docs/dli/sqlreference/dli_08_0197.html b/docs/dli/sqlreference/dli_08_0197.html
index a0069259..4717f3af 100644
--- a/docs/dli/sqlreference/dli_08_0197.html
+++ b/docs/dli/sqlreference/dli_08_0197.html
@@ -2,6 +2,8 @@
 
 
                                                                                                    Creating a DLI Table and Associating It with RDS
                                                                                                    
 
                                                                                                    Function
                                                                                                    This statement is used to create a DLI table and associate it with an existing RDS table. This function supports access to the MySQL and PostgreSQL clusters of RDS.
                                                                                                    
+
                                                                                                     
                                                                                                    In Spark cross-source development scenarios, there is a risk of password leakage if datasource authentication information is directly configured. You are advised to use the datasource authentication provided by DLI.
                                                                                                    
+
                                                                                                    
 
                                                                                                    
 
                                                                                                    Prerequisites
                                                                                                    Before creating a DLI table and associating it with RDS, you need to create a datasource connection. For details about operations on the management console, see 
                                                                                                    
 
                                                                                                    
@@ -23,7 +25,7 @@
 
                                                                                                    
 
                                                                                                    
 
                                                                                                    Keywords
                                                                                                    
-
                                                                                                    Table 1 CREATE TABLE parameter description
                                                                                                    Parameter
                                                                                                    
+
                                                                                                    
@@ -129,7 +131,7 @@
 
                                                                                                    Precautions
                                                                                                    When creating a table associated with RDS, you do not need to specify the Schema of the associated table. DLI automatically obtains the schema of the table in the dbtable parameter of RDS.
                                                                                                    
 
                                                                                                    
-
                                                                                                    Example
                                                                                                    Accessing MySQL:
                                                                                                    
+
                                                                                                    Example
                                                                                                    Accessing MySQL
                                                                                                    
 
                                                                                                    Table 1 CREATE TABLE keywords
                                                                                                    Parameter
                                                                                                    
                                                                                                     		
 
                                                                                                    Description
                                                                                                    
                                                                                                     		
 
                                                                                                    1
 2
 3
@@ -147,7 +149,7 @@
 
 
                                                                                                    
 
                                                                                                    
-
                                                                                                    Accessing PostgreSQL:
                                                                                                    
+
                                                                                                    Accessing PostgreSQL
                                                                                                    
 
                                                                                                    1
 2
 3
diff --git a/docs/dli/sqlreference/dli_08_0198.html b/docs/dli/sqlreference/dli_08_0198.html
index 609559c5..f678c542 100644
--- a/docs/dli/sqlreference/dli_08_0198.html
+++ b/docs/dli/sqlreference/dli_08_0198.html
@@ -29,8 +29,8 @@
 
                                                                                                    
 
                                                                                                    Keywords
                                                                                                    For details about the SELECT keywords, see Basic SELECT Statements.
                                                                                                    
 
                                                                                                    
-
                                                                                                    Parameter description
                                                                                                    
-
                                                                                                    Table 1 Parameter description
                                                                                                    Parameter
                                                                                                    
+
                                                                                                    Parameters
                                                                                                    
+
                                                                                                    
@@ -70,7 +70,7 @@
 
                                                                                                    Table 1 Parameters
                                                                                                    Parameter
                                                                                                    
                                                                                                     		
 
                                                                                                    Description
                                                                                                    
 
                                                                                                    
 
                                                                                                    
 
                                                                                                    
-
                                                                                                    Precautions
                                                                                                    • The target DLI table must exist.
                                                                                                    • When creating the DLI table, you do not need to specify the Schema information. The Schema information complies with that in the RDS table. If the number and type of fields selected in the SELECT clause do not match the Schema information in the RDS table, the system reports an error.
                                                                                                    • You are advised not to concurrently insert data into a table. If you concurrently insert data into a table, there is a possibility that conflicts occur, leading to failed data insertion.
                                                                                                    
+
                                                                                                    Precautions
                                                                                                    • A DLI table is available.
                                                                                                    • When creating the DLI table, you do not need to specify the Schema information. The Schema information complies with that in the RDS table. If the number and type of fields selected in the SELECT clause do not match the Schema information in the RDS table, the system reports an error.
                                                                                                    • You are advised not to concurrently insert data into a table. If you concurrently insert data into a table, there is a possibility that conflicts occur, leading to failed data insertion.
                                                                                                    
 
                                                                                                    
 
                                                                                                    Example
                                                                                                    • Query data in the user table and insert the data into the test table.
                                                                                                      1
 2
diff --git a/docs/dli/sqlreference/dli_08_0199.html b/docs/dli/sqlreference/dli_08_0199.html
index c3a650de..a6c2a28d 100644
--- a/docs/dli/sqlreference/dli_08_0199.html
+++ b/docs/dli/sqlreference/dli_08_0199.html
@@ -7,7 +7,7 @@
 
 
                                                                                                      
 
-
                                                                                                      Keyword
                                                                                                      LIMIT is used to limit the query results. Only INT type is supported by the number parameter.
                                                                                                      
+
                                                                                                      Keywords
                                                                                                      LIMIT is used to limit the query results. Only INT type is supported by the number parameter.
                                                                                                      
 
                                                                                                      
 
                                                                                                      Precautions
                                                                                                      The table to be queried must exist. Otherwise, an error is reported.
                                                                                                      
 
                                                                                                      
diff --git a/docs/dli/sqlreference/dli_08_0201.html b/docs/dli/sqlreference/dli_08_0201.html
index 436988a7..381e7df3 100644
--- a/docs/dli/sqlreference/dli_08_0201.html
+++ b/docs/dli/sqlreference/dli_08_0201.html
@@ -2,6 +2,8 @@
 
 
                                                                                                      Creating a DLI Table and Associating It with CSS
                                                                                                      
 
                                                                                                      Function
                                                                                                      This statement is used to create a DLI table and associate it with an existing CSS table.
                                                                                                      
+
                                                                                                       
                                                                                                      In Spark cross-source development scenarios, there is a risk of password leakage if datasource authentication information is directly configured. You are advised to use the datasource authentication provided by DLI.
                                                                                                      
+
                                                                                                      
 
                                                                                                      
 
                                                                                                      Prerequisites
                                                                                                      Before creating a DLI table and associating it with CSS, you need to create a datasource connection. For details about operations on the management console, see 
                                                                                                      
 
                                                                                                      
@@ -32,8 +34,8 @@
 
 
                                                                                                      
 
                                                                                                      
-
                                                                                                      Keyword
                                                                                                      
-
                                                                                                      Table 1 CREATE TABLE parameter description
                                                                                                      Parameter
                                                                                                      
+
                                                                                                      Keywords
                                                                                                      
+
                                                                                                      
diff --git a/docs/dli/sqlreference/dli_08_0202.html b/docs/dli/sqlreference/dli_08_0202.html
index 02e3e32d..a07513c2 100644
--- a/docs/dli/sqlreference/dli_08_0202.html
+++ b/docs/dli/sqlreference/dli_08_0202.html
@@ -29,8 +29,8 @@
 
                                                                                                      Keywords
                                                                                                      For details about the SELECT keywords, see Basic SELECT Statements.
                                                                                                      
 
                                                                                                      
-
                                                                                                      Parameter description
                                                                                                      
-
                                                                                                      Table 1 CREATE TABLE keywords
                                                                                                      Parameter
                                                                                                      
                                                                                                       		
 
                                                                                                      Description
                                                                                                      
                                                                                                       		
 
                                                                                                      Table 1 Parameter description
                                                                                                      Parameter
                                                                                                      
+
                                                                                                      Parameters
                                                                                                      
+
                                                                                                      
@@ -70,7 +70,7 @@
 
                                                                                                      Table 1 Parameters
                                                                                                      Parameter
                                                                                                      
                                                                                                       		
 
                                                                                                      Description
                                                                                                      
 
                                                                                                      
 
                                                                                                      
 
                                                                                                      
-
                                                                                                      Precautions
                                                                                                      • The target DLI table must exist.
                                                                                                      • When creating the DLI table, you need to specify the schema information. If the number and type of fields selected in the SELECT clause or in Values do not match the Schema information in the CSS table, the system reports an error.
                                                                                                      • Inconsistent types may not always cause error reports. For example, if the data of the int type is inserted, but the text type is saved in the CSS Schema, the int type will be converted to the text type and no error will be reported.
                                                                                                      • You are advised not to concurrently insert data into a table. If you concurrently insert data into a table, there is a possibility that conflicts occur, leading to failed data insertion.
                                                                                                      
+
                                                                                                      Precautions
                                                                                                      • A DLI table is available.
                                                                                                      • When creating the DLI table, you need to specify the schema information. If the number and type of fields selected in the SELECT clause or in Values do not match the Schema information in the CSS table, the system reports an error.
                                                                                                      • Inconsistent types may not always cause error reports. For example, if the data of the int type is inserted, but the text type is saved in the CSS Schema, the int type will be converted to the text type and no error will be reported.
                                                                                                      • You are advised not to concurrently insert data into a table. If you concurrently insert data into a table, there is a possibility that conflicts occur, leading to failed data insertion.
                                                                                                      
 
                                                                                                      
 
                                                                                                      Example
                                                                                                      • Query data in the user table and insert the data into the test table.
                                                                                                        1
 2
diff --git a/docs/dli/sqlreference/dli_08_0203.html b/docs/dli/sqlreference/dli_08_0203.html
index 91afb0dd..e9934c58 100644
--- a/docs/dli/sqlreference/dli_08_0203.html
+++ b/docs/dli/sqlreference/dli_08_0203.html
@@ -7,7 +7,7 @@
 
 
                                                                                                        
 
-
                                                                                                        Keyword
                                                                                                        LIMIT is used to limit the query results. Only INT type is supported by the number parameter.
                                                                                                        
+
                                                                                                        Keywords
                                                                                                        LIMIT is used to limit the query results. Only INT type is supported by the number parameter.
                                                                                                        
 
                                                                                                        
 
                                                                                                        Precautions
                                                                                                        The table to be queried must exist. Otherwise, an error is reported.
                                                                                                        
 
                                                                                                        
diff --git a/docs/dli/sqlreference/dli_08_0204.html b/docs/dli/sqlreference/dli_08_0204.html
index 95310f11..b37c303b 100644
--- a/docs/dli/sqlreference/dli_08_0204.html
+++ b/docs/dli/sqlreference/dli_08_0204.html
@@ -3,6 +3,9 @@
 
                                                                                                        Creating a DLI Table Using the Hive Syntax
                                                                                                        
 
                                                                                                        Function
                                                                                                        This Hive syntax is used to create a DLI table. The main differences between the DataSource and the Hive syntax lie in the supported data formats and the number of supported partitions. For details, see syntax and precautions.
                                                                                                        
 
                                                                                                        
+
                                                                                                        Precautions
                                                                                                        • Table properties cannot be specified using CTAS table creation statements.
                                                                                                        • Instructions on using partitioned tables:
                                                                                                          • When you create a partitioned table, ensure that the specified column in PARTITIONED BY is not a column in the table and the data type is specified. The partition column supports only the open-source Hive table types including string, boolean, tinyint, smallint, short, int, bigint, long, decimal, float, double, date, and timestamp.
                                                                                                          • Multiple partition fields can be specified. The partition fields need to be specified after the PARTITIONED BY keyword, instead of the table name. Otherwise, an error occurs.
                                                                                                          • A maximum of 200,000 partitions can be created in a single table.
                                                                                                          • CTAS table creation statements cannot be used to create partitioned tables.
                                                                                                          
+
                                                                                                        
+
                                                                                                        
 
                                                                                                        Syntax
                                                                                                         1
  2
  3
@@ -24,7 +27,7 @@
   [PARTITIONED BY (col_name2 col_type2, [COMMENT col_comment2], ...)] 
   [ROW FORMAT row_format]
   STORED AS file_format 
-  [TBLPROPERTIES (key1=val1, key2=val2, ...)]
+  [TBLPROPERTIES (key = value)]
   [AS select_statement];
 
 row_format:
@@ -38,97 +41,262 @@
 
 
                                                                                                        
 
-
                                                                                                        Keyword
                                                                                                        • IF NOT EXISTS: Prevents system errors when the created table exists.
                                                                                                        • COMMENT: Field or table description.
                                                                                                        • PARTITIONED BY: Partition field.
                                                                                                        • ROW FORMAT: Row data format.
                                                                                                        • STORED AS: Specifies the format of the file to be stored. Currently, only the TEXTFILE, AVRO, ORC, SEQUENCEFILE, RCFILE, and PARQUET format are supported. This keyword is mandatory when you create DLI tables.
                                                                                                        • TBLPROPERTIES: The TBLPROPERTIES clause allows you to add the key/value attribute to a table.
                                                                                                          For example, if the table storage format is Parquet, you can use TBLPROPERTIES(parquet.compression = 'zstd') to set the table compression format to zstd.
                                                                                                          
+
                                                                                                          Keywords
                                                                                                          • IF NOT EXISTS: Prevents system errors when the created table exists.
                                                                                                          • COMMENT: Field or table description.
                                                                                                          • PARTITIONED BY: Partition field.
                                                                                                          • ROW FORMAT: Row data format.
                                                                                                          • STORED AS: Specifies the format of the file to be stored. Currently, only the TEXTFILE, AVRO, ORC, SEQUENCEFILE, RCFILE, and PARQUET format are supported. This keyword is mandatory when you create DLI tables.
                                                                                                          • TBLPROPERTIES: This keyword is used to add a key/value property to a table.
                                                                                                            • If the table storage format is Parquet, you can use TBLPROPERTIES(parquet.compression = 'zstd') to set the table compression format to zstd.
                                                                                                            
 
                                                                                                          • AS: Run the CREATE TABLE AS statement to create a table.
                                                                                                          
 
                                                                                                          
-
                                                                                                          Parameter Description
                                                                                                          
-
                                                                                                          Table 1 Parameter description
                                                                                                          Parameter
                                                                                                          
+
                                                                                                          Parameters
                                                                                                          
+
                                                                                                          
-
+
-
-
+
-
-
+
-
-
+
-
-
+
-
-
+
-
-
+
-
-
+
-
-
+
-
-
+
+
+
+
+
                                                                                                          Table 1 Parameters
                                                                                                          Parameter
                                                                                                          
 
                                                                                                          Description
                                                                                                          
+
                                                                                                          Mandatory
                                                                                                          
+
                                                                                                          Description
                                                                                                          
                                                                                                           		
 
                                                                                                          
 
                                                                                                          db_name
                                                                                                          
+
                                                                                                          db_name
                                                                                                          
 
                                                                                                          Database name that contains letters, digits, and underscores (_). The value cannot contain only digits and cannot start with a digit or underscore (_).
                                                                                                          
+
                                                                                                          No
                                                                                                          
+
                                                                                                          Database name
                                                                                                          
+
                                                                                                          The value can contain letters, numbers, and underscores (_), but it cannot contain only numbers or start with a number or underscore (_).
                                                                                                          
                                                                                                           		
 
                                                                                                          table_name
                                                                                                          
+
                                                                                                          table_name
                                                                                                          
 
                                                                                                          Table name of a database that contains letters, digits, and underscores (_). The value cannot contain only digits and cannot start with a digit or underscore (_). The matching rule is ^(?!_)(?![0-9]+$)[A-Za-z0-9_$]*$. If special characters are required, use single quotation marks ('') to enclose them.
                                                                                                          
+
                                                                                                          Yes
                                                                                                          
+
                                                                                                          Table name in the database
                                                                                                          
+
                                                                                                          The value can contain letters, numbers, and underscores (_), but it cannot contain only numbers or start with a number or underscore (_). The matching rule is ^(?!_)(?![0-9]+$)[A-Za-z0-9_$]*$. If special characters are required, use single quotation marks ('') to enclose them.
                                                                                                          
                                                                                                           		
 
                                                                                                          col_name
                                                                                                          
+
                                                                                                          col_name
                                                                                                          
 
                                                                                                          Column names with data types separated by commas (,). The column name contains letters, digits, and underscores (_). It cannot contain only digits and must contain at least one letter.
                                                                                                          
+
                                                                                                          Yes
                                                                                                          
+
                                                                                                          Column name
                                                                                                          
+
                                                                                                          The column field can contain letters, numbers, and underscores (_), but it cannot contain only numbers and must contain at least one letter.
                                                                                                          
+
                                                                                                          The column name is case insensitive.
                                                                                                          
                                                                                                           		
 
                                                                                                          col_type
                                                                                                          
+
                                                                                                          col_type
                                                                                                          
 
                                                                                                          Field type
                                                                                                          
+
                                                                                                          Yes
                                                                                                          
+
                                                                                                          Data type of a column field, which is primitive.
                                                                                                          
                                                                                                           		
 
                                                                                                          col_comment
                                                                                                          
+
                                                                                                          col_comment
                                                                                                          
 
                                                                                                          Field description
                                                                                                          
+
                                                                                                          No
                                                                                                          
+
                                                                                                          Column field description, which can only be string constants.
                                                                                                          
                                                                                                           		
 
                                                                                                          row_format
                                                                                                          
+
                                                                                                          row_format
                                                                                                          
 
                                                                                                          Line data format
                                                                                                          
+
                                                                                                          Yes
                                                                                                          
+
                                                                                                          Row data format
                                                                                                          
                                                                                                           		
 
                                                                                                          file_format
                                                                                                          
+
                                                                                                          file_format
                                                                                                          
 
                                                                                                          Data storage format: TEXTFILE, AVRO, ORC, SEQUENCEFILE, RCFILE, PARQUET.
                                                                                                          
+
                                                                                                          Yes
                                                                                                          
+
                                                                                                          DLI table storage format, which can be TEXTFILE, AVRO, ORC, SEQUENCEFILE, RCFILE, or PARQUET.
                                                                                                          
                                                                                                           		
 
                                                                                                          table_comment
                                                                                                          
+
                                                                                                          table_comment
                                                                                                          
 
                                                                                                          Table description
                                                                                                          
+
                                                                                                          No
                                                                                                          
+
                                                                                                          Table description, which can only be string constants.
                                                                                                          
                                                                                                           		
 
                                                                                                          select_statement
                                                                                                          
+
                                                                                                          key = value
                                                                                                          
 
                                                                                                          The CREATE TABLE AS statement is used to insert the SELECT query result of the source table or a data record to a newly created DLI table.
                                                                                                          
+
                                                                                                          No
                                                                                                          
+
                                                                                                          Set table properties and values.
                                                                                                          
+
                                                                                                          If the table storage format is Parquet, you can use TBLPROPERTIES(parquet.compression = 'zstd') to set the table compression format to zstd.
                                                                                                          
+
                                                                                                          select_statement
                                                                                                          
+
                                                                                                          No
                                                                                                          
+
                                                                                                          The CREATE TABLE AS statement is used to insert the SELECT query result of the source table or a data record to a newly created DLI table.
                                                                                                          
                                                                                                           		
 
                                                                                                          
                                                                                                           
 
                                                                                                          
 
                                                                                                          
 
                                                                                                          
-
                                                                                                          Precautions
                                                                                                          • When you create a partitioned table, ensure that the specified column in PARTITIONED BY is not a column in the table and the data type is specified. The partition column supports only the open-source Hive table types including string, boolean, tinyint, smallint, short, int, bigint, long, decimal, float, double, date, and timestamp.
                                                                                                          • Multiple partition fields can be specified. The partition fields need to be specified after the PARTITIONED BY keyword, instead of the table name. Otherwise, an error occurs.
                                                                                                          • A maximum of 100,000 partitions can be created in a single table.
                                                                                                          • The CREATE TABLE AS statement cannot specify table attributes or create partitioned tables.
                                                                                                          
-
                                                                                                          
-
                                                                                                          Example
                                                                                                          • Create a src table that has key and value columns in INT and STRING types respectively, and specify a property as required.
                                                                                                            1
+
                                                                                                            Example 1: Creating a DLI Non-Partitioned Table
                                                                                                            Example description: Create a DLI non-partitioned table named table1 and use the STORED AS keyword to set the storage format of the table to orc.
                                                                                                            
+
                                                                                                            You can save DLI tables in the textfile, avro, orc, sequencefile, rcfile, or parquet format.
                                                                                                            
+
                                                                                                            1
 2
 3
-4
                                                                                                            CREATE TABLE src
-  (key INT, value STRING)
-  STORED AS PARQUET
-  TBLPROPERTIES('key1' = 'value1');
+4
+5
                                                                                                            CREATE TABLE IF NOT EXISTS table1 (
+    col_1   STRING,
+    col_2   INT
+)
+STORED AS orc;
 
                                                                                                            
 
 
                                                                                                            
-
                                                                                                          • Create a student table that has name, score, and classNo columns, and partition the table by classNo.
                                                                                                            1
+
                                                                                                            
+
                                                                                                            Example 2: Creating a DLI Partitioned Table
                                                                                                            Example description: Create a partitioned table named student, which is partitioned using facultyNo and classNo.
                                                                                                            
+
                                                                                                            In practice, you can select a proper partitioning field and add it to the end of the PARTITIONED BY keyword.
                                                                                                            
+
                                                                                                            1
 2
 3
-4
                                                                                                            CREATE TABLE student
-  (name STRING, score INT)
-  STORED AS PARQUET
-  TBLPROPERTIES(parquet.compression = 'zstd') PARTITIONED BY(classNo INT);
+4
+5
+6
+7
+8
+9
                                                                                                            CREATE TABLE IF NOT EXISTS student(
+    id      int,
+    name    STRING
+)
+STORED AS avro
+PARTITIONED BY (
+    facultyNo   INT,
+    classNo     INT
+);
 
                                                                                                            
 
 
                                                                                                            
-
                                                                                                          • Create table t1 and insert t2 data into table t1.
                                                                                                            1
+
                                                                                                            
+
                                                                                                            Example 3: Using CTAS to Create a DLI Table Using All or Part of the Data in the Source Table
                                                                                                            Example description: Based on the DLI table table1 created in Example 1: Creating a DLI Non-Partitioned Table, use the CTAS syntax to copy data from table1 to table1_ctas.
                                                                                                            
+
                                                                                                            When using CTAS to create a table, you can ignore the syntax used to create the table being copied. This means that regardless of the syntax used to create table1, you can use the DataSource syntax to create table1_ctas.
                                                                                                            
+
                                                                                                            In this example, the storage format of table1 is orc, and the storage format of table1_ctas may be parquet. This means that the storage format of the table created by CTAS may be different from that of the original table.
                                                                                                            
+
                                                                                                            Use the SELECT statement following the AS keyword to select required data and insert the data to table1_ctas.
                                                                                                            
+
                                                                                                            The SELECT syntax is as follows: SELECT <Column name > FROM <Table name > WHERE <Related filter criteria>.
                                                                                                            
+
                                                                                                            • In the example, select * from table1 indicates that all statements are selected from table1 and copied to table1_ctas.
                                                                                                              1
 2
-3
                                                                                                              CREATE TABLE t1
-  STORED AS PARQUET
-  AS select * from t2;
+3
+4
+5
                                                                                                              CREATE TABLE IF NOT EXISTS table1_ctas
+STORED AS sequencefile
+AS
+SELECT  *
+FROM table1;
+
                                                                                                              
+
+
                                                                                                              
+
                                                                                                            • If you do not need all data in table1, change AS SELECT * FROM table1 to AS SELECT col_1 FROM table1 WHERE col_1 = Ann. In this way, you can run the SELECT statement to insert all rows whose col_1 column is Ann from table1 to table1_ctas.
                                                                                                              1
+2
+3
+4
+5
+6
                                                                                                              CREATE TABLE IF NOT EXISTS table1_ctas
+USING parquet
+AS
+SELECT col_1
+FROM table1
+WHERE col_1 = 'Ann';
 
                                                                                                              
 
 
                                                                                                              
 
                                                                                                            
 
                                                                                                            
+
                                                                                                            Example 4: Creating a DLI Non-Partitioned Table and Customizing the Data Type of a Column Field
                                                                                                            Example description: Create a DLI non-partitioned table named table2. You can customize the native data types of column fields based on service requirements.
                                                                                                            
+
                                                                                                            • STRING, CHAR, or VARCHAR can be used for text characters.
                                                                                                            • TIMESTAMP or DATE can be used for time characters.
                                                                                                            • INT, SMALLINT/SHORT, BIGINT/LONG, or TINYINT can be used for integer characters.
                                                                                                            • FLOAT, DOUBLE, or DECIMAL can be used for decimal calculation.
                                                                                                            • BOOLEAN can be used if only logical switches are involved.
                                                                                                            
+
                                                                                                            For details, see "Data Types" > "Primitive Data Types".
                                                                                                            
+
                                                                                                             1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+10
+11
+12
+13
+14
+15
+16
                                                                                                            CREATE TABLE IF NOT EXISTS table2 (
+    col_01  STRING,
+    col_02  CHAR (2),
+    col_03  VARCHAR (32),
+    col_04  TIMESTAMP,
+    col_05  DATE,
+    col_06  INT,
+    col_07  SMALLINT,
+    col_08  BIGINT,
+    col_09  TINYINT,
+    col_10  FLOAT,
+    col_11  DOUBLE,
+    col_12  DECIMAL (10, 3),
+    col_13  BOOLEAN
+)
+STORED AS parquet;
+
                                                                                                            
+
+
                                                                                                            
+
                                                                                                            
+
                                                                                                            Example 5: Creating a DLI Partitioned Table and Customizing TBLPROPERTIES Parameters
                                                                                                            Example description: Create a DLI partitioned table named table3 and partition the table based on col_3. Set dli.multi.version.enable, comment, orc.compress, and auto.purge in TBLPROPERTIES.
                                                                                                            
+
                                                                                                            • dli.multi.version.enable: In this example, set this parameter to true, indicating that the DLI data versioning function is enabled for table data backup and restoration.
                                                                                                            • comment: table description, which can be modified later.
                                                                                                            • orc.compress: compression mode of the orc format, which is ZLIB in this example.
                                                                                                            • auto.purge: In this example, set this parameter to true, indicating that data that is deleted or overwritten will bypass the recycle bin and be permanently deleted.
                                                                                                            
+
                                                                                                             1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+10
+11
+12
                                                                                                            CREATE TABLE IF NOT EXISTs table3 (
+    col_1 STRING,
+    col_2 STRING
+)
+PARTITIONED BY (col_3 DATE)
+STORED AS rcfile
+TBLPROPERTIES (
+    dli.multi.version.enable    = true,
+    comment                     = 'Created by dli',
+    orc.compress                = 'ZLIB',
+    auto.purge                  = true
+);
+
                                                                                                            
+
+
                                                                                                            
+
                                                                                                            
+
                                                                                                            Example 6: Creating a Non-Partitioned Table in Textfile Format and Setting ROW FORMAT
                                                                                                            Example description: In this example, create a non-partitioned table named table4 in the textfile format and set ROW FORMAT (the ROW FORMAT function is available only for textfile tables).
                                                                                                            
+
                                                                                                            • Fields: columns in a table. Each field has a name and data type. Fields in a table are separated by slashes (/).
                                                                                                            • COLLECTION ITEMS: A collection item refers to an element in a group of data, which can be an array, a list, or a collection. Collection items in table4 are separated by $.
                                                                                                            • MAP KEYS: A map key is a data structure of key-value pairs and is used to store a group of associated data. Map keys in a table are separated by number signs (#).
                                                                                                            • Rows: rows in a table. Each row contains a group of field values. Rows in a table end with \n. (Note that only \n can be used as the row separator.)
                                                                                                            • NULL: a special value that represents a missing or unknown value. In a table, NULL indicates that the field has no value or the value is unknown. When there is a null value in the data, it is represented by the string null.
                                                                                                            
+
                                                                                                             1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+10
+11
                                                                                                            CREATE TABLE IF NOT EXISTS table4 (
+    col_1   STRING,
+    col_2   INT
+)
+STORED AS TEXTFILE
+ROW FORMAT
+DELIMITED FIELDS TERMINATED   BY '/'
+COLLECTION ITEMS TERMINATED   BY '$'
+MAP KEYS TERMINATED           BY '#'
+LINES TERMINATED              BY '\n'
+NULL DEFINED                  AS 'NULL';
+
                                                                                                            
+
+
                                                                                                            
+
                                                                                                            
 
 
                                                                                                            
 
                                                                                                            
diff --git a/docs/dli/sqlreference/dli_08_0205.html b/docs/dli/sqlreference/dli_08_0205.html
index 3248d403..48fa2aaf 100644
--- a/docs/dli/sqlreference/dli_08_0205.html
+++ b/docs/dli/sqlreference/dli_08_0205.html
@@ -14,10 +14,10 @@
 
 
                                                                                                            
 
                                                                                                            
-
                                                                                                            Keyword
                                                                                                            • USING: Specifies the storage format.
                                                                                                            • OPTIONS: Specifies the list of attributes to be exported. This parameter is optional.
                                                                                                            
+
                                                                                                            Keywords
                                                                                                            • USING: Specifies the storage format.
                                                                                                            • OPTIONS: Specifies the list of attributes to be exported. This parameter is optional.
                                                                                                            
 
                                                                                                            
 
                                                                                                            Parameter
                                                                                                            
-
                                                                                                            Table 1 INSERT OVERWRITE DIRECTORY parameter description
                                                                                                            Parameter
                                                                                                            
+
                                                                                                            
@@ -36,7 +36,7 @@
 
                                                                                                            Table 1 INSERT OVERWRITE DIRECTORY parameters
                                                                                                            Parameter
                                                                                                            
                                                                                                             		
 
                                                                                                            Description
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            
-
                                                                                                             
                                                                                                            If the file format is set to CSV, see the Table 3 for the OPTIONS parameters.
                                                                                                            
+
                                                                                                             
                                                                                                            If file_format is set to csv, see Table 3 for the OPTIONS parameters.
                                                                                                            
 
                                                                                                            
 
                                                                                                            
 
                                                                                                            Precautions
                                                                                                            • You can configure the spark.sql.shuffle.partitions parameter to set the number of files to be inserted into the OBS bucket in the non-DLI table. In addition, to avoid data skew, you can add distribute by rand() to the end of the INSERT statement to increase the number of concurrent jobs. The following is an example:
                                                                                                              insert into table table_target select * from table_source distribute by cast(rand() * N as int);
                                                                                                              
diff --git a/docs/dli/sqlreference/dli_08_0207.html b/docs/dli/sqlreference/dli_08_0207.html
index d127ad78..a226a0e8 100644
--- a/docs/dli/sqlreference/dli_08_0207.html
+++ b/docs/dli/sqlreference/dli_08_0207.html
@@ -6,7 +6,7 @@
 
                                                                                                            
 
                                                                                                            Primitive Data Types
                                                                                                            Table 1 lists native data types supported by Flink SQL.
                                                                                                            
 
-
                                                                                                            Table 1 Primitive Data Types
                                                                                                            Data Type
                                                                                                            
+
                                                                                                            
@@ -160,7 +160,7 @@
 
                                                                                                            Complex Data Types
                                                                                                            Flink SQL supports complex data types and complex type nesting. Table 2 describes complex data types.
                                                                                                            
 
-
                                                                                                            Table 1 Primitive data types
                                                                                                            Data Type
                                                                                                            
                                                                                                             		
 
                                                                                                            Description
                                                                                                            
                                                                                                             		
 
                                                                                                            Table 2 Complex Data Types
                                                                                                            Data Type
                                                                                                            
+
                                                                                                            
diff --git a/docs/dli/sqlreference/dli_08_0216.html b/docs/dli/sqlreference/dli_08_0216.html
index 6d5966b1..da68ad2d 100644
--- a/docs/dli/sqlreference/dli_08_0216.html
+++ b/docs/dli/sqlreference/dli_08_0216.html
@@ -16,8 +16,8 @@
 
                                                                                                             
                                                                                                            • Clustering algorithms can be applied in unbounded streams.
                                                                                                            
 
                                                                                                            
-
                                                                                                            Parameter Description
                                                                                                            
-
                                                                                                            Table 2 Complex data types
                                                                                                            Data Type
                                                                                                            
                                                                                                             		
 
                                                                                                            Description
                                                                                                            
                                                                                                             		
 
                                                                                                            Table 1 Parameter Description
                                                                                                            Parameter
                                                                                                            
+
                                                                                                            Parameters
                                                                                                            
+
                                                                                                            
diff --git a/docs/dli/sqlreference/dli_08_0217.html b/docs/dli/sqlreference/dli_08_0217.html
index eb462306..43c4247c 100644
--- a/docs/dli/sqlreference/dli_08_0217.html
+++ b/docs/dli/sqlreference/dli_08_0217.html
@@ -8,8 +8,8 @@
 
 
-
                                                                                                            Keyword
                                                                                                            
-
                                                                                                            Table 1 Parameters
                                                                                                            Parameter
                                                                                                            
                                                                                                             		
 
                                                                                                            Mandatory
                                                                                                            
                                                                                                             		
 
                                                                                                            Table 1 Parameter
                                                                                                            Parameter
                                                                                                            
+
                                                                                                            Keywords
                                                                                                            
+
                                                                                                            
diff --git a/docs/dli/sqlreference/dli_08_0218.html b/docs/dli/sqlreference/dli_08_0218.html
index 5f003702..9c0f718f 100644
--- a/docs/dli/sqlreference/dli_08_0218.html
+++ b/docs/dli/sqlreference/dli_08_0218.html
@@ -143,9 +143,9 @@
 
                                                                                                            Description
                                                                                                            
 
-
                                                                                                            Table 1 Keywords
                                                                                                            Parameter
                                                                                                            
                                                                                                             		
 
                                                                                                            Description
                                                                                                            
                                                                                                             		
 
                                                                                                            Table 3 Parameter description
                                                                                                            Parameter
                                                                                                            
+
                                                                                                            
-
diff --git a/docs/dli/sqlreference/dli_08_0219.html b/docs/dli/sqlreference/dli_08_0219.html
index fbcfbfac..d47804ad 100644
--- a/docs/dli/sqlreference/dli_08_0219.html
+++ b/docs/dli/sqlreference/dli_08_0219.html
@@ -3,15 +3,15 @@
 
                                                                                                            SQL Syntax Overview of Batch Jobs
                                                                                                            This section describes the Spark SQL syntax list provided by DLI. For details about the parameters and examples, see the syntax description.
                                                                                                            
 
-
                                                                                                            Table 3 Parameters
                                                                                                            Parameter
                                                                                                            
 
                                                                                                            Parameter Description
                                                                                                            
+
                                                                                                            Description
                                                                                                            
                                                                                                             		
 
                                                                                                            
                                                                                                             
 
                                                                                                            Table 1 SQL syntax of batch jobs
                                                                                                            Classification
                                                                                                            
+
                                                                                                            
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
                                                                                                            Table 1 SQL syntax of batch jobs
                                                                                                            Classification
                                                                                                            
 
                                                                                                            Function
                                                                                                            
+
                                                                                                            Reference
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            Database-related Syntax
                                                                                                            
+
                                                                                                            Database-related Syntax
                                                                                                            
 
                                                                                                            Creating a Database
                                                                                                            
+
                                                                                                            Creating a Database
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            Deleting a Database
                                                                                                            
@@ -23,30 +23,30 @@
 
                                                                                                            Viewing All Databases
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Creating an OBS Table
                                                                                                            
+
                                                                                                            Syntax for Creating an OBS Table
                                                                                                            
 
                                                                                                            Creating an OBS Table Using the Datasource Syntax
                                                                                                            
+
                                                                                                            Creating an OBS Table Using the Datasource Syntax
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            Creating an OBS Table Using the Hive Syntax
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Creating a DLI Table
                                                                                                            
+
                                                                                                            Syntax for Creating a DLI Table
                                                                                                            
 
                                                                                                            Creating a DLI Table Using the Datasource Syntax
                                                                                                            
+
                                                                                                            Creating a DLI Table Using the Datasource Syntax
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            Creating a DLI Table Using the Hive Syntax
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Deleting a Table
                                                                                                            
+
                                                                                                            Syntax for Deleting a Table
                                                                                                            
 
                                                                                                            Deleting a Table
                                                                                                            
+
                                                                                                            Deleting a Table
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Viewing a Table
                                                                                                            
+
                                                                                                            Syntax for Viewing a Table
                                                                                                            
 
                                                                                                            Viewing All Tables
                                                                                                            
+
                                                                                                            Viewing All Tables
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            Viewing Table Creation Statements
                                                                                                            
@@ -64,14 +64,14 @@
 
                                                                                                            Viewing Table Statistics
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Modifying a Table
                                                                                                            
+
                                                                                                            Syntax for Modifying a Table
                                                                                                            
 
                                                                                                            Adding a Column
                                                                                                            
+
                                                                                                            Adding a Column
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Partitioning a Table
                                                                                                            
+
                                                                                                            Syntax for Partitioning a Table
                                                                                                            
 
                                                                                                            Adding a Partition (Only OBS Tables Supported)
                                                                                                            
+
                                                                                                            Adding a Partition (Only OBS Tables Supported)
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            Renaming a Partition
                                                                                                            
@@ -86,29 +86,29 @@
 
                                                                                                            Updating Partitioned Table Data (Only OBS Tables Supported)
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Importing Data
                                                                                                            
+
                                                                                                            Syntax for Importing Data
                                                                                                            
 
                                                                                                            Importing Data
                                                                                                            
+
                                                                                                            Importing Data
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Inserting Data
                                                                                                            
+
                                                                                                            Syntax for Inserting Data
                                                                                                            
 
                                                                                                            Inserting Data
                                                                                                            
+
                                                                                                            Inserting Data
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Clearing Data
                                                                                                            
+
                                                                                                            Syntax for Clearing Data
                                                                                                            
 
                                                                                                            Clearing Data
                                                                                                            
+
                                                                                                            Clearing Data
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Exporting Query Results
                                                                                                            
+
                                                                                                            Syntax for Exporting Query Results
                                                                                                            
 
                                                                                                            Exporting Query Result
                                                                                                            
+
                                                                                                            Exporting Query Result
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Datasource Connection to an HBase Table
                                                                                                            
+
                                                                                                            Syntax for Datasource Connection to an HBase Table
                                                                                                            
 
                                                                                                            Creating a Table and Associating It with HBase
                                                                                                            
+
                                                                                                            Creating a Table and Associating It with HBase
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            Inserting Data to an HBase Table
                                                                                                            
@@ -117,9 +117,9 @@
 
                                                                                                            Querying an HBase Table
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Datasource Connection to an OpenTSDB Table
                                                                                                            
+
                                                                                                            Syntax for Datasource Connection to an OpenTSDB Table
                                                                                                            
 
                                                                                                            Creating a Table and Associating It with OpenTSDB
                                                                                                            
+
                                                                                                            Creating a Table and Associating It with OpenTSDB
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            Inserting Data to an OpenTSDB Table
                                                                                                            
@@ -128,9 +128,9 @@
 
                                                                                                            Querying an OpenTSDB Table
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Datasource Connection to a DWS Table
                                                                                                            
+
                                                                                                            Syntax for Datasource Connection to a DWS Table
                                                                                                            
 
                                                                                                            Creating a Table and Associating It with DWS
                                                                                                            
+
                                                                                                            Creating a Table and Associating It with DWS
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            Inserting Data to a DWS Table
                                                                                                            
@@ -139,9 +139,9 @@
 
                                                                                                            Querying a DWS Table
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Datasource Connection to an RDS Table
                                                                                                            
+
                                                                                                            Syntax for Datasource Connection to an RDS Table
                                                                                                            
 
                                                                                                            Creating a Table and Associating It with RDS
                                                                                                            
+
                                                                                                            Creating a Table and Associating It with RDS
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            Inserting Data to an RDS Table
                                                                                                            
@@ -150,9 +150,9 @@
 
                                                                                                            Querying an RDS Table
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Datasource Connection to a CSS Table
                                                                                                            
+
                                                                                                            Syntax for Datasource Connection to a CSS Table
                                                                                                            
 
                                                                                                            Creating a Table and Associating It with CSS
                                                                                                            
+
                                                                                                            Creating a Table and Associating It with CSS
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            Inserting Data to a CSS Table
                                                                                                            
@@ -161,11 +161,11 @@
 
                                                                                                            Querying a CSS Table
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Datasource Connection to a DCS Table
                                                                                                            
+
                                                                                                            Syntax for Datasource Connection to a DCS Table
                                                                                                            
 
                                                                                                            
 
                                                                                                            
 
                                                                                                            Creating a Table and Associating It with DCS
                                                                                                            
+
                                                                                                            Creating a Table and Associating It with DCS
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            Inserting Data to a DCS Table
                                                                                                            
@@ -174,11 +174,11 @@
 
                                                                                                            Querying a DCS Table
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Datasource Connection to a DDS Table
                                                                                                            
+
                                                                                                            Syntax for Datasource Connection to a DDS Table
                                                                                                            
 
                                                                                                            
 
                                                                                                            
 
                                                                                                            Creating a Table and Associating It with DDS
                                                                                                            
+
                                                                                                            Creating a Table and Associating It with DDS
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            Inserting Data to a DDS Table
                                                                                                            
@@ -187,22 +187,22 @@
 
                                                                                                            Querying a DDS Table
                                                                                                            
                                                                                                             		
 
                                                                                                            View-related Syntax
                                                                                                            
+
                                                                                                            View-related Syntax
                                                                                                            
 
                                                                                                            Creating a View
                                                                                                            
+
                                                                                                            Creating a View
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            Deleting a View
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax for Viewing the Execution Plan
                                                                                                            
+
                                                                                                            Syntax for Viewing the Execution Plan
                                                                                                            
 
                                                                                                            Viewing the Execution Plan
                                                                                                            
+
                                                                                                            Viewing the Execution Plan
                                                                                                            
                                                                                                             		
 
                                                                                                            Syntax Related to Data Permissions
                                                                                                            
+
                                                                                                            Syntax Related to Data Permissions
                                                                                                            
 
                                                                                                            Creating a Role
                                                                                                            
+
                                                                                                            Creating a Role
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            Deleting a Role
                                                                                                            
@@ -229,12 +229,12 @@
 
                                                                                                            Displaying the Binding Relationship Between All Roles and Users
                                                                                                            
                                                                                                             		
 
                                                                                                            UDF-related Syntax
                                                                                                            
+
                                                                                                            UDF-related Syntax
                                                                                                            
 
                                                                                                            
 
                                                                                                            
 
                                                                                                            
 
                                                                                                            Creating a Function
                                                                                                            
+
                                                                                                            Creating a Function
                                                                                                            
                                                                                                             		
 
                                                                                                            
 
                                                                                                            Deleting a Function
                                                                                                            
@@ -246,9 +246,9 @@
 
                                                                                                            Displaying All Functions
                                                                                                            
                                                                                                             		
 
                                                                                                            Multiversion-related Syntax
                                                                                                            
+
                                                                                                            Multiversion-related Syntax
                                                                                                            
 
                                                                                                            Enabling Multiversion Backup When Creating an OBS Table
                                                                                                            
+
                                                                                                            Enabling Multiversion Backup When Creating an OBS Table
                                                                                                            
 
                                                                                                            Enabling or Disabling Multiversion Backup When Modifying a Table
                                                                                                            
 
                                                                                                            Setting the Retention Period for Multiversion Backup Data
                                                                                                            
 
                                                                                                            Viewing Multiversion Backup Data
                                                                                                            
diff --git a/docs/dli/sqlreference/dli_08_0221.html b/docs/dli/sqlreference/dli_08_0221.html
index e4c5a683..d8a9a648 100644
--- a/docs/dli/sqlreference/dli_08_0221.html
+++ b/docs/dli/sqlreference/dli_08_0221.html
@@ -9,6 +9,8 @@
 
 
                                                                                                          • SQL Syntax Overview of Batch Jobs
                                                                                                            
 
                                                                                                            • 
+
                                                                                                          • Spark Open Source Commands
                                                                                                            
+
                                                                                                            • 
 
                                                                                                          • Databases
                                                                                                            
 
                                                                                                            • 
 
                                                                                                          • Creating an OBS Table
                                                                                                            
@@ -33,6 +35,8 @@
 
                                                                                                            • 
 
                                                                                                          • Backing Up and Restoring Data of Multiple Versions
                                                                                                            
 
                                                                                                            • 
+
                                                                                                          • Table Lifecycle Management
                                                                                                            
+
                                                                                                            • 
 
                                                                                                          • Creating a Datasource Connection with an HBase Table
                                                                                                            
 
                                                                                                            • 
 
                                                                                                          • Creating a Datasource Connection with an OpenTSDB Table
                                                                                                            
@@ -47,6 +51,8 @@
 
                                                                                                            • 
 
                                                                                                          • Creating a Datasource Connection with a DDS Table
                                                                                                            
 
                                                                                                            • 
+
                                                                                                          • Creating a Datasource Connection with an Oracle Table
                                                                                                            
+
                                                                                                            • 
 
                                                                                                          • Views
                                                                                                            
 
                                                                                                            • 
 
                                                                                                          • Viewing the Execution Plan
                                                                                                            
diff --git a/docs/dli/sqlreference/dli_08_0226.html b/docs/dli/sqlreference/dli_08_0226.html
index 6c40086d..e74dfc37 100644
--- a/docs/dli/sqlreference/dli_08_0226.html
+++ b/docs/dli/sqlreference/dli_08_0226.html
@@ -2,6 +2,8 @@
 
 
                                                                                                            Creating a DLI Table and Associating It with DCS
                                                                                                            
 
                                                                                                            Function
                                                                                                            This statement is used to create a DLI table and associate it with an existing DCS key.
                                                                                                            
+
                                                                                                             
                                                                                                            In Spark cross-source development scenarios, there is a risk of password leakage if datasource authentication information is directly configured. You are advised to use the datasource authentication provided by DLI.
                                                                                                            
+
                                                                                                            
 
                                                                                                            
 
                                                                                                            Prerequisites
                                                                                                            Before creating a DLI table and associating it with DCS, you need to create a datasource connection and bind it to a queue. For details about operations on the management console, see 
                                                                                                            
 
                                                                                                            
@@ -55,8 +57,8 @@
 
                                                                                                            
 
                                                                                                            • 
 
-
                                                                                                            Keyword
                                                                                                            
-
                                                                                                            Table 1 CREATE TABLE parameter description
                                                                                                            Parameter
                                                                                                            
+
                                                                                                            Keywords
                                                                                                            
+
                                                                                                            
@@ -134,7 +136,7 @@
 
                                                                                                            • Place the fields of the next level in the Schema field of the same level.
                                                                                                            • Write and read data in binary mode, and encode and decode it using user-defined functions.
                                                                                                            
-
                                                                                                            Example
                                                                                                            • Specified table
                                                                                                            
+
                                                                                                            Example
                                                                                                            • Specifying a table
                                                                                                            
 
                                                                                                            Table 1 CREATE TABLE keywords
                                                                                                            Parameter
                                                                                                            
                                                                                                             		
 
                                                                                                            Description
                                                                                                            
                                                                                                             		
 
 
                                                                                                            1
 2
 3
@@ -151,7 +153,7 @@
 
                                                                                                            
 
 
                                                                                                            
-
                                                                                                            • Wildcard table name
                                                                                                            
+
                                                                                                            • Wildcarding the table name
                                                                                                            
 
                                                                                                            1
 2
 3
diff --git a/docs/dli/sqlreference/dli_08_0227.html b/docs/dli/sqlreference/dli_08_0227.html
index 57c03bac..eaabd89d 100644
--- a/docs/dli/sqlreference/dli_08_0227.html
+++ b/docs/dli/sqlreference/dli_08_0227.html
@@ -29,8 +29,8 @@
 
                                                                                                            
 
                                                                                                            Keywords
                                                                                                            For details about the SELECT keywords, see Basic SELECT Statements.
                                                                                                            
 
                                                                                                            
-
                                                                                                            Parameter description
                                                                                                            
-
                                                                                                            Table 1 Parameter description
                                                                                                            Parameter
                                                                                                            
+
                                                                                                            Parameters
                                                                                                            
+
                                                                                                            
@@ -70,7 +70,7 @@
 
                                                                                                            Table 1 Parameters
                                                                                                            Parameter
                                                                                                            
                                                                                                             		
 
                                                                                                            Description
                                                                                                            
 
                                                                                                            
 
                                                                                                            
 
                                                                                                            
-
                                                                                                            Precautions
                                                                                                            • The target DLI table must exist.
                                                                                                            • When creating a DLI table, you need to specify the schema information.
                                                                                                            • If key.column is specified during table creation, the value of the specified field is used as a part of the Redis key name. The following is an example:
                                                                                                              1
+
                                                                                                              Precautions
                                                                                                              • A DLI table is available.
                                                                                                              • When creating a DLI table, you need to specify the schema information.
                                                                                                              • If key.column is specified during table creation, the value of the specified field is used as a part of the Redis key name. The following is an example:
                                                                                                                1
 2
 3
 4
@@ -80,7 +80,7 @@
 8
                                                                                                                create table test_redis(name string, age int) using redis options(
   'host' = '192.168.4.199',
   'port' = '6379',
-  'password' = '******',
+  'passwdauth' = '******',
   'table' = 'test_with_key_column',
   'key.column' = 'name'
 );
@@ -100,7 +100,7 @@
 7
                                                                                                                create table test_redis(name string, age int) using redis options(
   'host' = '192.168.7.238',
   'port' = '6379',
-  'password' = '******',
+  'passwdauth' = '******',
   'table' = 'test_without_key_column'
 );
 insert into test_redis values("James", 35), ("Michael", 22);
diff --git a/docs/dli/sqlreference/dli_08_0228.html b/docs/dli/sqlreference/dli_08_0228.html
index 1dbb8bc1..defcd693 100644
--- a/docs/dli/sqlreference/dli_08_0228.html
+++ b/docs/dli/sqlreference/dli_08_0228.html
@@ -7,7 +7,7 @@
 
 
                                                                                                                
 
-
                                                                                                                Keyword
                                                                                                                LIMIT is used to limit the query results. Only INT type is supported by the number parameter.
                                                                                                                
+
                                                                                                                Keywords
                                                                                                                LIMIT is used to limit the query results. Only INT type is supported by the number parameter.
                                                                                                                
 
                                                                                                                
 
                                                                                                                Example
                                                                                                                Query data in the test_redis table.
                                                                                                                
 
                                                                                                                1
                                                                                                                SELECT * FROM test_redis limit 100;
diff --git a/docs/dli/sqlreference/dli_08_0230.html b/docs/dli/sqlreference/dli_08_0230.html
index 4bcdb6e6..b70fdd08 100644
--- a/docs/dli/sqlreference/dli_08_0230.html
+++ b/docs/dli/sqlreference/dli_08_0230.html
@@ -2,6 +2,8 @@
 
 
                                                                                                                Creating a DLI Table and Associating It with DDS
                                                                                                                
 
                                                                                                                Function
                                                                                                                This statement is used to create a DLI table and associate it with an existing DDS collection.
                                                                                                                
+
                                                                                                                 
                                                                                                                In Spark cross-source development scenarios, there is a risk of password leakage if datasource authentication information is directly configured. You are advised to use the datasource authentication provided by DLI.
                                                                                                                
+
                                                                                                                
 
                                                                                                                
 
                                                                                                                Prerequisites
                                                                                                                Before creating a DLI table and associating it with DDS, you need to create a datasource connection and bind it to a queue. For details about operations on the management console, see 
                                                                                                                
 
                                                                                                                
@@ -27,9 +29,11 @@
 
                                                                                                                
 
 
                                                                                                                
+
                                                                                                                 
                                                                                                                Document Database Service (DDS) is fully compatible with the MongoDB protocol. Therefore, the syntax used is using mongo options.
                                                                                                                
+
                                                                                                                
 
                                                                                                                
-
                                                                                                                Keyword
                                                                                                                
-
                                                                                                                Table 1 CREATE TABLE parameter description
                                                                                                                Parameter
                                                                                                                
+
                                                                                                                Keywords
                                                                                                                
+
                                                                                                                
@@ -84,7 +88,7 @@
 345
-6
                                                                                                                Table 1 CREATE TABLE keywords
                                                                                                                Parameter
                                                                                                                
                                                                                                                 		
 
                                                                                                                Description
                                                                                                                
                                                                                                                 		
 
 
                                                                                                                create table 1_datasource_mongo.test_mongo(id string, name string, age int) using mongo options(
+6
                                                                                                                create table 1_datasource.test_table1(id string, name string, age int) using mongo options(
   'url' = '192.168.4.62:8635,192.168.5.134:8635/test?authSource=admin',
   'database' = 'test',
   'collection' = 'test',
diff --git a/docs/dli/sqlreference/dli_08_0231.html b/docs/dli/sqlreference/dli_08_0231.html
index 3f66569e..03765924 100644
--- a/docs/dli/sqlreference/dli_08_0231.html
+++ b/docs/dli/sqlreference/dli_08_0231.html
@@ -46,8 +46,8 @@
 
                                                                                                                
 
                                                                                                                Keywords
                                                                                                                For details about the SELECT keywords, see Basic SELECT Statements.
                                                                                                                
 
                                                                                                                
-
                                                                                                                Parameter description
                                                                                                                
-
                                                                                                                Table 1 Parameter description
                                                                                                                Parameter
                                                                                                                
+
                                                                                                                Parameters
                                                                                                                
+
                                                                                                                
@@ -87,7 +87,7 @@
 
                                                                                                                Table 1 Parameters
                                                                                                                Parameter
                                                                                                                
                                                                                                                 		
 
                                                                                                                Description
                                                                                                                
 
                                                                                                                
 
                                                                                                                
 
                                                                                                                
-
                                                                                                                Precautions
                                                                                                                The target DLI table must exist.
                                                                                                                
+
                                                                                                                Precautions
                                                                                                                A DLI table is available.
                                                                                                                
 
                                                                                                                
 
                                                                                                                Example
                                                                                                                • Query data in the user table and insert the data into the test table.
                                                                                                                  1
 2
diff --git a/docs/dli/sqlreference/dli_08_0232.html b/docs/dli/sqlreference/dli_08_0232.html
index 063a7b29..29ceae7b 100644
--- a/docs/dli/sqlreference/dli_08_0232.html
+++ b/docs/dli/sqlreference/dli_08_0232.html
@@ -7,12 +7,12 @@
 
 
                                                                                                                  
 
-
                                                                                                                  Keyword
                                                                                                                  LIMIT is used to limit the query results. Only INT type is supported by the number parameter.
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  LIMIT is used to limit the query results. Only INT type is supported by the number parameter.
                                                                                                                  
 
                                                                                                                  
 
                                                                                                                  Precautions
                                                                                                                  If schema information is not specified during table creation, the query result contains the _id field for storing _id in the DOC file.
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Example
                                                                                                                  Query data in the test_mongo table.
                                                                                                                  
-
                                                                                                                  1
                                                                                                                  SELECT * FROM test_mongo limit 100;
+
                                                                                                                  Example
                                                                                                                  Query data in the test_table1 table.
                                                                                                                  
+
                                                                                                                  1
                                                                                                                  SELECT * FROM test_table1 limit 100;
 
                                                                                                                  
 
 
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0235.html b/docs/dli/sqlreference/dli_08_0235.html
index 4d73ef49..3910817c 100644
--- a/docs/dli/sqlreference/dli_08_0235.html
+++ b/docs/dli/sqlreference/dli_08_0235.html
@@ -14,8 +14,8 @@
     field_delimiter = "",
     offset= "");
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
@@ -69,7 +69,7 @@
 
-
diff --git a/docs/dli/sqlreference/dli_08_0236.html b/docs/dli/sqlreference/dli_08_0236.html
index 9690f527..8c4826dd 100644
--- a/docs/dli/sqlreference/dli_08_0236.html
+++ b/docs/dli/sqlreference/dli_08_0236.html
@@ -27,8 +27,8 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  No
                                                                                                                  
 
                                                                                                                  Range of partitions of a DIS stream, data in which is ingested by the DLI job. This parameter and partition_count cannot be configured at the same time. If this parameter is not specified, data of all partitions is read by default.
                                                                                                                  
+
                                                                                                                  Range of partitions of a DIS stream, data in which is ingested by the DLI job. This parameter and partition_count cannot be configured at the same time. If this parameter is not specified, data of all partitions is read by default.
                                                                                                                  
 
                                                                                                                  If you set this parameter to [0:2], data will be read from partitions 1, 2, and 3.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0237.html b/docs/dli/sqlreference/dli_08_0237.html
index 652ba7c3..d95e7745 100644
--- a/docs/dli/sqlreference/dli_08_0237.html
+++ b/docs/dli/sqlreference/dli_08_0237.html
@@ -27,8 +27,8 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0238.html b/docs/dli/sqlreference/dli_08_0238.html
index 7b990eb5..bd437637 100644
--- a/docs/dli/sqlreference/dli_08_0238.html
+++ b/docs/dli/sqlreference/dli_08_0238.html
@@ -27,8 +27,8 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0239.html b/docs/dli/sqlreference/dli_08_0239.html
index 8d43f192..ca3e34f4 100644
--- a/docs/dli/sqlreference/dli_08_0239.html
+++ b/docs/dli/sqlreference/dli_08_0239.html
@@ -30,7 +30,7 @@
 
                                                                                                                  Keywords
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0241.html b/docs/dli/sqlreference/dli_08_0241.html
index 8550f079..027a643b 100644
--- a/docs/dli/sqlreference/dli_08_0241.html
+++ b/docs/dli/sqlreference/dli_08_0241.html
@@ -25,8 +25,8 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0242.html b/docs/dli/sqlreference/dli_08_0242.html
index 82374f80..021f536f 100644
--- a/docs/dli/sqlreference/dli_08_0242.html
+++ b/docs/dli/sqlreference/dli_08_0242.html
@@ -47,8 +47,8 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0243.html b/docs/dli/sqlreference/dli_08_0243.html
index ccd0b678..496822dd 100644
--- a/docs/dli/sqlreference/dli_08_0243.html
+++ b/docs/dli/sqlreference/dli_08_0243.html
@@ -29,8 +29,8 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0244.html b/docs/dli/sqlreference/dli_08_0244.html
index d827986b..40b0861d 100644
--- a/docs/dli/sqlreference/dli_08_0244.html
+++ b/docs/dli/sqlreference/dli_08_0244.html
@@ -33,8 +33,8 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0245.html b/docs/dli/sqlreference/dli_08_0245.html
index a33e06c8..c24c26a9 100644
--- a/docs/dli/sqlreference/dli_08_0245.html
+++ b/docs/dli/sqlreference/dli_08_0245.html
@@ -31,8 +31,8 @@
 
                                                                                                                  
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0247.html b/docs/dli/sqlreference/dli_08_0247.html
index aa8f0e78..7181f366 100644
--- a/docs/dli/sqlreference/dli_08_0247.html
+++ b/docs/dli/sqlreference/dli_08_0247.html
@@ -28,8 +28,8 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0248.html b/docs/dli/sqlreference/dli_08_0248.html
index 98379b5b..593a0f15 100644
--- a/docs/dli/sqlreference/dli_08_0248.html
+++ b/docs/dli/sqlreference/dli_08_0248.html
@@ -52,8 +52,8 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0249.html b/docs/dli/sqlreference/dli_08_0249.html
index d1412e61..591976e9 100644
--- a/docs/dli/sqlreference/dli_08_0249.html
+++ b/docs/dli/sqlreference/dli_08_0249.html
@@ -29,8 +29,8 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0251.html b/docs/dli/sqlreference/dli_08_0251.html
index d6660a9b..65b52b31 100644
--- a/docs/dli/sqlreference/dli_08_0251.html
+++ b/docs/dli/sqlreference/dli_08_0251.html
@@ -27,8 +27,8 @@
 
                                                                                                                  
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0252.html b/docs/dli/sqlreference/dli_08_0252.html
index d5c1fb32..06ca58a5 100644
--- a/docs/dli/sqlreference/dli_08_0252.html
+++ b/docs/dli/sqlreference/dli_08_0252.html
@@ -36,8 +36,8 @@
 
                                                                                                                  
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0253.html b/docs/dli/sqlreference/dli_08_0253.html
index af9cf0a7..621f98e6 100644
--- a/docs/dli/sqlreference/dli_08_0253.html
+++ b/docs/dli/sqlreference/dli_08_0253.html
@@ -31,8 +31,8 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0254.html b/docs/dli/sqlreference/dli_08_0254.html
index 7d850609..466dee04 100644
--- a/docs/dli/sqlreference/dli_08_0254.html
+++ b/docs/dli/sqlreference/dli_08_0254.html
@@ -26,8 +26,8 @@
 
                                                                                                                  
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0255.html b/docs/dli/sqlreference/dli_08_0255.html
index 1c4bec7b..b1663ecb 100644
--- a/docs/dli/sqlreference/dli_08_0255.html
+++ b/docs/dli/sqlreference/dli_08_0255.html
@@ -33,8 +33,8 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0257.html b/docs/dli/sqlreference/dli_08_0257.html
index b5af03d5..8fec1b8e 100644
--- a/docs/dli/sqlreference/dli_08_0257.html
+++ b/docs/dli/sqlreference/dli_08_0257.html
@@ -25,8 +25,8 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0260.html b/docs/dli/sqlreference/dli_08_0260.html
index 162f887b..5a05c906 100644
--- a/docs/dli/sqlreference/dli_08_0260.html
+++ b/docs/dli/sqlreference/dli_08_0260.html
@@ -18,8 +18,8 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0261.html b/docs/dli/sqlreference/dli_08_0261.html
index 0244e656..14f34e43 100644
--- a/docs/dli/sqlreference/dli_08_0261.html
+++ b/docs/dli/sqlreference/dli_08_0261.html
@@ -38,8 +38,8 @@
 
                                                                                                                  
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0262.html b/docs/dli/sqlreference/dli_08_0262.html
index 79cf5ef4..69bd28bb 100644
--- a/docs/dli/sqlreference/dli_08_0262.html
+++ b/docs/dli/sqlreference/dli_08_0262.html
@@ -7,6 +7,8 @@
 
diff --git a/docs/dli/sqlreference/dli_08_0263.html b/docs/dli/sqlreference/dli_08_0263.html
index 2c82c1ad..4fc189a5 100644
--- a/docs/dli/sqlreference/dli_08_0263.html
+++ b/docs/dli/sqlreference/dli_08_0263.html
@@ -8,10 +8,10 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  • ADD COLUMNS: columns to add
                                                                                                                  • COMMENT: column description
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  • ADD COLUMNS: columns to add
                                                                                                                  • COMMENT: column description
                                                                                                                  
 
                                                                                                                  
 
                                                                                                                  Parameters
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Parameter description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0267.html b/docs/dli/sqlreference/dli_08_0267.html
index 1a06d0ca..e0ecba5d 100644
--- a/docs/dli/sqlreference/dli_08_0267.html
+++ b/docs/dli/sqlreference/dli_08_0267.html
@@ -26,7 +26,7 @@
 
                                                                                                                  Keywords
                                                                                                                  
-
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Description
                                                                                                                  
                                                                                                                   		
 
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0273.html b/docs/dli/sqlreference/dli_08_0273.html
index ba9d7fbe..54f5e88d 100644
--- a/docs/dli/sqlreference/dli_08_0273.html
+++ b/docs/dli/sqlreference/dli_08_0273.html
@@ -19,8 +19,8 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0274.html b/docs/dli/sqlreference/dli_08_0274.html
index 4bb9610b..8dc22e30 100644
--- a/docs/dli/sqlreference/dli_08_0274.html
+++ b/docs/dli/sqlreference/dli_08_0274.html
@@ -9,8 +9,8 @@
     type_class_parameter = ""
   );
-
                                                                                                                  Keyword
                                                                                                                  
-
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0283.html b/docs/dli/sqlreference/dli_08_0283.html
index 92f8b2e7..bde9bdd7 100644
--- a/docs/dli/sqlreference/dli_08_0283.html
+++ b/docs/dli/sqlreference/dli_08_0283.html
@@ -7,18 +7,31 @@
 234
-5
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
 
                                                                                                                  CREATE [TEMPORARY] FUNCTION [db_name.]function_name AS class_name
+5
                                                                                                                  CREATE FUNCTION [db_name.]function_name AS class_name
   [USING resource,...]
 
 resource: 
-  : (JAR|FILE|ARCHIVE)file_uri
+  : JAR file_uri
+
                                                                                                                  
+
+
                                                                                                                  
+
                                                                                                                  Or
                                                                                                                  
+
                                                                                                                  1
+2
+3
+4
+5
                                                                                                                  CREATE OR REPLACE FUNCTION [db_name.]function_name AS class_name
+  [USING resource,...]
+
+resource: 
+  : JAR file_uri
 
                                                                                                                  
 
 
                                                                                                                  
 
 
                                                                                                                  Precautions
                                                                                                                  • If a function with the same name exists in the database, the system reports an error.
                                                                                                                  • Only the Hive syntax can be used to create functions.
                                                                                                                  • If you specify the same class name for two UDFs, the functions conflict though the package names are different. Avoid this problem because it causes failure of job execution.
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Keywords
                                                                                                                  • TEMPORARY: The created function is available only in the current session and is not persisted to the underlying metabase, if any. The database name cannot be specified for a temporary function.
                                                                                                                  • USING <resources>: resources to be loaded. It can be a list of JARs, files, or URIs.
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  • USING <resources>: resources to be loaded. It can be a list of JARs, files, or URIs.
                                                                                                                  
 
                                                                                                                  
 
                                                                                                                  Example
                                                                                                                  Create the mergeBill function.
                                                                                                                  
 
                                                                                                                  1
diff --git a/docs/dli/sqlreference/dli_08_0285.html b/docs/dli/sqlreference/dli_08_0285.html
index a7b45259..a3c10bae 100644
--- a/docs/dli/sqlreference/dli_08_0285.html
+++ b/docs/dli/sqlreference/dli_08_0285.html
@@ -10,7 +10,7 @@
 
                                                                                                                  
 
                                                                                                                  In the preceding statement, regex is a regular expression. For details about its parameters, see Table 1.
                                                                                                                  
 
-
                                                                                                                  Table 1 Parameter examples
                                                                                                                  Expression
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0286.html b/docs/dli/sqlreference/dli_08_0286.html
index 662c75ac..0427e222 100644
--- a/docs/dli/sqlreference/dli_08_0286.html
+++ b/docs/dli/sqlreference/dli_08_0286.html
@@ -31,7 +31,7 @@
 
                                                                                                                  Keywords
                                                                                                                  
-
                                                                                                                  Table 1 regex parameters
                                                                                                                  Expression
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Description
                                                                                                                  
                                                                                                                   		
 
 
                                                                                                                  Table 1 Keyword description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0343.html b/docs/dli/sqlreference/dli_08_0343.html
index 3ad617fb..a64667fb 100644
--- a/docs/dli/sqlreference/dli_08_0343.html
+++ b/docs/dli/sqlreference/dli_08_0343.html
@@ -1,9 +1,9 @@
 
 
-
                                                                                                                  Deleting Partitions by Specifying Filter Criteria (Only OBS Tables Supported)
                                                                                                                  
+
                                                                                                                  Deleting Partitions by Specifying Filter Criteria (Only Supported on OBS Tables)
                                                                                                                  Function
                                                                                                                  This statement is used to delete one or more partitions based on specified conditions.
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Precautions
                                                                                                                  • This statement is used for OBS table operations only.
                                                                                                                  • The table in which partitions are to be deleted must exist. Otherwise, an error is reported.
                                                                                                                  • The to-be-deleted partition must exist. Otherwise, an error is reported. To avoid this error, add IF EXISTS in this statement.
                                                                                                                  
+
                                                                                                                  Precautions
                                                                                                                  • This statement is only used for OBS tables.
                                                                                                                  • The table in which partitions are to be deleted must exist. Otherwise, an error is reported.
                                                                                                                  • The partition to be deleted must exist. Otherwise, an error is reported. To avoid this error, add IF EXISTS to this statement.
                                                                                                                  
 
                                                                                                                  
 
                                                                                                                  Syntax
                                                                                                                  Table 1 Keywords
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Mandatory
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  1
 2
@@ -14,10 +14,10 @@
 
 
                                                                                                                  
 
-
                                                                                                                  Keyword
                                                                                                                  • DROP: deletes specified partitions.
                                                                                                                  • IF EXISTS: Partitions to be deleted must exist. Otherwise, an error is reported.
                                                                                                                  • PARTITIONS: specifies partitions meeting the conditions
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  • DROP: deletes specified partitions.
                                                                                                                  • IF EXISTS: Partitions to be deleted must exist. Otherwise, an error is reported.
                                                                                                                  • PARTITIONS: specifies partitions meeting the conditions
                                                                                                                  
 
                                                                                                                  
 
                                                                                                                  Parameters
                                                                                                                  
-
                                                                                                                  Table 1 Parameter description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  
@@ -37,9 +37,10 @@
 
@@ -47,25 +48,308 @@
 
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Description
                                                                                                                  
 
                                                                                                                  partition_filtercondition
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Condition used to search partitions to be deleted. The format is as follows:
                                                                                                                  
-
                                                                                                                  • Partition column name Operator Value to compare
                                                                                                                    Example: start_date < '201911'
                                                                                                                    
-
                                                                                                                  • <partition_filtercondition1> AND|OR <partition_filtercondition2>
                                                                                                                    Example: start_date < '201911' OR start_date >= '202006'
                                                                                                                    
-
                                                                                                                  • (<partition_filtercondition1>) [,partitions (<partition_filtercondition2>), ...]
                                                                                                                    Example: (start_date <> '202007'), partitions(start_date < '201912')
                                                                                                                    
+
                                                                                                                    Partition column name Operator Value to compare
                                                                                                                    
+
                                                                                                                    Example: start_date < '201911'
                                                                                                                    
+
                                                                                                                    • Example 1: <partition_filtercondition1> AND|OR <partition_filtercondition2>
                                                                                                                      Example: start_date < '201911' OR start_date >= '202006'
                                                                                                                      
+
                                                                                                                    • Example 2: (<partition_filtercondition1>)[,partitions (<partition_filtercondition2>), ...]
                                                                                                                      Example: (start_date <> '202007'), partitions(start_date < '201912')
                                                                                                                      
 
                                                                                                                    
 
                                                                                                                  		
 
                                                                                                                  
 
                                                                                                                  
 
-
                                                                                                                  Example
                                                                                                                  You can run the following statements to delete partitions of the student table using different conditions:
                                                                                                                  
-
                                                                                                                  1
+
                                                                                                                  Example
                                                                                                                  To help you understand how to use this statement, this section provides an example of deleting a partition from the source data.
                                                                                                                  
+
                                                                                                                  1. Use the DataSource syntax to create an OBS partitioned table.
                                                                                                                    An OBS partitioned table named student is created, which contains the student ID (id), student name (name), student faculty number (facultyNo), and student class number (classNo) and uses facultyNo and classNo for partitioning.
                                                                                                                    
+
                                                                                                                    1
 2
 3
 4
 5
 6
 7
-8
                                                                                                                    alter table student drop partitions(start_date < '201911');
-alter table student drop partitions(start_date >= '202007');
-alter table student drop partitions(start_date BETWEEN '202001' AND '202007');
-alter table student drop partitions(start_date < '201912' OR start_date >= '202006');
-alter table student drop partitions(start_date > '201912' AND start_date <= '202004');
-alter table student drop partitions(start_date != '202007');
-alter table student drop partitions(start_date <> '202007');
-alter table student drop partitions(start_date <> '202007'), partitions(start_date < '201912');
+8
                                                                                                                    create table if not exists student (
+id int,
+name STRING,
+facultyNo int,
+classNo INT)
+using csv
+options (path 'path 'obs://bucketName/filePath'')
+partitioned by (faculytNo, classNo);
 
                                                                                                                    
 
 
                                                                                                                    
+
                                                                                                                  2. Insert partition data into the table.
                                                                                                                    You can insert the following data:
                                                                                                                    
+
                                                                                                                     1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+10
+11
+12
+13
+14
+15
+16
+17
+18
+19
+20
+21
+22
+23
+24
+25
+26
+27
                                                                                                                    INSERT into student
+partition (facultyNo = 10, classNo = 101)
+values (1010101, "student01"), (1010102, "student02");
+
+INSERT into student
+partition (facultyNo = 10, classNo = 102)
+values (1010203, "student03"), (1010204, "student04");
+
+INSERT into student
+partition (facultyNo = 20, classNo = 101)
+values (2010105, "student05"), (2010106, "student06");
+
+INSERT into student
+partition (facultyNo = 20, classNo = 102)
+values (2010207, "student07"), (2010208, "student08");
+
+INSERT into student
+partition (facultyNo = 20, classNo = 103)
+values (2010309, "student09"), (2010310, "student10");
+
+INSERT into student
+partition (facultyNo = 30, classNo = 101)
+values (3010111, "student11"), (3010112, "student12");
+
+INSERT into student
+partition (facultyNo = 30, classNo = 102)
+values (3010213, "student13"), (3010214, "student14");
+
                                                                                                                    
+
+
                                                                                                                    
+
                                                                                                                  3. View the partitions.
                                                                                                                    You can view all partitions in the table.
                                                                                                                    
+
                                                                                                                    The example code is as follows:
                                                                                                                    
+
                                                                                                                    SHOW partitions student;
                                                                                                                    
+
+
                                                                                                                    
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                    Table 2 Example table data
                                                                                                                    facultyNo
                                                                                                                    
+
                                                                                                                    classNo
                                                                                                                    
+
                                                                                                                    facultyNo=10
                                                                                                                    
+
                                                                                                                    classNo=101
                                                                                                                    
+
                                                                                                                    facultyNo=10
                                                                                                                    
+
                                                                                                                    classNo=102
                                                                                                                    
+
                                                                                                                    facultyNo=20
                                                                                                                    
+
                                                                                                                    classNo=101
                                                                                                                    
+
                                                                                                                    facultyNo=20
                                                                                                                    
+
                                                                                                                    classNo=102
                                                                                                                    
+
                                                                                                                    facultyNo=20
                                                                                                                    
+
                                                                                                                    classNo=103
                                                                                                                    
+
                                                                                                                    facultyNo=30
                                                                                                                    
+
                                                                                                                    classNo=101
                                                                                                                    
+
                                                                                                                    facultyNo=30
                                                                                                                    
+
                                                                                                                    classNo=102
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                  4. Delete a partition.
                                                                                                                     
                                                                                                                    This step describes how to delete a partition by specifying filter criteria. If you want to delete a partition without specifying filter criteria, see Deleting a Partition.
                                                                                                                    
+
                                                                                                                    This example cannot be used together with that in Deleting a Partition. Distinguish the keyword partitions in this example from the keyword partition in the example in Deleting a Partition.
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                    • Example 1: deleting partitions by specifying filter criteria (only supported on OBS tables), and using the AND statement to delete partitions
+
                                                                                                                      
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                      Table 3 Data before execution
                                                                                                                      facultyNo
                                                                                                                      
+
                                                                                                                      classNo
                                                                                                                      
+
                                                                                                                      facultyNo=10
                                                                                                                      
+
                                                                                                                      classNo=101
                                                                                                                      
+
                                                                                                                      facultyNo=10
                                                                                                                      
+
                                                                                                                      classNo=102
                                                                                                                      
+
                                                                                                                      facultyNo=20
                                                                                                                      
+
                                                                                                                      classNo=101
                                                                                                                      
+
                                                                                                                      facultyNo=20
                                                                                                                      
+
                                                                                                                      classNo=102
                                                                                                                      
+
                                                                                                                      
+
                                                                                                                      
+
                                                                                                                      Run the following statements to delete the partitions whose facultyNo is 20 and classNo is 102:
                                                                                                                      
+
                                                                                                                      ALTER TABLE student
+DROP IF EXISTS
+PARTITIONS (facultyNo = 20 AND classNo = 102);
                                                                                                                      
+
                                                                                                                      You can see that the statement deletes the partitions that meet both the criteria.
                                                                                                                      
+
+
                                                                                                                      
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                      Table 4 Data after execution
                                                                                                                      facultyNo
                                                                                                                      
+
                                                                                                                      classNo
                                                                                                                      
+
                                                                                                                      facultyNo=10
                                                                                                                      
+
                                                                                                                      classNo=101
                                                                                                                      
+
                                                                                                                      facultyNo=10
                                                                                                                      
+
                                                                                                                      classNo=102
                                                                                                                      
+
                                                                                                                      facultyNo=20
                                                                                                                      
+
                                                                                                                      classNo=101
                                                                                                                      
+
                                                                                                                      
+
                                                                                                                      
+
                                                                                                                    • Example 2: deleting partitions by specifying filter criteria (only supported on OBS tables), and using the OR statement to delete partitions
+
                                                                                                                      
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                      Table 5 Data before execution
                                                                                                                      facultyNo
                                                                                                                      
+
                                                                                                                      classNo
                                                                                                                      
+
                                                                                                                      facultyNo=10
                                                                                                                      
+
                                                                                                                      classNo=101
                                                                                                                      
+
                                                                                                                      facultyNo=10
                                                                                                                      
+
                                                                                                                      classNo=102
                                                                                                                      
+
                                                                                                                      facultyNo=20
                                                                                                                      
+
                                                                                                                      classNo=101
                                                                                                                      
+
                                                                                                                      facultyNo=20
                                                                                                                      
+
                                                                                                                      classNo=102
                                                                                                                      
+
                                                                                                                      
+
                                                                                                                      
+
                                                                                                                      Run the following statements to delete the partitions whose facultyNo is 10 or classNo is 101:
                                                                                                                      
+
                                                                                                                      ALTER TABLE student 
+DROP IF EXISTS
+PARTITIONS (facultyNo = 10),
+PARTITIONS (classNo = 101);
                                                                                                                      
+
                                                                                                                      Execution result:
                                                                                                                      
+
+
                                                                                                                      
+
+
+
+
+
+
+
+
                                                                                                                      Table 6 Data after execution
                                                                                                                      facultyNo
                                                                                                                      
+
                                                                                                                      classNo
                                                                                                                      
+
                                                                                                                      facultyNo=20
                                                                                                                      
+
                                                                                                                      classNo=102
                                                                                                                      
+
                                                                                                                      
+
                                                                                                                      
+
                                                                                                                      Under the selected deletion criteria, the first record in the partition meets both facultyNo and classNo, the second record meets facultyNo, and the third record meets classNo.
                                                                                                                      
+
                                                                                                                      As a result, only one partition row remains after executing the partition deletion statement.
                                                                                                                      
+
                                                                                                                      According to method 1, the foregoing execution statement may also be written as:
                                                                                                                      
+
                                                                                                                      ALTER TABLE student
+DROP IF EXISTS
+PARTITIONS (facultyNo = 10 OR classNo = 101);
                                                                                                                      
+
                                                                                                                    • Example 3: deleting partitions by specifying filter criteria (only supported on OBS tables), and using relational operator statements to delete specified partitions
+
                                                                                                                      
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                      Table 7 Data before execution
                                                                                                                      facultyNo
                                                                                                                      
+
                                                                                                                      classNo
                                                                                                                      
+
                                                                                                                      facultyNo=10
                                                                                                                      
+
                                                                                                                      classNo=101
                                                                                                                      
+
                                                                                                                      facultyNo=10
                                                                                                                      
+
                                                                                                                      classNo=102
                                                                                                                      
+
                                                                                                                      facultyNo=20
                                                                                                                      
+
                                                                                                                      classNo=101
                                                                                                                      
+
                                                                                                                      facultyNo=20
                                                                                                                      
+
                                                                                                                      classNo=102
                                                                                                                      
+
                                                                                                                      facultyNo=20
                                                                                                                      
+
                                                                                                                      classNo=103
                                                                                                                      
+
                                                                                                                      
+
                                                                                                                      
+
                                                                                                                      Run the following statements to delete partitions whose classNo is greater than 100 and less than 102:
                                                                                                                      
+
                                                                                                                      ALTER TABLE student
+DROP IF EXISTS
+PARTITIONS (classNo BETWEEN 100 AND 102);
                                                                                                                      
+
                                                                                                                      Execution result:
                                                                                                                      
+
+
                                                                                                                      
+
+
+
+
+
+
+
+
                                                                                                                      Table 8 Data before execution
                                                                                                                      facultyNo
                                                                                                                      
+
                                                                                                                      classNo
                                                                                                                      
+
                                                                                                                      facultyNo=20
                                                                                                                      
+
                                                                                                                      classNo=103
                                                                                                                      
+
                                                                                                                      
+
                                                                                                                      
+
                                                                                                                    
+
                                                                                                                  
 
                                                                                                                  
 
                                                                                                                  
 
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0350.html b/docs/dli/sqlreference/dli_08_0350.html
index 8a47933b..4ef5bf69 100644
--- a/docs/dli/sqlreference/dli_08_0350.html
+++ b/docs/dli/sqlreference/dli_08_0350.html
@@ -1,7 +1,8 @@
 
 
 
                                                                                                                  Setting the Retention Period for Multiversion Backup Data
                                                                                                                  
-
                                                                                                                  Function
                                                                                                                  After multiversion is enabled, backup data is retained for seven days by default. You can change the retention period by setting system parameter dli.multi.version.retention.days. Multiversion data out of the retention period will be automatically deleted when the insert overwrite or truncate statement is executed. You can also set table attribute dli.multi.version.retention.days to adjust the retention period when adding a column or modifying a partitioned table. For details about the syntax for enabling or disabling the multiversion function, see Enabling or Disabling Multiversion Backup.
                                                                                                                  
+
                                                                                                                  Function
                                                                                                                  After multiversion is enabled, backup data is retained for seven days by default. You can change the retention period by setting system parameter dli.multi.version.retention.days. Multiversion data out of the retention period will be automatically deleted when the insert overwrite or truncate statement is executed. You can also set table attribute dli.multi.version.retention.days to adjust the retention period when adding a column or modifying a partitioned table.
                                                                                                                  
+
                                                                                                                  For details about the syntax for enabling or disabling the multiversion function, see Enabling or Disabling Multiversion Backup.
                                                                                                                  
 
                                                                                                                  Currently, the multiversion function supports only OBS tables created using the Hive syntax. For details about the syntax for creating a table, see Creating an OBS Table Using the Hive Syntax.
                                                                                                                  
 
                                                                                                                  
 
                                                                                                                  Syntax
                                                                                                                  1
@@ -11,10 +12,10 @@
 
 
                                                                                                                  
 
-
                                                                                                                  Keyword
                                                                                                                  • TBLPROPERTIES: This keyword is used to add a key/value property to a table.
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  • TBLPROPERTIES: This keyword is used to add a key/value property to a table.
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Parameter
                                                                                                                  
-
                                                                                                                  Table 1 Parameter description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0351.html b/docs/dli/sqlreference/dli_08_0351.html
index 91ba2088..906362bd 100644
--- a/docs/dli/sqlreference/dli_08_0351.html
+++ b/docs/dli/sqlreference/dli_08_0351.html
@@ -8,10 +8,10 @@
 
                                                                                                                • View the backup data of a specified partition.
                                                                                                                  SHOW HISTORY FOR TABLE [db_name.]table_name PARTITION (column = value, ...);
                                                                                                                  
 
                                                                                                                  • 
-
                                                                                                                  Keyword
                                                                                                                  • SHOW HISTORY FOR TABLE: Used to view backup data
                                                                                                                  • PARTITION: Used to specify the partition column
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  • SHOW HISTORY FOR TABLE: Used to view backup data
                                                                                                                  • PARTITION: Used to specify the partition column
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Parameter
                                                                                                                  
-
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Description
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Parameter description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0352.html b/docs/dli/sqlreference/dli_08_0352.html
index ba3c2183..f23abcd0 100644
--- a/docs/dli/sqlreference/dli_08_0352.html
+++ b/docs/dli/sqlreference/dli_08_0352.html
@@ -8,10 +8,10 @@
 
                                                                                                                • Restore the data of a single partition in a partitioned table to the backup data of a specified version.
                                                                                                                  RESTORE TABLE [db_name.]table_name PARTITION (column = value, ...) TO VERSION 'version_id';
                                                                                                                  
 
                                                                                                                  • 
-
                                                                                                                  Keyword
                                                                                                                  • RESTORE TABLE: Used to restore backup data
                                                                                                                  • PARTITION: Used to specify the partition column
                                                                                                                  • TO VERSION: Used to specify the version number You can run the SHOW HISTORY command to obtain the version number. For details, see Viewing Multiversion Backup Data.
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  • RESTORE TABLE: Used to restore backup data
                                                                                                                  • PARTITION: Used to specify the partition column
                                                                                                                  • TO VERSION: Used to specify the version number You can run the SHOW HISTORY command to obtain the version number. For details, see Viewing Multiversion Backup Data.
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Parameter
                                                                                                                  
-
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Description
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Parameter description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0353.html b/docs/dli/sqlreference/dli_08_0353.html
index af3372ff..f858a3be 100644
--- a/docs/dli/sqlreference/dli_08_0353.html
+++ b/docs/dli/sqlreference/dli_08_0353.html
@@ -11,10 +11,10 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  • TBLPROPERTIES: This keyword is used to add a key/value property to a table.
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  • TBLPROPERTIES: This keyword is used to add a key/value property to a table.
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Parameter
                                                                                                                  
-
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Description
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Parameter description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0354.html b/docs/dli/sqlreference/dli_08_0354.html
index 8010d210..99a5ce3a 100644
--- a/docs/dli/sqlreference/dli_08_0354.html
+++ b/docs/dli/sqlreference/dli_08_0354.html
@@ -16,10 +16,10 @@
 
-
                                                                                                                  Keyword
                                                                                                                  • SET TBLPROPERTIES: Used to set table properties and enable multiversion.
                                                                                                                  • UNSET TBLPROPERTIES: Used to unset table properties and disable multiversion.
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  • SET TBLPROPERTIES: Used to set table properties and enable multiversion.
                                                                                                                  • UNSET TBLPROPERTIES: Used to unset table properties and disable multiversion.
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Parameter
                                                                                                                  
-
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Description
                                                                                                                  
                                                                                                                   		
 
 
                                                                                                                  Table 1 Parameter description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0355.html b/docs/dli/sqlreference/dli_08_0355.html
index 24caa70f..296f86c9 100644
--- a/docs/dli/sqlreference/dli_08_0355.html
+++ b/docs/dli/sqlreference/dli_08_0355.html
@@ -6,10 +6,10 @@
 
                                                                                                                  Syntax
                                                                                                                  Delete multiversion backup data out of the retention period.
                                                                                                                  clear history for table [db_name.]table_name older_than 'timestamp';
                                                                                                                  
 
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Keyword
                                                                                                                  • clear history for table: Used to delete multiversion backup data
                                                                                                                  • older_than: Used to specify the time range for deleting multiversion backup data
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  • clear history for table: Used to delete multiversion backup data
                                                                                                                  • older_than: Used to specify the time range for deleting multiversion backup data
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Parameter
                                                                                                                  
-
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Description
                                                                                                                  
 
                                                                                                                  Table 1 Parameter description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0359.html b/docs/dli/sqlreference/dli_08_0359.html
index c6e88d1b..85277e0c 100644
--- a/docs/dli/sqlreference/dli_08_0359.html
+++ b/docs/dli/sqlreference/dli_08_0359.html
@@ -10,10 +10,10 @@
 
 
-
                                                                                                                  Keyword
                                                                                                                  None
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  None
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Parameter
                                                                                                                  
-
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Description
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Table 1 Parameter description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0370.html b/docs/dli/sqlreference/dli_08_0370.html
index ee72b1ad..1db79dba 100644
--- a/docs/dli/sqlreference/dli_08_0370.html
+++ b/docs/dli/sqlreference/dli_08_0370.html
@@ -1,6 +1,6 @@
 
 
-
                                                                                                                  Flink Opensource SQL 1.12 Syntax Reference
                                                                                                                  
+
                                                                                                                  Flink OpenSource SQL 1.12 Syntax Reference
                                                                                                                  
 
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0371.html b/docs/dli/sqlreference/dli_08_0371.html
index d3f6a1cb..89275c1f 100644
--- a/docs/dli/sqlreference/dli_08_0371.html
+++ b/docs/dli/sqlreference/dli_08_0371.html
@@ -11,7 +11,7 @@
 
 
 
                                                                                                                  
-
                                                                                                                  Parent topic: Flink Opensource SQL 1.12 Syntax Reference
                                                                                                                  
+
                                                                                                                  Parent topic: Flink OpenSource SQL 1.12 Syntax Reference
                                                                                                                  
 
                                                                                                                  
 
                                                                                                                  
 
diff --git a/docs/dli/sqlreference/dli_08_0378.html b/docs/dli/sqlreference/dli_08_0378.html
index 23d2b454..b59748ac 100644
--- a/docs/dli/sqlreference/dli_08_0378.html
+++ b/docs/dli/sqlreference/dli_08_0378.html
@@ -126,8 +126,8 @@ patternQuantifier:
   |   '{' repeat '}'
                                                                                                                  Precautions
                                                                                                                  Flink SQL uses a lexical policy for identifier (table, attribute, function names) similar to Java:
                                                                                                                  
-
                                                                                                                  • The case of identifiers is preserved whether or not they are quoted.
                                                                                                                  • Identifiers are matched case-sensitively.
                                                                                                                  • Unlike Java, back-ticks allow identifiers to contain non-alphanumeric characters (for example, SELECT a AS `my field` FROM t).
                                                                                                                  
-
                                                                                                                  String literals must be enclosed in single quotes (for example, SELECT'Hello World'). Duplicate a single quote for escaping (for example, SELECT'It''s me.'). Unicode characters are supported in string literals. If explicit Unicode points are required, use the following syntax:
                                                                                                                  
+
                                                                                                                  • The case of identifiers is preserved whether they are quoted.
                                                                                                                  • Identifiers are matched case-sensitively.
                                                                                                                  • Unlike Java, back-ticks allow identifiers to contain non-alphanumeric characters (for example, SELECT a AS `my field` FROM t).
                                                                                                                  
+
                                                                                                                  String literals must be enclosed in single quotes (for example, SELECT'Hello World'). Duplicate a single quote for escaping (for example, SELECT 'It''s me.'). Unicode characters are supported in string literals. If explicit Unicode points are required, use the following syntax:
                                                                                                                  • Use the backslash (\) as an escaping character (default): SELECT U&'\263A'
                                                                                                                  • Use a custom escaping character: SELECT U&'#263A' UESCAPE '#'
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0379.html b/docs/dli/sqlreference/dli_08_0379.html
index 1b11eed9..4cf84dd0 100644
--- a/docs/dli/sqlreference/dli_08_0379.html
+++ b/docs/dli/sqlreference/dli_08_0379.html
@@ -118,7 +118,7 @@
 
                                                                                                                  
 
diff --git a/docs/dli/sqlreference/dli_08_0380.html b/docs/dli/sqlreference/dli_08_0380.html
index 216823b9..29959471 100644
--- a/docs/dli/sqlreference/dli_08_0380.html
+++ b/docs/dli/sqlreference/dli_08_0380.html
@@ -15,7 +15,7 @@
 
                                                                                                                  
-
                                                                                                                  Parent topic: Flink Opensource SQL 1.12 Syntax Reference
                                                                                                                  
+
                                                                                                                  Parent topic: Flink OpenSource SQL 1.12 Syntax Reference
                                                                                                                  
 
                                                                                                                  
 
diff --git a/docs/dli/sqlreference/dli_08_0384.html b/docs/dli/sqlreference/dli_08_0384.html
index b5f6ead9..39a55bf3 100644
--- a/docs/dli/sqlreference/dli_08_0384.html
+++ b/docs/dli/sqlreference/dli_08_0384.html
@@ -8,7 +8,7 @@
 
                                                                                                                  For details, see section "Modifying the Host Information" in the Data Lake Insight User Guide.
                                                                                                                  
-
                                                                                                                  Precautions
                                                                                                                  • When creating a Flink OpenSource SQL job, you need to set Flink Version to 1.12 on the Running Parameters tab of the job editing page, select Save Job Log, and set the OBS bucket for saving job logs.
                                                                                                                  • Do not enable Kerberos authentication for the created HBase cluster.
                                                                                                                  • The column families in created HBase source table must be declared as the ROW type, the field names map the column family names, and the nested field names map the column qualifier names.
                                                                                                                    There is no need to declare all the families and qualifiers in the schema. Users can declare what is used in the query. Except the ROW type fields, the single atomic type field (for example, STRING or BIGINT) will be recognized as the HBase rowkey. The rowkey field can be an arbitrary name, but should be quoted using backticks if it is a reserved keyword.
                                                                                                                    
+
                                                                                                                    Precautions
                                                                                                                    • When creating a Flink OpenSource SQL job, you need to set Flink Version to 1.12 on the Running Parameters tab of the job editing page, select Save Job Log, and set the OBS bucket for saving job logs.
                                                                                                                    • The column families in created HBase source table must be declared as the ROW type, the field names map the column family names, and the nested field names map the column qualifier names.
                                                                                                                      There is no need to declare all the families and qualifiers in the schema. Users can declare what is used in the query. Except the ROW type fields, the single atomic type field (for example, STRING or BIGINT) will be recognized as the HBase rowkey. The rowkey field can be an arbitrary name, but should be quoted using backticks if it is a reserved keyword.
                                                                                                                      
 
                                                                                                                    
 
                                                                                                                    
 
                                                                                                                    Syntax
                                                                                                                    create table hbaseSource (
diff --git a/docs/dli/sqlreference/dli_08_0386.html b/docs/dli/sqlreference/dli_08_0386.html
index 987720dd..0f82c3a8 100644
--- a/docs/dli/sqlreference/dli_08_0386.html
+++ b/docs/dli/sqlreference/dli_08_0386.html
@@ -7,7 +7,7 @@
 
                                                                                                                    Prerequisites
                                                                                                                    • You have created a Kafka cluster.
                                                                                                                    • An enhanced datasource connection has been created for DLI to connect to Kafka clusters, so that jobs can run on the dedicated queue of DLI and you can set the security group rules as required.
 
                                                                                                                    
 
                                                                                                                    
-
                                                                                                                    Precautions
                                                                                                                    • When creating a Flink OpenSource SQL job, you need to set Flink Version to 1.12 on the Running Parameters tab of the job editing page, select Save Job Log, and set the OBS bucket for saving job logs.
                                                                                                                    • For details about how to use data types when creating tables, see Format.
                                                                                                                    • SASL_SSL cannot be enabled for the interconnected Kafka cluster.
                                                                                                                    
+
                                                                                                                    Precautions
                                                                                                                    • When creating a Flink OpenSource SQL job, you need to set Flink Version to 1.12 on the Running Parameters tab of the job editing page, select Save Job Log, and set the OBS bucket for saving job logs.
                                                                                                                    • For details about how to use data types when creating tables, see Format.
                                                                                                                    
 
                                                                                                                    
 
                                                                                                                    Syntax
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Description
                                                                                                                  
                                                                                                                   		
 
 
 
 
 
 
 
 
 
 
 
 
 
                                                                                                                  
-
diff --git a/docs/dli/sqlreference/dli_08_0389.html b/docs/dli/sqlreference/dli_08_0389.html
index 1edf4d40..2749cf80 100644
--- a/docs/dli/sqlreference/dli_08_0389.html
+++ b/docs/dli/sqlreference/dli_08_0389.html
@@ -3,8 +3,8 @@
 
                                                                                                                  Redis Source Table
                                                                                                                  Function
                                                                                                                  Create a source stream to obtain data from Redis as input for jobs.
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Prerequisites
                                                                                                                  An enhanced datasource connection has been created for DLI to connect to the Redis database, so that you can configure security group rules as required.
                                                                                                                  
-
+
                                                                                                                  Prerequisites
                                                                                                                  • An enhanced datasource connection has been created for DLI to connect to the Redis database, so that you can configure security group rules as required.
+
                                                                                                                  
 
                                                                                                                  
 
                                                                                                                  Precautions
                                                                                                                  • When creating a Flink OpenSource SQL job, you need to set Flink Version to 1.12 on the Running Parameters tab of the job editing page, select Save Job Log, and set the OBS bucket for saving job logs.
                                                                                                                  • To obtain the key values, you can set the primary key in Flink. The primary key maps to the Redis key.
                                                                                                                  • The primary key cannot be a composite primary key, and only can be one field.
                                                                                                                  • Constraints on schema-syntax:
                                                                                                                    • If schema-syntax is map or array, there can be only one non-primary key and it must be of the same map or array type.
                                                                                                                    • If schema-syntax is fields-scores, the number of non-primary keys must be an even number, and the second key of every two keys except the primary key must be of the double type. The double value is the score of the previous key. The following is an example:
                                                                                                                      CREATE TABLE redisSource (
   redisKey string,
diff --git a/docs/dli/sqlreference/dli_08_0390.html b/docs/dli/sqlreference/dli_08_0390.html
index 7886b6b4..7df252f1 100644
--- a/docs/dli/sqlreference/dli_08_0390.html
+++ b/docs/dli/sqlreference/dli_08_0390.html
@@ -4,8 +4,8 @@
 
                                                                                                                      Function
                                                                                                                      Apache Kafka is a fast, scalable, and fault-tolerant distributed message publishing and subscription system. It delivers high throughput and built-in partitions and provides data replicas and fault tolerance. Apache Kafka is applicable to scenarios of handling massive messages.
                                                                                                                      
 
                                                                                                                      As a source, the upsert-kafka connector produces a changelog stream, where each data record represents an update or delete event. More precisely, the value in a data record is interpreted as an UPDATE of the last value for the same key, if any (if a corresponding key does not exist yet, the UPDATE will be considered an INSERT). Using the table analogy, a data record in a changelog stream is interpreted as an UPSERT, also known as INSERT/UPDATE, because any existing row with the same key is overwritten. Also, null values are interpreted in a special way: A record with a null value represents a DELETE.
                                                                                                                      
 
                                                                                                                      
-
                                                                                                                      Prerequisites
                                                                                                                      An enhanced datasource connection has been created for DLI to connect to Kafka clusters, so that jobs can run on the dedicated queue of DLI and you can set the security group rules as required.
-
                                                                                                                      
+
                                                                                                                      Prerequisites
                                                                                                                      • An enhanced datasource connection has been created for DLI to connect to Kafka clusters, so that jobs can run on the dedicated queue of DLI and you can set the security group rules as required.
+
                                                                                                                      
 
                                                                                                                      
 
                                                                                                                      Precautions
                                                                                                                      • When creating a Flink OpenSource SQL job, you need to set Flink Version to 1.12 on the Running Parameters tab of the job editing page, select Save Job Log, and set the OBS bucket for saving job logs.
                                                                                                                      • The Upsert Kafka always works in the upsert fashion and requires to define the primary key in the DDL. With the assumption that records with the same key should be ordered in the same partition, the primary key semantic on the changelog source means the materialized changelog is unique on the primary keys. The primary key definition will also control which fields should end up in Kafka's key.
                                                                                                                      • Because the connector is working in upsert mode, the last record on the same key will take effect when reading back as a source.
                                                                                                                      • For details about how to use data types, see section Format.
                                                                                                                      
 
                                                                                                                      
diff --git a/docs/dli/sqlreference/dli_08_0391.html b/docs/dli/sqlreference/dli_08_0391.html
index 6a57a488..f88bc130 100644
--- a/docs/dli/sqlreference/dli_08_0391.html
+++ b/docs/dli/sqlreference/dli_08_0391.html
@@ -24,6 +24,8 @@
 
                                                                                                                      • 
 
                                                                                                                    • Upsert Kafka Result Table
                                                                                                                      
 
                                                                                                                      • 
+
                                                                                                                    • FileSystem Result Table
                                                                                                                      
+
                                                                                                                      • 
 
                                                                                                                    
 
 
                                                                                                                    
diff --git a/docs/dli/sqlreference/dli_08_0392.html b/docs/dli/sqlreference/dli_08_0392.html
index 8f307c6b..773f3263 100644
--- a/docs/dli/sqlreference/dli_08_0392.html
+++ b/docs/dli/sqlreference/dli_08_0392.html
@@ -11,8 +11,8 @@
 
                                                                                                                    Syntax
                                                                                                                    create table blackhole_table (
  attr_name attr_type (',' attr_name attr_type) *
 ) with (
- 'connector = blackhole'
-)
                                                                                                                    
+ 'connector' = 'blackhole'
+);
 
                                                                                                                    
 
                                                                                                                    Parameters
                                                                                                                    
 
                                                                                                                   1
  2
diff --git a/docs/dli/sqlreference/dli_08_0388.html b/docs/dli/sqlreference/dli_08_0388.html
index 2908c89b..1f159311 100644
--- a/docs/dli/sqlreference/dli_08_0388.html
+++ b/docs/dli/sqlreference/dli_08_0388.html
@@ -149,7 +149,7 @@ with (
 
                                                                                                                  		
 
                                                                                                                  String
                                                                                                                  
 
                                                                                                                  Fine-grained control over the behavior of Debezium clients, for example, 'debezium.snapshot.mode' = 'never'. For details, see Connector configuration properties.
                                                                                                                  
+
                                                                                                                  Fine-grained control over the behavior of Debezium clients, for example, 'debezium.snapshot.mode' = 'never'.
                                                                                                                  
 
                                                                                                                  You are advised to set the debezium.slot.name parameter for each table to avoid the following error: "PSQLException: ERROR: replication slot "debezium" is active for PID 974"
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  
 
                                                                                                                  Table 1 
                                                                                                                  Parameter
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0394.html b/docs/dli/sqlreference/dli_08_0394.html
index 436a4144..8bd71d51 100644
--- a/docs/dli/sqlreference/dli_08_0394.html
+++ b/docs/dli/sqlreference/dli_08_0394.html
@@ -38,7 +38,9 @@
 
 
 
-
                                                                                                                  Syntax
                                                                                                                  
-
-
-
-
diff --git a/docs/dli/sqlreference/dli_08_0404.html b/docs/dli/sqlreference/dli_08_0404.html
index 6e676394..8609665c 100644
--- a/docs/dli/sqlreference/dli_08_0404.html
+++ b/docs/dli/sqlreference/dli_08_0404.html
@@ -8,7 +8,7 @@
 
                                                                                                                  For details, see section "Modifying the Host Information" in the Data Lake Insight User Guide.
                                                                                                                  
-
                                                                                                                  Precautions
                                                                                                                  • When you create a Flink OpenSource SQL job, set Flink Version to 1.12 in the Running Parameters tab. Select Save Job Log, and specify the OBS bucket for saving job logs.
                                                                                                                  • Do not enable Kerberos authentication for the HBase cluster.
                                                                                                                  • All the column families in HBase table must be declared as ROW type, the field name maps to the column family name, and the nested field names map to the column qualifier names. There is no need to declare all the families and qualifiers in the schema, users can declare what is used in the query. Except the ROW type fields, the single atomic type field (for example, STRING, BIGINT) will be recognized as HBase rowkey. The rowkey field can be an arbitrary name, but should be quoted using backticks if it is a reserved keyword.
                                                                                                                  
+
                                                                                                                  Precautions
                                                                                                                  • When you create a Flink OpenSource SQL job, set Flink Version to 1.12 in the Running Parameters tab. Select Save Job Log, and specify the OBS bucket for saving job logs.
                                                                                                                  • All the column families in HBase table must be declared as ROW type, the field name maps to the column family name, and the nested field names map to the column qualifier names. There is no need to declare all the families and qualifiers in the schema, users can declare what is used in the query. Except the ROW type fields, the single atomic type field (for example, STRING, BIGINT) will be recognized as HBase rowkey. The rowkey field can be an arbitrary name, but should be quoted using backticks if it is a reserved keyword.
                                                                                                                  
 
                                                                                                                  
 
                                                                                                                  Syntax
                                                                                                                  create table hbaseSource (
   attr_name attr_type 
diff --git a/docs/dli/sqlreference/dli_08_0405.html b/docs/dli/sqlreference/dli_08_0405.html
index 0aab9b20..a90e818c 100644
--- a/docs/dli/sqlreference/dli_08_0405.html
+++ b/docs/dli/sqlreference/dli_08_0405.html
@@ -4,7 +4,7 @@
 
                                                                                                                  Create a JDBC dimension table to connect to the source stream.
                                                                                                                  
 
                                                                                                                  Prerequisites
                                                                                                                  You have created a JDBC instance for your account.
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Precautions
                                                                                                                  When you create a Flink OpenSource SQL job, set Flink Version to 1.12 in the Running Parameters tab. Select Save Job Log, and specify the OBS bucket for saving job logs.
                                                                                                                  
+
                                                                                                                  Precautions
                                                                                                                  • When you create a Flink OpenSource SQL job, set Flink Version to 1.12 in the Running Parameters tab. Select Save Job Log, and specify the OBS bucket for saving job logs.
                                                                                                                  
 
                                                                                                                  
 
                                                                                                                  Syntax
                                                                                                                   1
+
                                                                                                                  Syntax
                                                                                                                   
                                                                                                                  Do not set all attributes in a GaussDB(DWS) result table to PRIMARY KEY.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
-
-
+
+
+
+
+
+
                                                                                                                   1
  2
  3
  4
@@ -170,8 +172,9 @@
 
                                                                                                                  		
 
                                                                                                                  Integer
                                                                                                                  
 
                                                                                                                  Maximum rows allowed for data flush. If the data size exceeds the value, data flush is triggered. The default value is 100.
                                                                                                                  
-
                                                                                                                  If this parameter is set to 0, this configuration is disabled, and data is flushed in real time.
                                                                                                                  
+
                                                                                                                  Maximum number of rows to buffer for each write request.
                                                                                                                  
+
                                                                                                                  It can improve the performance of writing data, but may increase the latency.
                                                                                                                  
+
                                                                                                                  You can set this parameter to 0 to disable it.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  
 
                                                                                                                  sink.buffer-flush.interval
                                                                                                                  
@@ -182,7 +185,11 @@
                                                                                                                   		
 
                                                                                                                  Duration
                                                                                                                  
 
                                                                                                                  Data flush period. Data flush is triggered periodically. The format is {length value}{time unit label}, for example, 123ms, 321s. The supported time units include d, h, min, s, and ms (default unit).
                                                                                                                  
+
                                                                                                                  Interval for refreshing the buffer, during which data is refreshed by asynchronous threads.
                                                                                                                  
+
                                                                                                                  It can improve the performance of writing data to the database, but may increase the latency.
                                                                                                                  
+
                                                                                                                  You can set this parameter to 0 to disable it.
                                                                                                                  
+
                                                                                                                  Note: If sink.buffer-flush.max-size and sink.buffer-flush.max-rows are both set to 0 and the buffer refresh interval is configured, the buffer is asynchronously refreshed.
                                                                                                                  
+
                                                                                                                  The format is {length value}{time unit label}, for example, 123ms, 321s. The supported time units include d, h, min, s, and ms (default unit).
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  
 
                                                                                                                  sink.max-retries
                                                                                                                  
@@ -207,6 +214,18 @@
 
                                                                                                                  Whether to escape values of the string type. This parameter is used only when write.mode is set to copy.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  key-by-before-sink
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  false
                                                                                                                  
+
                                                                                                                  Boolean
                                                                                                                  
+
                                                                                                                  Whether to partition by the specified primary key before the sink operator
                                                                                                                  
+
                                                                                                                  This parameter aims to solve the problem of interlocking between two subtasks when they acquire row locks based on the primary key from GaussDB(DWS), multiple concurrent writes occur, and write.mode is upsert. This happens when a batch of data written to the sink by multiple subtasks has more than one record with the same primary key, and the order of these records with the same primary key is inconsistent.
                                                                                                                  
+
                                                                                                                  
                                                                                                                   
 
                                                                                                                  
 
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0395.html b/docs/dli/sqlreference/dli_08_0395.html
index d268aeec..11f83ab1 100644
--- a/docs/dli/sqlreference/dli_08_0395.html
+++ b/docs/dli/sqlreference/dli_08_0395.html
@@ -4,11 +4,10 @@
 
                                                                                                                  Function
                                                                                                                  DLI outputs Flink job output data to Elasticsearch of Cloud Search Service (CSS). Elasticsearch is a popular enterprise-class Lucene-powered search server and provides the distributed multi-user capabilities. It delivers multiple functions, including full-text retrieval, structured search, analytics, aggregation, and highlighting. With Elasticsearch, you can achieve stable, reliable, real-time search. Elasticsearch applies to diversified scenarios, such as log analysis and site search.
                                                                                                                  
 
                                                                                                                  CSS is a fully managed, distributed search service. It is fully compatible with open-source Elasticsearch and provides DLI with structured and unstructured data search, statistics, and report capabilities.
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Prerequisites
                                                                                                                  • When creating a Flink OpenSource SQL job, you need to set Flink Version to 1.12 on the Running Parameters tab of the job editing page, select Save Job Log, and set the OBS bucket for saving job logs.
                                                                                                                  • You have created a cluster on CSS. 
                                                                                                                    If you need to access Elasticsearch using the cluster username and password, enable the security mode and disable HTTPS for the created CSS cluster.
                                                                                                                    
-
                                                                                                                  • An enhanced datasource connection has been created for DLI to connect to CSS, so that jobs can run on the dedicated queue of DLI and you can set the security group rules as required.
+
                                                                                                                    Prerequisites
                                                                                                                    • When creating a Flink OpenSource SQL job, you need to set Flink Version to 1.12 on the Running Parameters tab of the job editing page, select Save Job Log, and set the OBS bucket for saving job logs.
                                                                                                                    • You have created a cluster on CSS. 
                                                                                                                    • An enhanced datasource connection has been created for DLI to connect to CSS, so that jobs can run on the dedicated queue of DLI and you can set the security group rules as required.
 
                                                                                                                    
 
                                                                                                                    
-
                                                                                                                    Precautions
                                                                                                                    • Currently, only CSS 7.X and later versions are supported. Version 7.6.2 is recommended.
                                                                                                                    • If the username and password are not used, the security mode must be enabled and HTTPS must be disabled for the created CSS cluster.
                                                                                                                    • ICMP must be enabled for the security group inbound rules of the CSS cluster.
                                                                                                                    • For details about how to use data types, see section Format.
                                                                                                                    • Before submitting a Flink job, you are advised to select Save Job Log and set the OBS bucket for saving job logs. This helps you view logs and locate faults when the job fails to be submitted or runs abnormally.
                                                                                                                    • The Elasticsearch sink can work in either upsert mode or append mode, depending on whether a primary key is defined.
                                                                                                                      • If a primary key is defined, the Elasticsearch sink works in upsert mode, which can consume queries containing UPDATE and DELETE messages.
                                                                                                                      • If a primary key is not defined, the Elasticsearch sink works in append mode which can only consume queries containing INSERT messages.
                                                                                                                      
+
                                                                                                                      Precautions
                                                                                                                      • Currently, only CSS 7.X and later versions are supported. Version 7.6.2 is recommended.
                                                                                                                      • ICMP must be enabled for the security group inbound rules of the CSS cluster.
                                                                                                                      • For details about how to use data types, see section Format.
                                                                                                                      • Before submitting a Flink job, you are advised to select Save Job Log and set the OBS bucket for saving job logs. This helps you view logs and locate faults when the job fails to be submitted or runs abnormally.
                                                                                                                      • The Elasticsearch sink can work in either upsert mode or append mode, depending on whether a primary key is defined.
                                                                                                                        • If a primary key is defined, the Elasticsearch sink works in upsert mode, which can consume queries containing UPDATE and DELETE messages.
                                                                                                                        • If a primary key is not defined, the Elasticsearch sink works in append mode which can only consume queries containing INSERT messages.
                                                                                                                        
 
                                                                                                                        In the Elasticsearch result table, the primary key is used to calculate the Elasticsearch document ID. The document ID is a string of up to 512 bytes. It cannot have spaces. The Elasticsearch result table generates a document ID string for every row by concatenating all primary key fields in the order defined in the DDL using a key delimiter specified by document-id.key-delimiter. Certain types are not allowed as a primary key field as they do not have a good string representation, for example, BYTES, ROW, ARRAY, and MAP. If no primary key is specified, Elasticsearch will generate a document ID automatically.
                                                                                                                        
 
                                                                                                                      • The Elasticsearch result table supports both static index and dynamic index.
                                                                                                                        • If you want to have a static index, the index option value should be a plain string, such as myusers, all the records will be consistently written into the myusers index.
                                                                                                                        • If you want to have a dynamic index, you can use {field_name} to reference a field value in the record to dynamically generate a target index. You can also use {field_name|date_format_string} to convert a field value of the TIMESTAMP, DATE, or TIME type into the format specified by date_format_string. date_format_string is compatible with Java's DateTimeFormatter. For example, if the option value is myusers-{log_ts|yyyy-MM-dd}, then a record with log_ts field value 2020-03-27 12:25:55 will be written into the myusers-2020-03-27 index.
                                                                                                                        
 
                                                                                                                      
@@ -56,7 +55,7 @@ with (
 
                                                                                                                  		
 
                                                                                                                  String
                                                                                                                  
 
                                                                                                                  Host name of the cluster where Elasticsearch locates. Use semicolons (;) to separate multiple host names. Ensure that the host name starts with http, for example, http://x.x.x.x:9200.
                                                                                                                  
+
                                                                                                                  Host name of the cluster where Elasticsearch is located. Use semicolons (;) to separate multiple host names.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  
 
                                                                                                                  index
                                                                                                                  
@@ -79,7 +78,6 @@ with (
 
                                                                                                                  String
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Username of the cluster where Elasticsearch locates. This parameter must be configured in pair with password.
                                                                                                                  
-
                                                                                                                  If the username and password are used, the security mode must be enabled and HTTPS must be disabled for the created CSS cluster.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  
 
                                                                                                                  password
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0396.html b/docs/dli/sqlreference/dli_08_0396.html
index c80b31b7..982e18ac 100644
--- a/docs/dli/sqlreference/dli_08_0396.html
+++ b/docs/dli/sqlreference/dli_08_0396.html
@@ -7,7 +7,7 @@
 
                                                                                                                • If MRS HBase is used, IP addresses of all hosts in the MRS cluster have been added to host information of the enhanced datasource connection.
                                                                                                                  .
                                                                                                                  
 
                                                                                                                  • 
 
-
                                                                                                                  Precautions
                                                                                                                  • When creating a Flink OpenSource SQL job, you need to set Flink Version to 1.12 on the Running Parameters tab of the job editing page, select Save Job Log, and set the OBS bucket for saving job logs.
                                                                                                                  • Do not enable Kerberos authentication for the HBase cluster.
                                                                                                                  • The column families in created HBase result table must be declared as the ROW type, the field names map the column family names, and the nested field names map the column qualifier names. There is no need to declare all the families and qualifiers in the schema. Users can declare what is used in the query. Except the ROW type fields, the single atomic type field (for example, STRING or BIGINT) will be recognized as the HBase rowkey. The rowkey field can be an arbitrary name, but should be quoted using backticks if it is a reserved keyword.
                                                                                                                  
+
                                                                                                                  Precautions
                                                                                                                  • When creating a Flink OpenSource SQL job, you need to set Flink Version to 1.12 on the Running Parameters tab of the job editing page, select Save Job Log, and set the OBS bucket for saving job logs.
                                                                                                                  • The column families in created HBase result table must be declared as the ROW type, the field names map the column family names, and the nested field names map the column qualifier names. There is no need to declare all the families and qualifiers in the schema. Users can declare what is used in the query. Except the ROW type fields, the single atomic type field (for example, STRING or BIGINT) will be recognized as the HBase rowkey. The rowkey field can be an arbitrary name, but should be quoted using backticks if it is a reserved keyword.
                                                                                                                  
 
                                                                                                                  
 
                                                                                                                  Syntax
                                                                                                                  create table hbaseSink (
   attr_name attr_type 
@@ -124,10 +124,11 @@
 
                                                                                                                  		
 
                                                                                                                  Duration
                                                                                                                  
 
                                                                                                                  Interval for flushing any buffered rows.
                                                                                                                  
+
                                                                                                                  Interval for refreshing the buffer, during which data is refreshed by asynchronous threads.
                                                                                                                  
 
                                                                                                                  This can improve performance for writing data to the HBase database, but may increase the latency.
                                                                                                                  
 
                                                                                                                  You can set this parameter to 0 to disable it.
                                                                                                                  
-
                                                                                                                  Note: Both sink.buffer-flush.max-size and sink.buffer-flush.max-rows can be set to 0 with the flush interval set allowing for complete asynchronous processing of buffered actions.
                                                                                                                  
+
                                                                                                                  Note: If sink.buffer-flush.max-size and sink.buffer-flush.max-rows are both set to 0 and the buffer refresh interval is configured, the buffer is asynchronously refreshed.
                                                                                                                  
+
                                                                                                                  The format is {length value}{time unit label}, for example, 123ms, 321s. The supported time units include d, h, min, s, and ms (default unit).
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  
 
                                                                                                                  sink.parallelism
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0397.html b/docs/dli/sqlreference/dli_08_0397.html
index 593ef459..7ca3bec7 100644
--- a/docs/dli/sqlreference/dli_08_0397.html
+++ b/docs/dli/sqlreference/dli_08_0397.html
@@ -3,8 +3,8 @@
 
                                                                                                                  JDBC Result Table
                                                                                                                  
 
                                                                                                                  Function
                                                                                                                  DLI outputs the Flink job output data to RDS through the JDBC result table.
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Prerequisites
                                                                                                                  An enhanced datasource connection with the instances has been established, so that you can configure security group rules as required.
                                                                                                                  
-
+
                                                                                                                  Prerequisites
                                                                                                                  • An enhanced datasource connection with the instances has been established, so that you can configure security group rules as required.
+
                                                                                                                  
 
                                                                                                                  
 
                                                                                                                  Precautions
                                                                                                                  • When creating a Flink OpenSource SQL job, you need to set Flink Version to 1.12 on the Running Parameters tab of the job editing page, select Save Job Log, and set the OBS bucket for saving job logs.
                                                                                                                  • The connector operates in upsert mode if the primary key was defined; otherwise, the connector operates in append mode.
                                                                                                                    • In upsert mode, Flink will insert a new row or update the existing row according to the primary key. Flink can ensure the idempotence in this way. To guarantee the output result is as expected, it is recommended to define a primary key for the table.
                                                                                                                    • In append mode, Flink will interpret all records as INSERT messages. The INSERT operation may fail if a primary key or unique constraint violation happens in the underlying database.
                                                                                                                    
 
                                                                                                                  
@@ -125,7 +125,9 @@
 
                                                                                                                  		
 
                                                                                                                  Integer
                                                                                                                  
 
                                                                                                                  Maximum size of buffered records before flush. You can set this parameter to 0 to disable it.
                                                                                                                  
+
                                                                                                                  Maximum number of rows to buffer for each write request.
                                                                                                                  
+
                                                                                                                  It can improve the performance of writing data, but may increase the latency.
                                                                                                                  
+
                                                                                                                  You can set this parameter to 0 to disable it.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  
 
                                                                                                                  sink.buffer-flush.interval
                                                                                                                  
@@ -136,8 +138,11 @@
                                                                                                                   		
 
                                                                                                                  Duration
                                                                                                                  
 
                                                                                                                  Flush interval, during which asynchronous threads will flush data. You can set this parameter to 0 to disable it.
                                                                                                                  
-
                                                                                                                  Note that sink.buffer-flush.max-rows can be set to 0 with the flush interval set allowing for complete asynchronous processing of buffered actions.
                                                                                                                  
+
                                                                                                                  Interval for refreshing the buffer, during which data is refreshed by asynchronous threads.
                                                                                                                  
+
                                                                                                                  It can improve the performance of writing data, but may increase the latency.
                                                                                                                  
+
                                                                                                                  You can set this parameter to 0 to disable it.
                                                                                                                  
+
                                                                                                                  Note: If sink.buffer-flush.max-rows is set to 0 and the buffer refresh interval is configured, the buffer is asynchronously refreshed.
                                                                                                                  
+
                                                                                                                  The format is {length value}{time unit label}, for example, 123ms, 321s. The supported time units include d, h, min, s, and ms (default unit).
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  
 
                                                                                                                  sink.max-retries
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0400.html b/docs/dli/sqlreference/dli_08_0400.html
index 2bd55ec4..d56c9aa2 100644
--- a/docs/dli/sqlreference/dli_08_0400.html
+++ b/docs/dli/sqlreference/dli_08_0400.html
@@ -55,7 +55,7 @@
 9
                                                                                                                  create table dwsSink (
   attr_name attr_type 
   (',' attr_name attr_type)* 
-  (','PRIMARY KEY (attr_name, ...) NOT ENFORCED)
+  (','PRIMARY KEY (attr_name) NOT ENFORCED)
 )
 with (
   'connector' = 'redis',
@@ -281,7 +281,7 @@
 
                                                                                                                  String
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  Supplementary parameter of key-ttl-mode. Available values are as follows:
                                                                                                                  
-
                                                                                                                  • If key-ttl-mode is no-ttl, this parameter does not need to be configured.
                                                                                                                  • If key-ttl-mode is expire-msec, set this parameter to a string that can be parsed into the Long type. For example, 5000 indicates that the key will expire in 5000 ms.
                                                                                                                  • If key-ttl-mode is expire-at-date, set this parameter to a date. For example, 2011-12-03T10:15:30 indicates that the expiration time is 2011-12-03 18:15:30 (UTC+8).
                                                                                                                  • If key-ttl-mode is expire-at-timestamp, set this parameter to a timestamp, in milliseconds. For example, 1679385600000 indicates that the expiration time is 2023-03-21 16:00:00.
                                                                                                                  
+
                                                                                                                  • If key-ttl-mode is no-ttl, this parameter does not need to be configured.
                                                                                                                  • If key-ttl-mode is expire-msec, set this parameter to a string that can be parsed into the Long type. For example, 5000 indicates that the key will expire in 5000 ms.
                                                                                                                  • If key-ttl-mode is expire-at-date, set this parameter to a date.
                                                                                                                  • If key-ttl-mode is expire-at-timestamp, set this parameter to a timestamp, in milliseconds. For example, 1679385600000 indicates that the expiration time is 2023-03-21 16:00:00.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  
                                                                                                                   
 
 
                                                                                                                   1
  2
@@ -34,114 +34,114 @@
 
                                                                                                                  
 
 
                                                                                                                  Parameters
                                                                                                                  
-
                                                                                                                  Table 1 Parameter descriptions
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
diff --git a/docs/dli/sqlreference/dli_08_0406.html b/docs/dli/sqlreference/dli_08_0406.html
index 2c9597af..90fc444f 100644
--- a/docs/dli/sqlreference/dli_08_0406.html
+++ b/docs/dli/sqlreference/dli_08_0406.html
@@ -373,8 +373,6 @@ insert into order_detail
 
-
                                                                                                                  FAQs
                                                                                                                  If Chinese characters are written to the Redis in the Windows environment, an exception will occur during data writing.
                                                                                                                  
-
                                                                                                                  
 
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0413.html b/docs/dli/sqlreference/dli_08_0413.html
index fce41d8f..c65b9143 100644
--- a/docs/dli/sqlreference/dli_08_0413.html
+++ b/docs/dli/sqlreference/dli_08_0413.html
@@ -37,7 +37,7 @@
 
 
                                                                                                                  
-
                                                                                                                  Table 1 Parameter descriptions
                                                                                                                  Parameter
                                                                                                                  
 
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
 
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  
 
                                                                                                                  connector
                                                                                                                  
+
                                                                                                                  connector
                                                                                                                  
 
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
 
                                                                                                                  Data source type. The value is fixed to jdbc.
                                                                                                                  
+
                                                                                                                  Data source type. The value is fixed to jdbc.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  url
                                                                                                                  
+
                                                                                                                  url
                                                                                                                  
 
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
 
                                                                                                                  Database URL
                                                                                                                  
+
                                                                                                                  Database URL
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  table-name
                                                                                                                  
+
                                                                                                                  table-name
                                                                                                                  
 
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
 
                                                                                                                  Name of the table where the data will be read from the database
                                                                                                                  
+
                                                                                                                  Name of the table where the data will be read from the database
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  driver
                                                                                                                  
+
                                                                                                                  driver
                                                                                                                  
 
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
 
                                                                                                                  Driver required for connecting to the database. If you do not set this parameter, the automatically extracted URL will be used.
                                                                                                                  
+
                                                                                                                  Driver required for connecting to the database. If you do not set this parameter, the automatically extracted URL will be used.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  username
                                                                                                                  
+
                                                                                                                  username
                                                                                                                  
 
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
 
                                                                                                                  Database authentication user name. This parameter must be configured in pair with password.
                                                                                                                  
+
                                                                                                                  Database authentication user name. This parameter must be configured in pair with password.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  password
                                                                                                                  
+
                                                                                                                  password
                                                                                                                  
 
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
 
                                                                                                                  Database authentication password. This parameter must be configured in pair with username.
                                                                                                                  
+
                                                                                                                  Database authentication password. This parameter must be configured in pair with username.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  scan.partition.column
                                                                                                                  
+
                                                                                                                  scan.partition.column
                                                                                                                  
 
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
 
                                                                                                                  Name of the column used to partition the input
                                                                                                                  
+
                                                                                                                  Name of the column used to partition the input
                                                                                                                  
 
                                                                                                                  This parameter must be set when scan.partition.lower-bound, scan.partition.upper-bound, and scan.partition.num are all configured, and should not be set when other three parameters are not.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  scan.partition.lower-bound
                                                                                                                  
+
                                                                                                                  scan.partition.lower-bound
                                                                                                                  
 
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
 
                                                                                                                  Lower bound of values to be fetched for the first partition
                                                                                                                  
+
                                                                                                                  Lower bound of values to be fetched for the first partition
                                                                                                                  
 
                                                                                                                  This parameter must be set when scan.partition.column, scan.partition.upper-bound, and scan.partition.num are all configured, and should not be set when other three parameters are not.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  scan.partition.upper-bound
                                                                                                                  
+
                                                                                                                  scan.partition.upper-bound
                                                                                                                  
 
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
 
                                                                                                                  Upper bound of values to be fetched for the last partition
                                                                                                                  
+
                                                                                                                  Upper bound of values to be fetched for the last partition
                                                                                                                  
 
                                                                                                                  This parameter must be set when scan.partition.column, scan.partition.lower-bound, and scan.partition.num are all configured, and should not be set when other three parameters are not.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  scan.partition.num
                                                                                                                  
+
                                                                                                                  scan.partition.num
                                                                                                                  
 
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
 
                                                                                                                  Number of partitions to be created
                                                                                                                  
+
                                                                                                                  Number of partitions to be created
                                                                                                                  
 
                                                                                                                  This parameter must be set when scan.partition.column, scan.partition.upper-bound, and scan.partition.upper-bound are all configured, and should not be set when other three parameters are not.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  scan.fetch-size
                                                                                                                  
+
                                                                                                                  scan.fetch-size
                                                                                                                  
 
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
 
                                                                                                                  Number of rows fetched from the database each time. The default value is 0, indicating the hint is ignored.
                                                                                                                  
+
                                                                                                                  Number of rows fetched from the database each time. The default value is 0, indicating the hint is ignored.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  lookup.cache.max-rows
                                                                                                                  
+
                                                                                                                  lookup.cache.max-rows
                                                                                                                  
 
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
 
                                                                                                                  Maximum number of cached rows in a dimension table. If the number of cached rows exceeds the value , old data will be deleted. The value -1 indicates that data cache disabled.
                                                                                                                  
+
                                                                                                                  Maximum number of cached rows in a dimension table. If the number of cached rows exceeds the value , old data will be deleted. The value -1 indicates that data cache disabled.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  lookup.cache.ttl
                                                                                                                  
+
                                                                                                                  lookup.cache.ttl
                                                                                                                  
 
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
 
                                                                                                                  Maximum time to live (TTL) of for every rows in lookup cache. Caches exceeding the TTL will be expired. The format is {length value}{time unit label}, for example, 123ms, 321s. The supported time units include d, h, min, s, and ms (default unit).
                                                                                                                  
+
                                                                                                                  Maximum time to live (TTL) of for every rows in lookup cache. Caches exceeding the TTL will be expired. The format is {length value}{time unit label}, for example, 123ms, 321s. The supported time units include d, h, min, s, and ms (default unit).
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  lookup.max-retries
                                                                                                                  
+
                                                                                                                  lookup.max-retries
                                                                                                                  
 
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
 
                                                                                                                  Maximum number of attempts to obtain data from the dimension table. The default value is 3.
                                                                                                                  
+
                                                                                                                  Maximum number of attempts to obtain data from the dimension table. The default value is 3.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  
                                                                                                                   
 
 
 
 
                                                                                                                  Boolean
                                                                                                                  
 
                                                                                                                  Whether missing fields and rows will be skipped or failed. The default value is false, indicating that an error will be thrown.
                                                                                                                  
+
                                                                                                                  Whether to skip the field or row or throws an error when a field to be parsed is missing. The default value is false, indicating that no error will be thrown.
                                                                                                                  
                                                                                                                   		
 
                                                                                                                  
 
                                                                                                                  json.ignore-parse-errors
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0416.html b/docs/dli/sqlreference/dli_08_0416.html
index 833ccd20..ebad7f34 100644
--- a/docs/dli/sqlreference/dli_08_0416.html
+++ b/docs/dli/sqlreference/dli_08_0416.html
@@ -21,7 +21,7 @@
 
 
 
                                                                                                                  
-
                                                                                                                  Parent topic: Flink Opensource SQL 1.12 Syntax Reference
                                                                                                                  
+
                                                                                                                  Parent topic: Flink OpenSource SQL 1.12 Syntax Reference
                                                                                                                  
 
                                                                                                                  
 
 
diff --git a/docs/dli/sqlreference/dli_08_0424.html b/docs/dli/sqlreference/dli_08_0424.html
index 1aed98e9..79de96cb 100644
--- a/docs/dli/sqlreference/dli_08_0424.html
+++ b/docs/dli/sqlreference/dli_08_0424.html
@@ -11,7 +11,7 @@
 
 
 
                                                                                                                  
-
                                                                                                                  Parent topic: Flink Opensource SQL 1.12 Syntax Reference
                                                                                                                  
+
                                                                                                                  Parent topic: Flink OpenSource SQL 1.12 Syntax Reference
                                                                                                                  
 
                                                                                                                  
 
 
diff --git a/docs/dli/sqlreference/dli_08_0431.html b/docs/dli/sqlreference/dli_08_0431.html
index 510077c3..005a0669 100644
--- a/docs/dli/sqlreference/dli_08_0431.html
+++ b/docs/dli/sqlreference/dli_08_0431.html
@@ -5,7 +5,7 @@
 
 
                                                                                                                  Description
                                                                                                                  This function is used to forcibly convert types.
                                                                                                                  
 
                                                                                                                  
-
                                                                                                                  Precautions
                                                                                                                  If the input is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  Precautions
                                                                                                                  • If the input is NULL, NULL is returned.
                                                                                                                  • The cast function does not support converting a string to the JSON format.
                                                                                                                  
 
                                                                                                                  
 
                                                                                                                  Example 1: Convert the amount value to an integer.
                                                                                                                  The following example converts the amount value to an integer.
                                                                                                                  
 
                                                                                                                  insert into temp select cast(amount as INT) from source_stream;
                                                                                                                  
diff --git a/docs/dli/sqlreference/dli_08_0439.html b/docs/dli/sqlreference/dli_08_0439.html
new file mode 100644
index 00000000..91b0b42e
--- /dev/null
+++ b/docs/dli/sqlreference/dli_08_0439.html
@@ -0,0 +1,232 @@
+
+
+
                                                                                                                  FileSystem Result Table
                                                                                                                  
+
                                                                                                                  Function
                                                                                                                  The FileSystem result (sink) table is used to export data to the HDFS or OBS file system. It is applicable to scenarios such as data dumping, big data analysis, data backup, and active, deep, or cold archiving.
                                                                                                                  
+
                                                                                                                  Considering that the input stream can be unbounded, you can put the data in each bucket into part files of a limited size. Data can be written into a bucket based on time. For example, you can write data into a bucket every hour. This bucket contains the records received within one hour, and
                                                                                                                  
+
                                                                                                                  data in the bucket directory is split into multiple part files. Each sink bucket that receives data contains at least one part file for each subtask. Other part files are created based on the configured rolling policy. For Row Formats, the default rolling policy is based on the part file size. You need to specify the maximum timeout period for opening a file and the timeout period for the inactive state after closing a file. Bulk Formats are rolled each time a checkpoint is created. You can add other rolling conditions based on size or time.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • To use FileSink in STREAMING mode, you need to enable the checkpoint function. Part files are generated only when the checkpoint is successful. If the checkpoint function is not enabled, the files remain in the in-progress or pending state, and downstream systems cannot securely read the file data.
                                                                                                                  • The number recorded by the sink end operator is the number of checkpoints, not the actual volume of the sent data. For the actual volume, see the number recorded by the streaming-writer or StreamingFileWriter operator.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                   1
+ 2
+ 3
+ 4
+ 5
+ 6
+ 7
+ 8
+ 9
+10
+11
                                                                                                                  CREATE TABLE sink_table (
+   name string,
+   num INT,
+   p_day string,
+   p_hour string
+) partitioned by (p_day, p_hour) WITH (
+   'connector' = 'filesystem',
+   'path' = 'obs://*** ',
+   'format' = 'parquet',
+   'auto-compaction' = 'true'
+);
+
                                                                                                                  
+
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Usage
                                                                                                                  • Rolling Policy
                                                                                                                    The Rolling Policy defines when a given in-progress part file will be closed and moved to the pending and later to finished state. Part files in the "finished" state are the ones that are ready for viewing and are guaranteed to contain valid data that will not be reverted in case of failure.
                                                                                                                    
+
                                                                                                                    In STREAMING mode, the Rolling Policy in combination with the checkpointing interval (pending files become finished on the next checkpoint) control how quickly part files become available for downstream readers and also the size and number of these parts. For details, see Parameters.
                                                                                                                    
+
                                                                                                                  • Part File Lifecycle
                                                                                                                    To use the output of the FileSink in downstream systems, we need to understand the naming and lifecycle of the output files produced.
                                                                                                                    
+
                                                                                                                    Part files can be in one of three states:
                                                                                                                    
+
                                                                                                                    • In-progress: The part file that is currently being written to is in-progress.
                                                                                                                    • Pending: Closed (due to the specified rolling policy) in-progress files that are waiting to be committed.
                                                                                                                    • Finished: On successful checkpoints (STREAMING) or at the end of input (BATCH) pending files transition to Finished
                                                                                                                    
+
                                                                                                                    Only finished files are safe to read by downstream systems as those are guaranteed to not be modified later.
                                                                                                                    
+
                                                                                                                    By default, the file naming strategy is as follows:
                                                                                                                    
+
                                                                                                                    • In-progress / Pending: part-<uid>-<partFileIndex>.inprogress.uid
                                                                                                                    • Finished: part-<uid>-<partFileIndex>
                                                                                                                    
+
                                                                                                                    uid is a random ID assigned to a subtask of the sink when the subtask is instantiated. This uid is not fault-tolerant so it is regenerated when the subtask recovers from a failure.
                                                                                                                    
+
                                                                                                                  • Compaction
                                                                                                                    FileSink supports compaction of the pending files, which allows the application to have smaller checkpoint interval without generating a lot of small files.
                                                                                                                    
+
                                                                                                                    Once enabled, the compaction happens between the files become pending and get committed. The pending files will be first committed to temporary files whose path starts with a dot (.). Then these files will be compacted according to the strategy by the compactor specified by the users, and the new compacted pending files will be generated. Then these pending files will be emitted to the committer to be committed to the formal files. After that, the source files will be removed.
                                                                                                                    
+
                                                                                                                  • Partitions
                                                                                                                    Filesystem sink supports the partitioning function. Partitions are generated based on the selected fields by using the partitioned by syntax. The following is an example:
                                                                                                                    
+
                                                                                                                    path
+└── datetime=2022-06-25
+    └── hour=10
+        ├── part-0.parquet
+        ├── part-1.parquet
+└── datetime=2022-06-26
+    └── hour=16
+        ├── part-0.parquet
+    └── hour=17
+        ├── part-0.parquet
                                                                                                                    
+
                                                                                                                    Similar to files, partitions also need to be submitted to notify downstream applications that files in the partitions can be securely read. Filesystem sink provides multiple configuration submission policies.
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter description
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Default Value
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  connector
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  None
                                                                                                                  
+
                                                                                                                  String
                                                                                                                  
+
                                                                                                                  The value is fixed at filesystem.
                                                                                                                  
+
                                                                                                                  path
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  None
                                                                                                                  
+
                                                                                                                  String
                                                                                                                  
+
                                                                                                                  OBS path
                                                                                                                  
+
                                                                                                                  format
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  None
                                                                                                                  
+
                                                                                                                  String
                                                                                                                  
+
                                                                                                                  File format
                                                                                                                  
+
                                                                                                                  Available values are: csv and parquet
                                                                                                                  
+
                                                                                                                  sink.rolling-policy.file-size
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  128 MB
                                                                                                                  
+
                                                                                                                  MemorySize
                                                                                                                  
+
                                                                                                                  Maximum size of a part file. If the size of a part file exceeds this value, a new file will be generated.
                                                                                                                  
+
                                                                                                                   NOTE: 
                                                                                                                  The Rolling Policy defines when a given in-progress part file will be closed and moved to the pending and later to finished state. Part files in the "finished" state are the ones that are ready for viewing and are guaranteed to contain valid data that will not be reverted in case of failure. In STREAMING mode, the Rolling Policy in combination with the checkpointing interval (pending files become finished on the next checkpoint) control how quickly part files become available for downstream readers and also the size and number of these parts.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  sink.rolling-policy.rollover-interval
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  30 min
                                                                                                                  
+
                                                                                                                  Duration
                                                                                                                  
+
                                                                                                                  Maximum duration that a part file can be opened. If a part file is opened longer than the maximum duration, a new file will be generated in rolling mode. The default value is 30 minutes so that there will not be a large number of small files. The check frequency is specified by sink.rolling-policy.check-interval.
                                                                                                                  
+
                                                                                                                   NOTE: 
                                                                                                                  There must be a space between the number and the unit.
                                                                                                                  
+
                                                                                                                  The supported time units include d, h, min, s, and ms.
                                                                                                                  
+
                                                                                                                  For bulk files (parquet, orc, and avro), the checkpoint interval also controls the maximum open duration of a part file.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  sink.rolling-policy.check-interval
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  1 min
                                                                                                                  
+
                                                                                                                  Duration
                                                                                                                  
+
                                                                                                                  Check interval of the time-based rolling policy
                                                                                                                  
+
                                                                                                                  This parameter controls the frequency of checking whether a file should be rolled based on sink.rolling-policy.rollover-interval.
                                                                                                                  
+
                                                                                                                  auto-compaction
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  false
                                                                                                                  
+
                                                                                                                  Boolean
                                                                                                                  
+
                                                                                                                  Whether automatic compaction is enabled for the streaming sink. Data is first written to temporary files. After the checkpoint is complete, the temporary files generated by the checkpoint are compacted.
                                                                                                                  
+
                                                                                                                  compaction.file-size
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Size of sink.rolling-policy.file-size
                                                                                                                  
+
                                                                                                                  MemorySize
                                                                                                                  
+
                                                                                                                  Size of the files that will be compacted. The default value is the size of the files that will be rolled.
                                                                                                                  
+
                                                                                                                   NOTE: 
                                                                                                                  • Only files in the same checkpoint are compacted. The final files must be more than or equal to the number of checkpoints.
                                                                                                                  • If the compaction takes a long time, back pressure may occur and the checkpointing may be prolonged.
                                                                                                                  • After this function is enabled, final files are generated during checkpoint and a new file is opened to receive the data generated at the next checkpoint.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example 1
                                                                                                                  Use datagen to randomly generate data and write the data into the fileName directory in the OBS bucket bucketName. The file generation time is irrelevant to the checkpoint. When the file is opened more than 30 minutes or is bigger than 128 MB, a new file is generated.
                                                                                                                  create table orders(
+  name string,
+  num INT
+) with (
+  'connector' = 'datagen',
+  'rows-per-second' = '100', 
+  'fields.name.kind' = 'random', 
+  'fields.name.length' = '5' 
+);
+
+CREATE TABLE sink_table (
+   name string,
+   num INT
+) WITH (
+   'connector' = 'filesystem',
+   'path' = 'obs://bucketName/fileName',
+   'format' = 'csv',
+   'sink.rolling-policy.file-size'='128m',
+   'sink.rolling-policy.rollover-interval'='30 min'
+);
+INSERT into sink_table SELECT * from orders;
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example 2
                                                                                                                  Use datagen to randomly generate data and write the data into the fileName directory in the OBS bucket bucketName. The file generation time is relevant to the checkpoint. When the checkpoint interval is reached or the file size reaches 100 MB, a new file is generated.
                                                                                                                  create table orders(
+  name string,
+  num INT
+) with (
+  'connector' = 'datagen',
+  'rows-per-second' = '100', 
+  'fields.name.kind' = 'random', 
+  'fields.name.length' = '5' 
+);
+
+CREATE TABLE sink_table (
+   name string,
+   num INT
+) WITH (
+   'connector' = 'filesystem',
+   'path' = 'obs://bucketName/fileName',
+   'format' = 'csv',
+   'sink.rolling-policy.file-size'='128m',
+   'sink.rolling-policy.rollover-interval'='30 min',
+   'auto-compaction'='true',
+   'compaction.file-size'='100m'
+
+);
+INSERT into sink_table SELECT * from orders;
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Creating Result Tables
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_08_0460.html b/docs/dli/sqlreference/dli_08_0460.html
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+
+
+
+  
                                                                                                                  Creating a Datasource Connection with an Oracle Table
                                                                                                                  
+
+  
                                                                                                                  
+
                                                                                                                  
+
+
+
diff --git a/docs/dli/sqlreference/dli_08_0461.html b/docs/dli/sqlreference/dli_08_0461.html
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+
+
+
                                                                                                                  Creating a DLI Table and Associating It with Oracle
                                                                                                                  
+
                                                                                                                  Function
                                                                                                                  This statement is used to create a DLI table and associate it with an existing Oracle table.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Prerequisites
                                                                                                                  • Before creating a DLI table and associating it with Oracle, you need to create an enhanced datasource connection.
                                                                                                                    For details about operations on the management console, see .
                                                                                                                    
+
                                                                                                                  • Only enhanced datasource connections can be used to connect to Oracle, and only pay-per-use and yearly/monthly queues support enhanced datasource connections. So, only SQL jobs on pay-per-use and yearly/monthly queues can be connected to Oracle databases.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  1
+2
+3
+4
+5
+6
+7
+8
+9
                                                                                                                  CREATE TABLE [IF NOT EXISTS] TABLE_NAME
+  USING ORACLE OPTIONS (
+  'url'='xx',
+  'driver'='DRIVER_NAME',
+  'dbtable'='db_in_oracle.table_in_oracle',
+  'user' = 'xxx',
+  'password' = 'xxx',
+  'resource' = 'obs://rest-authinfo/tools/oracle/driver/ojdbc6.jar' 
+);
+
                                                                                                                  
+
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 CREATE TABLE keywords
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  url
                                                                                                                  
+
                                                                                                                  URL of the Oracle database.
                                                                                                                  
+
                                                                                                                  The URL can be in either of the following format:
                                                                                                                  
+
                                                                                                                  • Format 1: jdbc:oracle:thin:@host:port:SID, in which SID is the unique identifier of the Oracle database.
                                                                                                                  • Format 2: jdbc:oracle:thin:@//host:port/service_name. This format is recommended by Oracle. For a cluster, the SID of each node may differ, but their service name is the same.
                                                                                                                  
+
                                                                                                                  driver
                                                                                                                  
+
                                                                                                                  Oracle driver class name: oracle.jdbc.driver.OracleDriver
                                                                                                                  
+
                                                                                                                  dbtable
                                                                                                                  
+
                                                                                                                  Name of the table associated with the Oracle database or Username.Table name, for example, public.table_name.
                                                                                                                  
+
                                                                                                                  user
                                                                                                                  
+
                                                                                                                  Oracle username.
                                                                                                                  
+
                                                                                                                  password
                                                                                                                  
+
                                                                                                                  Oracle password.
                                                                                                                  
+
                                                                                                                  resource
                                                                                                                  
+
                                                                                                                  OBS path of the Oracle driver package.
                                                                                                                  
+
                                                                                                                  Example: obs://rest-authinfo/tools/oracle/driver/ojdbc6.jar
                                                                                                                  
+
                                                                                                                  If the driver JAR file defined in this parameter is updated, you need to restart the queue for the update to take effect.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example
                                                                                                                  Creating an Oracle datasource table
                                                                                                                  
+
                                                                                                                  1
+2
+3
+4
+5
+6
+7
+8
+9
                                                                                                                  CREATE TABLE IF NOT EXISTS oracleTest
+  USING ORACLE OPTIONS (
+  'url'='jdbc:oracle:thin:@//192.168.168.40:1521/helowin',
+  'driver'='oracle.jdbc.driver.OracleDriver',
+  'dbtable'='test.Student',
+  'user' = 'test',
+  'password' = 'test',
+  'resource' = 'obs://rest-authinfo/tools/oracle/driver/ojdbc6.jar'
+);
+
                                                                                                                  
+
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
+
diff --git a/docs/dli/sqlreference/dli_08_0462.html b/docs/dli/sqlreference/dli_08_0462.html
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--- /dev/null
+++ b/docs/dli/sqlreference/dli_08_0462.html
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+
+
+
                                                                                                                  Inserting Data to an Oracle Table
                                                                                                                  
+
                                                                                                                  Function
                                                                                                                  This statement is used to insert data into an associated Oracle table.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  • Insert the SELECT query result into a table.
                                                                                                                    1
+2
+3
+4
+5
+6
+7
                                                                                                                    INSERT INTO DLI_TABLE
+  SELECT field1,field2...
+  [FROM DLI_TEST]
+  [WHERE where_condition]
+  [LIMIT num]
+  [GROUP BY field]
+  [ORDER BY field] ...;
+
                                                                                                                    
+
+
                                                                                                                    
+
                                                                                                                  • Insert a data record into a table.
                                                                                                                    1
+2
                                                                                                                    INSERT INTO DLI_TABLE
+  VALUES values_row [, values_row ...];
+
                                                                                                                    
+
+
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  • Overwriting the inserted data
                                                                                                                    1
+2
+3
+4
+5
+6
+7
                                                                                                                    INSERT OVERWRITE TABLE DLI_TABLE
+  SELECT field1,field2...
+  [FROM DLI_TEST]
+  [WHERE where_condition]
+  [LIMIT num]
+  [GROUP BY field]
+  [ORDER BY field] ...;
+
                                                                                                                    
+
+
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  For details about the SELECT keywords, see Basic SELECT Statements.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  DLI_TABLE
                                                                                                                  
+
                                                                                                                  Name of the DLI table for which a datasource connection has been created.
                                                                                                                  
+
                                                                                                                  DLI_TEST
                                                                                                                  
+
                                                                                                                  indicates the table that contains the data to be queried.
                                                                                                                  
+
                                                                                                                  field1,field2..., field
                                                                                                                  
+
                                                                                                                  Column values in the DLI_TEST table must match the column values and types in the DLI_TABLE table.
                                                                                                                  
+
                                                                                                                  where_condition
                                                                                                                  
+
                                                                                                                  Query condition. 
                                                                                                                  
+
                                                                                                                  num
                                                                                                                  
+
                                                                                                                  Limit the query result. The num parameter supports only the INT type.
                                                                                                                  
+
                                                                                                                  values_row
                                                                                                                  
+
                                                                                                                  Value to be inserted to a table. Use commas (,) to separate columns.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Precautions
                                                                                                                  A DLI table is available.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example
                                                                                                                  • Query data in the user table and insert the data into the test table.
                                                                                                                    1
+2
+3
+4
+5
+6
                                                                                                                    INSERT INTO test
+  SELECT ATTR_EXPR
+  FROM user
+  WHERE user_name='cyz'
+  LIMIT 3
+  GROUP BY user_age
+
                                                                                                                    
+
+
                                                                                                                    
+
                                                                                                                  • Insert data 1 into the test table.
                                                                                                                    INSERT INTO test 
+  VALUES (1);
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
+
diff --git a/docs/dli/sqlreference/dli_08_0463.html b/docs/dli/sqlreference/dli_08_0463.html
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--- /dev/null
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@@ -0,0 +1,27 @@
+
+
+
                                                                                                                  Querying an Oracle Table
                                                                                                                  
+
                                                                                                                  Function
                                                                                                                  This statement is used to query data in an Oracle table.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  1
                                                                                                                  SELECT * FROM table_name LIMIT number;
+
                                                                                                                  
+
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  LIMIT is used to limit the query results. Only INT type is supported by the number parameter.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Precautions
                                                                                                                  If schema information is not specified during table creation, the query result contains the _id field for storing _id in the DOC file.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example
                                                                                                                  Querying data in the test_oracle table
                                                                                                                  
+
                                                                                                                  1
                                                                                                                  SELECT * FROM test_oracle limit 100;
+
                                                                                                                  
+
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
+
diff --git a/docs/dli/sqlreference/dli_08_0469.html b/docs/dli/sqlreference/dli_08_0469.html
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index 00000000..e60a35bf
--- /dev/null
+++ b/docs/dli/sqlreference/dli_08_0469.html
@@ -0,0 +1,80 @@
+
+
+
                                                                                                                  Overview
                                                                                                                  
+
                                                                                                                  The following table lists the functions provided by DLI, such as decode1, javahash, and max_pt.
                                                                                                                  
+
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Added functions
                                                                                                                  Syntax
                                                                                                                  
+
                                                                                                                  Value Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  decode1(<expression>, <search>, <result>[, <search>, <result>]...[, <default>])
                                                                                                                  
+
                                                                                                                  Data type of the argument
                                                                                                                  
+
                                                                                                                  Implements if-then-else branch selection.
                                                                                                                  
+
                                                                                                                  javahash(string a)
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Returns a hash value.
                                                                                                                  
+
                                                                                                                  max_pt(<table_full_name>)
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Returns the name of the largest level-1 partition that contains data in a partitioned table and reads the data of this partition.
                                                                                                                  
+
                                                                                                                  ordinal(bigint <nth>, <var1>, <var2>[,...])
                                                                                                                  
+
                                                                                                                  DOUBLE or DATETIME
                                                                                                                  
+
                                                                                                                  Sorts input variables in ascending order and returns the value at the position specified by nth.
                                                                                                                  
+
                                                                                                                  trans_array (<num_keys>, <separator>, <key1>,<key2>,…,<col1>,<col2>,<col3>) as (<key1>,<key2>,...,<col1>, <col2>)
                                                                                                                  
+
                                                                                                                  Data type of the argument
                                                                                                                  
+
                                                                                                                  Converts an array split by a fixed separator in a column into multiple rows.
                                                                                                                  
+
                                                                                                                  trunc_numeric(<number>[, bigint<decimal_places>])
                                                                                                                  
+
                                                                                                                  DOUBLE or DECIMAL
                                                                                                                  
+
                                                                                                                  Truncates the number value to a specified decimal place.
                                                                                                                  
+
                                                                                                                  url_decode(string <input>[, string <encoding>])
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Converts a string from the application/x-www-form-urlencoded MIME format to regular characters.
                                                                                                                  
+
                                                                                                                  url_encode(string <input>[, string <encoding>])
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Encodes a string in the application/x-www-form-urlencoded MIME format.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Other Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_08_0470.html b/docs/dli/sqlreference/dli_08_0470.html
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--- /dev/null
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+
+
+
                                                                                                                  Modifying Column Comments
                                                                                                                  
+
                                                                                                                  Function
                                                                                                                  You can modify the column comments of non-partitioned or partitioned tables.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  ALTER TABLE [db_name.]table_name CHANGE COLUMN col_name col_name col_type COMMENT 'col_comment';
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  • CHANGE COLUMN: Modify a column.
                                                                                                                  • COMMENT: column description
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  db_name
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Database name. Only letters, digits, and underscores (_) are allowed. The name cannot contain only digits or start with an underscore (_).
                                                                                                                  
+
                                                                                                                  table_name
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Table name
                                                                                                                  
+
                                                                                                                  col_name
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Column name. The value must be the name of an existing column.
                                                                                                                  
+
                                                                                                                  col_type
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Column data type specified when the table is created, which cannot be modified.
                                                                                                                  
+
                                                                                                                  col_comment
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Column comment after modification. The comment can contain a maximum of 1024 bytes.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example
                                                                                                                  Change the comment of the c1 column in the t1 table to the new comment.
                                                                                                                  
+
                                                                                                                  1
                                                                                                                  ALTER TABLE t1 CHANGE COLUMN c1 c1 STRING COMMENT 'the new comment';
+
                                                                                                                  
+
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Modifying a Table
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_08_0471.html b/docs/dli/sqlreference/dli_08_0471.html
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+
+
                                                                                                                  Date Functions
                                                                                                                  
+
                                                                                                                  
+
+
diff --git a/docs/dli/sqlreference/dli_08_0472.html b/docs/dli/sqlreference/dli_08_0472.html
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+
+
+
                                                                                                                  String Functions
                                                                                                                  
+
                                                                                                                  
+
+
diff --git a/docs/dli/sqlreference/dli_08_0473.html b/docs/dli/sqlreference/dli_08_0473.html
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+
+
+
                                                                                                                  Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
+
+
                                                                                                                  
+
                                                                                                                  Parent topic: Built-in Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_08_0474.html b/docs/dli/sqlreference/dli_08_0474.html
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+
+
+
                                                                                                                  Aggregate Functions
                                                                                                                  
+
                                                                                                                  
+
+
diff --git a/docs/dli/sqlreference/dli_08_0475.html b/docs/dli/sqlreference/dli_08_0475.html
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+
+
+
                                                                                                                  Window Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
+
+
                                                                                                                  
+
                                                                                                                  Parent topic: Built-in Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_08_0476.html b/docs/dli/sqlreference/dli_08_0476.html
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+
+
+
                                                                                                                  Other Functions
                                                                                                                  
+
                                                                                                                  
+
+
diff --git a/docs/dli/sqlreference/dli_08_0477.html b/docs/dli/sqlreference/dli_08_0477.html
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+
+
+
                                                                                                                  Spark Open Source Commands
                                                                                                                  
+
                                                                                                                  This section describes the open source Spark SQL syntax supported by DLI. For details about the syntax, parameters, and examples, see Spark SQL Syntax.
                                                                                                                  
+
+
                                                                                                                  
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+
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+
+
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+
+
                                                                                                                  Table 1 DLI Spark open source commands
                                                                                                                  Function
                                                                                                                  
+
                                                                                                                  Syntax Example
                                                                                                                  
+
                                                                                                                  DLI Spark 2.4.5
                                                                                                                  
+
                                                                                                                  DLI Spark 3.3.1
                                                                                                                  
+
                                                                                                                  Creating a database
                                                                                                                  
+
                                                                                                                  CREATE DATABASE testDB;
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Creating a DLI table
                                                                                                                  
+
                                                                                                                  create table if not exists testDB.testTable1(
                                                                                                                  
+
                                                                                                                  id int,
                                                                                                                  
+
                                                                                                                  age int,
                                                                                                                  
+
                                                                                                                  money double
                                                                                                                  
+
                                                                                                                  );
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Creating an OBS table
                                                                                                                  
+
                                                                                                                  create table if not exists testDB.testTable2(
                                                                                                                  
+
                                                                                                                  id int,
                                                                                                                  
+
                                                                                                                  age int,
                                                                                                                  
+
                                                                                                                  money double
                                                                                                                  
+
                                                                                                                  )
                                                                                                                  
+
                                                                                                                  LOCATION 'obs://bucketName/filePath'
                                                                                                                  
+
                                                                                                                  partitioned by (dt string)
                                                                                                                  
+
                                                                                                                  row format delimited fields terminated by ','
                                                                                                                  
+
                                                                                                                  STORED as TEXTFILE;
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Inserting test data
                                                                                                                  
+
                                                                                                                  insert into table testDB.testTable2 values
                                                                                                                  
+
                                                                                                                  (1, 18,  3.14, "20240101" ),
                                                                                                                  
+
                                                                                                                  (2, 18,  3.15, "20240102" );
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Changing database attributes
                                                                                                                  
+
                                                                                                                  ALTER DATABASE testDB SET DBPROPERTIES ('Edited-by' = 'John');
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Changing the path for storing database files on OBS
                                                                                                                  
+
                                                                                                                  ALTER DATABASE testDB SET LOCATION 'obs://bucketName/filePath';
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Changing a table name
                                                                                                                  
+
                                                                                                                  ALTER TABLE testDB.testTable1 RENAME TO testDB.testTable101;
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Changing the name of a partition in a table
                                                                                                                  
+
                                                                                                                  ALTER TABLE testDB.testTable2 PARTITION ( dt='20240101') RENAME TO PARTITION ( dt='20240103');
                                                                                                                  
+
                                                                                                                  It only supports renaming partitions of tables stored in OBS, and the storage path of the table in OBS will not change.
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Adding a column
                                                                                                                  
+
                                                                                                                  ALTER TABLE testDB.testTable1 ADD COLUMNS (name string);
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Dropping a column
                                                                                                                  
+
                                                                                                                  ALTER TABLE testDB.testTable1 DROP columns (money);
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Changing the name of a column
                                                                                                                  
+
                                                                                                                  ALTER TABLE testDB.testTable1 RENAME COLUMN age TO years_of_age;
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Modifying column comments
                                                                                                                  
+
                                                                                                                  ALTER TABLE testDB.testTable1 ALTER COLUMN age COMMENT "new comment";
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Replacing a specified column
                                                                                                                  
+
                                                                                                                  ALTER TABLE testDB.testTable1 REPLACE COLUMNS (name string, ID int COMMENT 'new comment');
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Customizing table attributes
                                                                                                                  
+
                                                                                                                  ALTER TABLE testDB.testTable1 SET TBLPROPERTIES ('aaa' = 'bbb');
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Adding or modifying table comments
                                                                                                                  
+
                                                                                                                  ALTER TABLE testDB.testTable1 SET TBLPROPERTIES ('comment' = 'test');
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Changing the storage format of a table
                                                                                                                  
+
                                                                                                                  ALTER TABLE testDB.testTable1 SET fileformat csv;
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Deleting a table attribute
                                                                                                                  
+
                                                                                                                  ALTER TABLE testDB.testTable1 UNSET TBLPROPERTIES ('test');
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Deleting table comments
                                                                                                                  
+
                                                                                                                  ALTER TABLE testDB.testTable1 UNSET TBLPROPERTIES ('comment');
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Displaying column information
                                                                                                                  
+
                                                                                                                  DESCRIBE database_name.table_name col_name;
                                                                                                                  
+
                                                                                                                  Example: DESCRIBE testDB.testTable1 id;
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Displaying column information
                                                                                                                  
+
                                                                                                                  DESCRIBE table_name table_name.col_name;
                                                                                                                  
+
                                                                                                                  Example: DESCRIBE testTable1 testTable1.id;
                                                                                                                  
+
                                                                                                                  It only supports viewing the column information for tables in the current database.
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Returning metadata information of a query statement
                                                                                                                  
+
                                                                                                                  DESCRIBE QUERY SELECT age, sum(age) FROM testDB.testTable1 GROUP BY age;
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Returning metadata information of inserted data
                                                                                                                  
+
                                                                                                                  DESCRIBE QUERY VALUES(100, 10, 10000.20D) AS testTable1(id, age, money);
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Returning metadata information of a table
                                                                                                                  
+
                                                                                                                  DESCRIBE QUERY TABLE testTable1;
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Returning metadata information of a column in a table
                                                                                                                  
+
                                                                                                                  DESCRIBE FROM testTable1 SELECT age;
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Returning the table creation statements for a table
                                                                                                                  
+
                                                                                                                  SHOW CREATE TABLE testDB.testTable1 AS SERDE;
                                                                                                                  
+
                                                                                                                  When executing this statement in Spark 3.3.1, it only applies to query the table creation statements for Hive tables.
                                                                                                                  
+
                                                                                                                  Not supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Returning the table creation statements for a table
                                                                                                                  
+
                                                                                                                  SHOW CREATE TABLE testDB.testTable1;
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  Supported
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Spark SQL Syntax Reference
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_abs.html b/docs/dli/sqlreference/dli_spark_abs.html
new file mode 100644
index 00000000..f369cbc0
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_abs.html
@@ -0,0 +1,49 @@
+
+
+
                                                                                                                  abs
                                                                                                                  
+
                                                                                                                  This function is used to calculate the absolute value of an input parameter.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  abs(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE or INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select abs(null);
                                                                                                                  
+
                                                                                                                  The value 1 is returned.
                                                                                                                  
+
                                                                                                                  select abs(-1);
                                                                                                                  
+
                                                                                                                  The value 3.1415926 is returned.
                                                                                                                  
+
                                                                                                                  select abs(-3.1415926);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_add_months.html b/docs/dli/sqlreference/dli_spark_add_months.html
new file mode 100644
index 00000000..48e37123
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_add_months.html
@@ -0,0 +1,62 @@
+
+
+
                                                                                                                  add_months
                                                                                                                  
+
                                                                                                                  This function is used to calculate the date after a date value is increased by a specified number of months. That is, it calculates the data that is num_months after start_date.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  add_months(string start_date, int num_months)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  start_date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE or STRING
                                                                                                                  
+
                                                                                                                  Start date
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  num_months
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  INT
                                                                                                                  
+
                                                                                                                  Number of months to be added
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The date that is num_months after start_date is returned, in the yyyy-mm-dd format.
                                                                                                                  
+
                                                                                                                  The return value is of the DATE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of start_date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of start_date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of start_date is NULL, an error is reported.
                                                                                                                  • If the value of num_months is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2023-05-26 is returned.
                                                                                                                  
+
                                                                                                                  select add_months('2023-02-26',3);
                                                                                                                  
+
                                                                                                                  The value 2023-05-14 is returned.
                                                                                                                  
+
                                                                                                                  select add_months('2023-02-14 21:30:00',3);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select add_months('20230815',3);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select add_months('2023-08-15 20:00:00',null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_aocs.html b/docs/dli/sqlreference/dli_spark_aocs.html
new file mode 100644
index 00000000..66e55831
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_aocs.html
@@ -0,0 +1,51 @@
+
+
+
                                                                                                                  acos
                                                                                                                  
+
                                                                                                                  This function is used to return the arc cosine value of a given angle a.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  acos(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value range is [-1,1]. The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type. The value ranges from 0 to π.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of a is not within the range [-1,1], NaN is returned.
                                                                                                                  • If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 3.141592653589793 is returned.
                                                                                                                  
+
                                                                                                                  select acos(-1);
                                                                                                                  
+
                                                                                                                  The value 0 is returned.
                                                                                                                  
+
                                                                                                                  select acos(1);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select acos(null);
                                                                                                                  
+
                                                                                                                  The value NAN is returned.
                                                                                                                  
+
                                                                                                                  select acos(10);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_ascii.html b/docs/dli/sqlreference/dli_spark_ascii.html
new file mode 100644
index 00000000..0d991d85
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_ascii.html
@@ -0,0 +1,49 @@
+
+
+
                                                                                                                  ascii
                                                                                                                  
+
                                                                                                                  This function is used to return the ASCII code of the first character in str.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  ascii(string <str>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  If the value is of the BIGINT, DOUBLE, DECIMAL, or DATETIME type, the value is automatically converted to the STRING type for calculation.
                                                                                                                  
+
                                                                                                                  Example: ABC
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of str is not of the STRING, BIGINT, DOUBLE, DECIMAL, or DATETIME type, an error is reported.
                                                                                                                  • If the value of str is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Returns the ASCII code of the first character in string ABC. An example command is as follows:
                                                                                                                    The value 97 is returned.
                                                                                                                    select ascii('ABC'); 
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  • The value of the input parameter is NULL. An example command is as follows:
                                                                                                                    The value NULL is returned.
                                                                                                                    select ascii(null);
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_asin.html b/docs/dli/sqlreference/dli_spark_asin.html
new file mode 100644
index 00000000..a44fe15f
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_asin.html
@@ -0,0 +1,51 @@
+
+
+
                                                                                                                  asin
                                                                                                                  
+
                                                                                                                  This function is used to return the arc sine value of a given angle a.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  asin(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value range is [-1,1]. The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type. The value ranges from -π/2 to π/2.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of a is not within the range [-1,1], NaN is returned.
                                                                                                                  • If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 1.5707963267948966 is returned.
                                                                                                                  
+
                                                                                                                  select asin(1);
                                                                                                                  
+
                                                                                                                  The value 0.6435011087932844 is returned.
                                                                                                                  
+
                                                                                                                  select asin(0.6);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select asin(null);
                                                                                                                  
+
                                                                                                                  The value NAN is returned.
                                                                                                                  
+
                                                                                                                  select asin(10);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_atan.html b/docs/dli/sqlreference/dli_spark_atan.html
new file mode 100644
index 00000000..3ab5d8b0
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_atan.html
@@ -0,0 +1,49 @@
+
+
+
                                                                                                                  atan
                                                                                                                  
+
                                                                                                                  This function is used to return the arc tangent value of a given angle a.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  atan(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type. The value ranges from -π/2 to π/2.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of a is not within the range [-1,1], NaN is returned.
                                                                                                                  • If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 0.7853981633974483 is returned.
                                                                                                                  
+
                                                                                                                  select atan(1);
                                                                                                                  
+
                                                                                                                  The value 0.5404195002705842 is returned.
                                                                                                                  
+
                                                                                                                  select atan(0.6);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select atan(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_avg.html b/docs/dli/sqlreference/dli_spark_avg.html
new file mode 100644
index 00000000..6051825a
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_avg.html
@@ -0,0 +1,54 @@
+
+
+
                                                                                                                  avg
                                                                                                                  
+
                                                                                                                  This function is used to return the average value.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  avg(col), avg(DISTINCT col)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  col
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  All data types
                                                                                                                  
+
                                                                                                                  The value can be of any data type and can be converted to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of col is NULL, the column is not involved in calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Calculates the average number of items across all warehouses. An example command is as follows:
                                                                                                                    select avg(items) from warehouse;
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    _c0        
+100.0      
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  • Calculates the average inventory of all items in each warehouse when used with group by. An example command is as follows:
                                                                                                                    select warehourseId, avg(items) from warehourse group by warehourseId;
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    warehouseId _c1
+city1    155       
+city2    101        
+city3    194        
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Aggregate Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_bin.html b/docs/dli/sqlreference/dli_spark_bin.html
new file mode 100644
index 00000000..f48696d0
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_bin.html
@@ -0,0 +1,52 @@
+
+
+
                                                                                                                  bin
                                                                                                                  
+
                                                                                                                  This function is used to return the binary format of a.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  bin(BIGINT a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value is an integer.
                                                                                                                  
+
                                                                                                                  If the value is not of the BIGINT type, the system will implicitly convert it to the BIGINT type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 1 is returned.
                                                                                                                  
+
                                                                                                                  select bin(1);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select bin(null);
                                                                                                                  
+
                                                                                                                  The value 1000 is returned.
                                                                                                                  
+
                                                                                                                  select bin(8);
                                                                                                                  
+
                                                                                                                  The value 1000 is returned.
                                                                                                                  select bin(8.123456);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_bround.html b/docs/dli/sqlreference/dli_spark_bround.html
new file mode 100644
index 00000000..6775ee5b
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_bround.html
@@ -0,0 +1,63 @@
+
+
+
                                                                                                                  bround
                                                                                                                  
+
                                                                                                                  This function is used to return a value that is rounded off to d decimal places.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  bround(DOUBLE a, INT d)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  It indicates the value that needs to be rounded.
                                                                                                                  
+
                                                                                                                  The digit 5 is rounded up if the digit before 5 is an odd number and rounded down if the digit before 5 is an even number.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  d
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  It indicates the number of decimal places to which the value needs to be rounded.
                                                                                                                  
+
                                                                                                                  If the value is not of the INT type, the system will implicitly convert it to the INT type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a or d is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 1 is returned.
                                                                                                                  
+
                                                                                                                  select bin(1);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select bin(null);
                                                                                                                  
+
                                                                                                                  The value 1000 is returned.
                                                                                                                  
+
                                                                                                                  select bin(8);
                                                                                                                  
+
                                                                                                                  The value 1000 is returned.
                                                                                                                  
+
                                                                                                                  select bin(8.123456);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_cbrt.html b/docs/dli/sqlreference/dli_spark_cbrt.html
new file mode 100644
index 00000000..e43b579c
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_cbrt.html
@@ -0,0 +1,49 @@
+
+
+
                                                                                                                  cbrt
                                                                                                                  
+
                                                                                                                  This function is used to return the cube root of a.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  cbrt(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 3 is returned.
                                                                                                                  select cbrt(27);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  The value 3.3019272488946267 is returned.
                                                                                                                  select cbrt(36);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  select cbrt(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_ceil.html b/docs/dli/sqlreference/dli_spark_ceil.html
new file mode 100644
index 00000000..a8c1645c
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_ceil.html
@@ -0,0 +1,49 @@
+
+
+
                                                                                                                  ceil
                                                                                                                  
+
                                                                                                                  This function is used to round up a to the nearest integer.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  ceil(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DECIMAL type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2 is returned.
                                                                                                                  
+
                                                                                                                  select ceil(1.3);
                                                                                                                  
+
                                                                                                                  The value -1 is returned.
                                                                                                                  
+
                                                                                                                  select ceil(-1.3);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select ceil(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_char_matchcount.html b/docs/dli/sqlreference/dli_spark_char_matchcount.html
new file mode 100644
index 00000000..077ace54
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_char_matchcount.html
@@ -0,0 +1,46 @@
+
+
+
                                                                                                                  char_matchcount
                                                                                                                  
+
                                                                                                                  This parameter is used to return the number of characters in str1 that appear in str2.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  char_matchcount(string <str1>, string <str2>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str1, str2
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  str1 and str2 to be calculated
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of str1 or str2 is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 3 is returned.
                                                                                                                  
+
                                                                                                                  select char_matchcount('abcz','abcde');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select char_matchcount(null,'abcde');
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_concat.html b/docs/dli/sqlreference/dli_spark_concat.html
new file mode 100644
index 00000000..07afdba4
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_concat.html
@@ -0,0 +1,83 @@
+
+
+
                                                                                                                  concat
                                                                                                                  
+
                                                                                                                  This function is used to concatenate arrays or strings.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  If multiple arrays are used as the input, all elements in the arrays are connected to generate a new array.
                                                                                                                  
+
                                                                                                                  concat(array<T> <a>, array<T> <b>[,...])
                                                                                                                  
+
                                                                                                                  If multiple strings are used as the input, the strings are connected to generate a new string.
                                                                                                                  
+
                                                                                                                  concat(string <str1>, string <str2>[,...])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  • Using arrays as the input
+
                                                                                                                    
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                    Table 1 Parameters
                                                                                                                    Parameter
                                                                                                                    
+
                                                                                                                    Mandatory
                                                                                                                    
+
                                                                                                                    Type
                                                                                                                    
+
                                                                                                                    Description
                                                                                                                    
+
                                                                                                                    a, b
                                                                                                                    
+
                                                                                                                    Yes
                                                                                                                    
+
                                                                                                                    STRING
                                                                                                                    
+
                                                                                                                    Array
                                                                                                                    
+
                                                                                                                    In array<T>, T indicates the data type of the elements in the array. The elements in the array can be of any type.
                                                                                                                    
+
                                                                                                                    The data types of elements in arrays a and b must be the same. If the values of the elements in an array are NULL, the elements are involved in the operation.
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                  • Using strings as the input
+
                                                                                                                    
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                    Table 2 Parameters
                                                                                                                    Parameter
                                                                                                                    
+
                                                                                                                    Mandatory
                                                                                                                    
+
                                                                                                                    Type
                                                                                                                    
+
                                                                                                                    Description
                                                                                                                    
+
                                                                                                                    str1, str2
                                                                                                                    
+
                                                                                                                    Yes
                                                                                                                    
+
                                                                                                                    STRING
                                                                                                                    
+
                                                                                                                    String
                                                                                                                    
+
                                                                                                                    If the value of the input parameter is of the BIGINT, DOUBLE, DECIMAL, or DATETIME type, the value is automatically converted to the STRING type for calculation. For other types of values, an error is reported.
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the ARRAY or STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the return value is of the ARRAY type and any input array is NULL, NULL is returned.
                                                                                                                  • If the return value is of the STRING type and there is no parameter or any parameter is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Connect the array (1, 2) and array (2, -2). An example command is as follows:
                                                                                                                    The value [1, 2, 2, -2] is returned.
                                                                                                                    select concat(array(1, 2), array(2, -2));
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                  • Any array is NULL. An example command is as follows:
                                                                                                                    The value NULL is returned.
                                                                                                                    select concat(array(10, 20), null);
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                  • Connect strings ABC and DEF. An example command is as follows:
                                                                                                                    The value ABCDEF is returned.
                                                                                                                    select concat('ABC','DEF');
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                  • The input is empty. An example command is as follows:
                                                                                                                    The value NULL is returned.
                                                                                                                    select concat();
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                  • The value of any string is NULL. An example command is as follows:
                                                                                                                    The value NULL is returned.
                                                                                                                    select concat('abc', 'def', null);
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_concat_ws.html b/docs/dli/sqlreference/dli_spark_concat_ws.html
new file mode 100644
index 00000000..c7916024
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_concat_ws.html
@@ -0,0 +1,71 @@
+
+
+
                                                                                                                  concat_ws
                                                                                                                  
+
                                                                                                                  This function is used to return a string concatenated from multiple input strings that are separated by specified separators.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  concat_ws(string <separator>, string <str1>, string <str2>[,...])
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  concat_ws(string <separator>, array<string> <a>)
                                                                                                                  
+
                                                                                                                  Returns the result of joining all the strings in the parameters or the elements in an array using a specified separator.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  separator
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Separator of the STRING type
                                                                                                                  
+
                                                                                                                  str1, str2
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  At least two strings must be specified.
                                                                                                                  
+
                                                                                                                  The value is of the STRING type. If the value is of the BIGINT, DECIMAL, DOUBLE, or DATETIME type, the value is implicitly converted to the STRING type for calculation.
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  ARRAY
                                                                                                                  
+
                                                                                                                  The elements in an array are of the STRING type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING or STRUCT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of str1 or str2 is not of the STRING, BIGINT, DECIMAL, DOUBLE, or DATETIME type, an error is reported.
                                                                                                                  • If the value of the parameter (string to be concatenated) is NULL, the parameter is ignored.
                                                                                                                  • If there is no input parameter (string to be concatenated), NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Use a colon (:) to connect strings ABC and DEF. An example command is as follows:
                                                                                                                    The value ABC:DEF is returned.
                                                                                                                    select concat_ws(':','ABC','DEF');
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                  • The value of any input parameter is NULL. An example command is as follows:
                                                                                                                    The value avg:18 is returned.
                                                                                                                    select concat_ws(':','avg',null,'18');
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                  • Use colons (:) to connect elements in the array ('name', 'lilei'). An example command is as follows:
                                                                                                                    The value name:lilei is returned.
                                                                                                                    select concat_ws(':',array('name', 'lilei'));
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_conv.html b/docs/dli/sqlreference/dli_spark_conv.html
new file mode 100644
index 00000000..70118264
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_conv.html
@@ -0,0 +1,75 @@
+
+
+
                                                                                                                  conv
                                                                                                                  
+
                                                                                                                  This function is used to convert a number from from_base to to_base.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  conv(BIGINT num, INT from_base, INT to_base)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  num
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  Number whose base needs to be converted
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  from_base
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  It represents the base from which the number is converted.
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  to_base
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  It represents the base to which the number is converted.
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of num, from_base, or to_base is NULL, NULL is returned.
                                                                                                                  • The conversion process works with 64-bit precision and returns NULL when there is overflow.
                                                                                                                  • If the value of num is a decimal, it will be converted to an integer before the base conversion, and the decimal part will be discarded.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 8 is returned.
                                                                                                                  
+
                                                                                                                  select conv('1000', 2, 10);
                                                                                                                  
+
                                                                                                                  The value B is returned.
                                                                                                                  
+
                                                                                                                  select conv('1011', 2, 16);
                                                                                                                  
+
                                                                                                                  The value 703710 is returned.
                                                                                                                  
+
                                                                                                                  select conv('ABCDE', 16, 10);
                                                                                                                  
+
                                                                                                                  The value 27 is returned.
                                                                                                                  
+
                                                                                                                  select conv(1000.123456, 3.123456, 10.123456);
                                                                                                                  
+
                                                                                                                  The value 18446744073709551589 is returned.
                                                                                                                  
+
                                                                                                                  select conv(-1000.123456, 3.123456, 10.123456);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select conv('1100', null, 10);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_corr.html b/docs/dli/sqlreference/dli_spark_corr.html
new file mode 100644
index 00000000..0a975939
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_corr.html
@@ -0,0 +1,60 @@
+
+
+
                                                                                                                  corr
                                                                                                                  
+
                                                                                                                  This function is used to return the correlation coefficient between two columns of numerical values.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  corr(col1, col2)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  col1
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, INT, SMALLINT, TINYINT, FLOAT, or DECIMAL
                                                                                                                  
+
                                                                                                                  Columns with a data type of numeric. If the value is of any other type, NULL is returned.
                                                                                                                  
+
                                                                                                                  col2
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, INT, SMALLINT, TINYINT, FLOAT, or DECIMAL
                                                                                                                  
+
                                                                                                                  Columns with a data type of numeric. If the values are of any other type, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Calculates the correlation coefficient between the inventory (items) and the price of all products. An example command is as follows:
                                                                                                                    select corr(items,price) from warehouse; 
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    _c0        
+1.242355   
                                                                                                                    
+
                                                                                                                  • When used with group by, it groups all offerings by warehouse (warehourseId) and returns the correlation coefficient between the inventory (items) and the price of offerings within each group. An example command is as follows:
                                                                                                                    select warehourseId, corr(items,price) from warehourse group by warehourseId; 
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    warehouseId _c1        
+city1   0.43124   
+city2   0.53344   
+city3   0.73425   
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Aggregate Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_cos.html b/docs/dli/sqlreference/dli_spark_cos.html
new file mode 100644
index 00000000..f7c505a9
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_cos.html
@@ -0,0 +1,47 @@
+
+
+
                                                                                                                  cos
                                                                                                                  
+
                                                                                                                  This function is used to calculate the cosine value of a, with input in radians.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  cos(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value -0.99999999999999999986 is returned.
                                                                                                                  
+
                                                                                                                  select cos(3.1415926);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select cos(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_cot1.html b/docs/dli/sqlreference/dli_spark_cot1.html
new file mode 100644
index 00000000..26a52086
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_cot1.html
@@ -0,0 +1,47 @@
+
+
+
                                                                                                                  cot1
                                                                                                                  
+
                                                                                                                  This function is used to calculate the cotangent value of a, with input in radians.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  cot1(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE or DECIMAL type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 1.0000000000000002 is returned.
                                                                                                                  
+
                                                                                                                  select cot1(pi()/4);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select cot1(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_count.html b/docs/dli/sqlreference/dli_spark_count.html
new file mode 100644
index 00000000..7f1bf15a
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_count.html
@@ -0,0 +1,63 @@
+
+
+
                                                                                                                  count
                                                                                                                  
+
                                                                                                                  This function is used to return the number of records.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  count([distinct|all] <colname>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  distinct or all
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Determines whether duplicate records should be excluded during counting. all is used by default, indicating that all records will be included in the count.
                                                                                                                  
+
                                                                                                                  If distinct is specified, only the number of unique values is counted.
                                                                                                                  
+
                                                                                                                  colname
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  The column value can be of any type.
                                                                                                                  
+
                                                                                                                  The value can be *, that is, count(*), indicating that the number of all rows is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of colname is NULL, the row is not involved in calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Calculates the total number of records in the warehouse table. An example command is as follows:
                                                                                                                    select count(*) from warehouse;
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    _c0        
+10         
                                                                                                                    
+
                                                                                                                  • When used with group by, it groups all offerings by warehouse (warehouseId) and calculates the number of offerings in each warehouse (warehouseId). An example command is as follows:
                                                                                                                    select warehouseId, count(*) from warehouse group by warehouseId;
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    warehouseId _c1        
+city1   6          
+city2   5          
+city3   6          
                                                                                                                    
+
                                                                                                                    Example 3: Calculates the number of warehouses through distinct deduplication. An example command is as follows:
                                                                                                                    
+
                                                                                                                    select count(distinct warehouseId) from warehouse;
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    _c0        
+ 3          
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Aggregate Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_covar_pop.html b/docs/dli/sqlreference/dli_spark_covar_pop.html
new file mode 100644
index 00000000..24fd7a83
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_covar_pop.html
@@ -0,0 +1,54 @@
+
+
+
                                                                                                                  covar_pop
                                                                                                                  
+
                                                                                                                  This function is used to return the covariance between two columns of numerical values.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  covar_pop(col1, col2)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  col1
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Columns with a data type of numeric. If the values are of any other type, NULL is returned.
                                                                                                                  
+
                                                                                                                  col2
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Columns with a data type of numeric. If the values are of any other type, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Calculates the covariance between the inventory (items) and the price of all offerings. An example command is as follows:
                                                                                                                    select covar_pop(items, price) from warehouse;
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    _c0        
+1.242355   
                                                                                                                    
+
                                                                                                                  • When used with group by, it groups all offerings by warehouse (warehourseId) and returns the covariance between the inventory (items) and the price of offerings within each group. An example command is as follows:
                                                                                                                    select warehourseId, covar_pop(items, price) from warehourse group by warehourseId;
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    warehouseId _c1        
+city1    1.13124   
+city2    1.13344   
+city3    1.53425   
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Aggregate Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_covar_samp.html b/docs/dli/sqlreference/dli_spark_covar_samp.html
new file mode 100644
index 00000000..1343b1c0
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_covar_samp.html
@@ -0,0 +1,54 @@
+
+
+
                                                                                                                  covar_samp
                                                                                                                  
+
                                                                                                                  This function is used to return the sample covariance between two columns of numerical values.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  covar_samp(col1, col2)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  col1
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Columns with a data type of numeric. If the values are of any other type, NULL is returned.
                                                                                                                  
+
                                                                                                                  col2
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Columns with a data type of numeric. If the values are of any other type, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Calculates the sample covariance between the inventory (items) and the price of all offerings. An example command is as follows:
                                                                                                                    select covar_samp(items,price) from warehouse; 
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    _c0        
+1.242355   
                                                                                                                    
+
                                                                                                                  • When used with group by, it groups all offerings by warehouse (warehourseId) and returns the sample covariance between the inventory (items) and the price of offerings within each group. An example command is as follows:
                                                                                                                    select warehourseId, covar_samp(items,price) from warehourse group by warehourseId; 
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    warehouseId _c1        
+city1    1.03124   
+city2    1.03344   
+city3    1.33425   
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Aggregate Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_cume_dist.html b/docs/dli/sqlreference/dli_spark_cume_dist.html
new file mode 100644
index 00000000..5e6ac521
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_cume_dist.html
@@ -0,0 +1,98 @@
+
+
+
                                                                                                                  cume_dist
                                                                                                                  
+
                                                                                                                  This function is used to return the cumulative distribution, which is equivalent to calculating the proportion of data in the partition that is greater than or equal to, or less than or equal to, the current row.
                                                                                                                  
+
                                                                                                                  Restrictions
                                                                                                                  The restrictions on using window functions are as follows:
                                                                                                                  
+
                                                                                                                  • Window functions can be used only in select statements.
                                                                                                                  • Window functions and aggregate functions cannot be nested in window functions.
                                                                                                                  • Window functions cannot be used together with aggregate functions of the same level.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  cume_dist() over([partition_clause] [orderby_clause])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  partition_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Partition. Rows with the same value in partition columns are considered to be in the same window.
                                                                                                                  
+
                                                                                                                  orderby_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  How data is sorted in a window
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  To help you understand how to use functions, this example provides source data and function examples based on the source data. Run the following command to create the salary table and add data:
                                                                                                                  CREATE EXTERNAL TABLE salary (
+dept STRING, -- Department name
+userid string, -- Employee ID
+sal INT -- Salary
+) ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' 
+stored as textfile;
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Adds the following data:
                                                                                                                  
+
                                                                                                                  d1,user1,1000
+d1,user2,2000
+d1,user3,3000
+d2,user4,4000
+d2,user5,5000
                                                                                                                  
+
                                                                                                                  • Calculates the proportion of employees whose salary is less than or equal to the current salary.
                                                                                                                    select dept, userid, sal,
+       cume_dist() over(order by sal) as cume1
+from salary;
+-- Result:
+d1 user1 1000 0.2
+d1 user2 2000 0.4
+d1 user3 3000 0.6
+d2 user4 4000 0.8
+d2 user5 5000 1.0
                                                                                                                    
+
                                                                                                                  • Calculates the proportion of employees whose salary is less than or equal to the current salary by department.
                                                                                                                    select dept, userid, sal,
+       cume_dist() over (partition by dept order by sal) as cume2
+from salary;
+-- Result:
+d1 user1 1000 0.3333333333333333
+d1 user2 2000 0.6666666666666666
+d1 user3 3000 1.0
+d2 user4 4000 0.5
+d2 user5 5000 1.0
                                                                                                                    
+
                                                                                                                  • After sorting by sal in descending order, the result is the ratio of employees whose salary is greater than or equal to the current salary.
                                                                                                                    select dept, userid, sal,
+       cume_dist() over(order by sal desc) as cume3
+from salary;
+-- Result:
+d2 user5 5000 0.2
+d2 user4 4000 0.4
+d1 user3 3000 0.6
+d1 user2 2000 0.8
+d1 user1 1000 1.0
+select dept, userid, sal,
+       cume_dist() over(partition by dept order by sal desc) as cume4
+from salary;
+-- Result:
+d1 user3 3000 0.3333333333333333
+d1 user2 2000 0.6666666666666666
+d1 user1 1000 1.0
+d2 user5 5000 0.5
+d2 user4 4000 1.0
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Window Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_current_date.html b/docs/dli/sqlreference/dli_spark_current_date.html
new file mode 100644
index 00000000..b3a36932
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_current_date.html
@@ -0,0 +1,21 @@
+
+
+
                                                                                                                  current_date
                                                                                                                  
+
                                                                                                                  This function is used to return the current date, in the yyyy-mm-dd format.
                                                                                                                  
+
                                                                                                                  Similar function: getdate. The getdate function is used to return the current system time, in the yyyy-mm-dd hh:mi:ss format.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  current_date()
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  None
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DATE type, in the yyyy-mm-dd format.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2023-08-16 is returned.
                                                                                                                  
+
                                                                                                                  select current_date();
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_current_timestamp.html b/docs/dli/sqlreference/dli_spark_current_timestamp.html
new file mode 100644
index 00000000..d0abc847
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_current_timestamp.html
@@ -0,0 +1,20 @@
+
+
+
                                                                                                                  current_timestamp
                                                                                                                  
+
                                                                                                                  This function is used to return the current timestamp.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  current_timestamp()
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  None
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the TIMESTAMP type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 1692002816300 is returned.
                                                                                                                  
+
                                                                                                                  select current_timestamp();
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_date_add.html b/docs/dli/sqlreference/dli_spark_date_add.html
new file mode 100644
index 00000000..cbe296c3
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_date_add.html
@@ -0,0 +1,68 @@
+
+
+
                                                                                                                  date_add
                                                                                                                  
+
                                                                                                                  This function is used to calculate the number of days in which start_date is increased by days.
                                                                                                                  
+
                                                                                                                  To obtain the date with a specified change range based on the current date, use this function together with the current_date or getdate function.
                                                                                                                  
+
                                                                                                                  Note that the logic of this function is opposite to that of the date_sub function.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  date_add(string startdate, int days)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  start_date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Start date
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  days
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Number of days to be added
                                                                                                                  
+
                                                                                                                  • If the value is greater than 0, the number of days is increased.
                                                                                                                  • If the value is less than 0, the number of days is subtracted.
                                                                                                                  • If the value is 0, the date does not change.
                                                                                                                  • If the value is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DATE type, in the yyyy-mm-dd format.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of start_date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of start_date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of start_date is NULL, NULL is returned.
                                                                                                                  • If the value of days is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2023-03-01 is returned after one day is added.
                                                                                                                  
+
                                                                                                                  select date_add('2023-02-28 00:00:00', 1);
                                                                                                                  
+
                                                                                                                  The value 2023-02-27 is returned after one day is subtracted.
                                                                                                                  
+
                                                                                                                  select date_add(date '2023-02-28', -1);
                                                                                                                  
+
                                                                                                                  The value 2023-03-20 is returned.
                                                                                                                  
+
                                                                                                                  select date_add('2023-02-28 00:00:00', 20);
                                                                                                                  
+
                                                                                                                  If the current time is 2023-08-14 16:00:00, 2023-08-13 is returned.
                                                                                                                  
+
                                                                                                                  select date_add(getdate(),-1);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select date_add('2023-02-28 00:00:00', null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_date_format.html b/docs/dli/sqlreference/dli_spark_date_format.html
new file mode 100644
index 00000000..d9ff497a
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_date_format.html
@@ -0,0 +1,66 @@
+
+
+
                                                                                                                  date_format
                                                                                                                  
+
                                                                                                                  This function is used to convert a date into a string based on the format specified by format.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  date_format(string date, string format)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Date to be converted
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  format
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Format, based on which the date is converted
                                                                                                                  
+
                                                                                                                  The value is a combination of the time unit (year, month, day, hour, minute, and second) and any character.
                                                                                                                  
+
                                                                                                                  • YYYY or yyyy indicates the year.
                                                                                                                  • MM indicates the month.
                                                                                                                  • mm indicates the minute.
                                                                                                                  • dd indicates the day.
                                                                                                                  • HH indicates the 24-hour clock.
                                                                                                                  • hh indicates the 12-hour clock.
                                                                                                                  • mi indicates the minute.
                                                                                                                  • ss indicates the second.
                                                                                                                  • SSS indicates millisecond.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date is NULL, NULL is returned.
                                                                                                                  • If the value of format is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  Assume that the current time is 2023-08-14 16:59.
                                                                                                                  
+
                                                                                                                  The value 2023-08-14 04:59:15.997 is returned.
                                                                                                                  
+
                                                                                                                  select date_format(from_utc_timestamp(getdate(), 'UTC'),'yyyy-MM-dd hh:mm:ss.SSS');
                                                                                                                  
+
                                                                                                                  The value 2023-08-14 is returned.
                                                                                                                  
+
                                                                                                                  select date_format('2023-08-14','yyyy-MM-dd');
                                                                                                                  
+
                                                                                                                  The value 2023-08 is returned.
                                                                                                                  
+
                                                                                                                  select date_format('2023-08-14','yyyy-MM')
                                                                                                                  
+
                                                                                                                  The value 20230814 is returned.
                                                                                                                  
+
                                                                                                                  select date_format('2023-08-14','yyyyMMdd')
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_date_sub.html b/docs/dli/sqlreference/dli_spark_date_sub.html
new file mode 100644
index 00000000..a836a548
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_date_sub.html
@@ -0,0 +1,66 @@
+
+
+
                                                                                                                  date_sub
                                                                                                                  
+
                                                                                                                  This function is used to calculate the number of days in which start_date is subtracted by days.
                                                                                                                  
+
                                                                                                                  To obtain the date with a specified change range based on the current date, use this function together with the current_date or getdate function.
                                                                                                                  
+
                                                                                                                  Note that the logic of this function is opposite to that of the date_add function.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  date_sub(string startdate, int days)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  start_date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Start date
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  days
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Number of days to be reduced
                                                                                                                  
+
                                                                                                                  • If the value is greater than 0, the number of days is increased.
                                                                                                                  • If the value of days is less than 0, the number of days is subtracted.
                                                                                                                  • If the value is 0, the date does not change.
                                                                                                                  • If the value is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DATE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of start_date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of start_date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date is NULL, NULL is returned.
                                                                                                                  • If the value of format is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2023-08-12 is returned after two days are subtracted.
                                                                                                                  
+
                                                                                                                  select date_sub('2023-08-14 17:00:00', 2);
                                                                                                                  
+
                                                                                                                  The value 2023-08-15 is returned after one day is added.
                                                                                                                  
+
                                                                                                                  select date_sub(date'2023-08-14', -1);
                                                                                                                  
+
                                                                                                                  If the current time is 2023-08-14 17:00:00, 2022-08-13 is returned.
                                                                                                                  
+
                                                                                                                  select date_sub(getdate(),1);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select date_sub('2023-08-14 17:00:00', null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_dateadd.html b/docs/dli/sqlreference/dli_spark_dateadd.html
new file mode 100644
index 00000000..20f5c8da
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_dateadd.html
@@ -0,0 +1,79 @@
+
+
+
                                                                                                                  dateadd
                                                                                                                  
+
                                                                                                                  This function is used to change a date based on datepart and delta.
                                                                                                                  
+
                                                                                                                  To obtain the date with a specified change range based on the current date, use this function together with the current_date or getdate function.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  dateadd(string date, bigint delta, string datepart)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Start date
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  delta
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Amplitude, based on which the date is modified
                                                                                                                  
+
                                                                                                                  datepart
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Unit, based on which the date is modified
                                                                                                                  
+
                                                                                                                  This parameter supports the following extended date formats: year, month or mon, day, and hour.
                                                                                                                  
+
                                                                                                                  • YYYY or yyyy indicates the year.
                                                                                                                  • MM indicates the month.
                                                                                                                  • mm indicates the minute.
                                                                                                                  • dd indicates the day.
                                                                                                                  • HH indicates the 24-hour clock.
                                                                                                                  • hh indicates the 12-hour clock.
                                                                                                                  • mi indicates the minute.
                                                                                                                  • ss indicates the second.
                                                                                                                  • SSS indicates the millisecond.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date is NULL, NULL is returned.
                                                                                                                  • If the value of delta or datepart is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2023-08-15 17:00:00 is returned after one day is added.
                                                                                                                  
+
                                                                                                                  select dateadd( '2023-08-14 17:00:00', 1, 'dd');
                                                                                                                  
+
                                                                                                                  The value 2025-04-14 17:00:00 is returned after 20 months are added.
                                                                                                                  
+
                                                                                                                  select dateadd('2023-08-14 17:00:00', 20, 'mm');
                                                                                                                  
+
                                                                                                                  The value 2023-09-14 17:00:00 is returned.
                                                                                                                  
+
                                                                                                                  select dateadd('2023-08-14 17:00:00', 1, 'mm');
                                                                                                                  
+
                                                                                                                  The value 2023-09-14 is returned.
                                                                                                                  
+
                                                                                                                  select dateadd('2023-08-14', 1, 'mm');
                                                                                                                  
+
                                                                                                                  If the current time is 2023-08-14 17:00:00, 2023-08-13 17:00:00 is returned.
                                                                                                                  
+
                                                                                                                  select dateadd(getdate(),-1,'dd');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select dateadd(date '2023-08-14', 1, null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_datediff.html b/docs/dli/sqlreference/dli_spark_datediff.html
new file mode 100644
index 00000000..d492346f
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_datediff.html
@@ -0,0 +1,66 @@
+
+
+
                                                                                                                  datediff
                                                                                                                  
+
                                                                                                                  This function is used to calculate the difference between date1 and date2.
                                                                                                                  
+
                                                                                                                  Similar function: datediff1. The datediff1 function is used to calculate the difference between date1 and date2 and return the difference in a specified datepart.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  datediff(string date1, string date2)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date1
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Minuend of the date difference between date1 and date2.
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  date2
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Subtrahend of the date difference between date1 and date2.
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the values of date1 and date2 are not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the values of date1 and date2 are of the DATE or STRING type but are not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date1 is smaller than that of date2, the return value is a negative number.
                                                                                                                  • If the value of date1 or date2 is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 10 is returned.
                                                                                                                  
+
                                                                                                                  select datediff('2023-06-30 00:00:00', '2023-06-20 00:00:00');
                                                                                                                  
+
                                                                                                                  The value 11 is returned.
                                                                                                                  
+
                                                                                                                  select datediff(date '2023-05-21', date '2023-05-10');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select datediff(date '2023-05-21', null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_datediff1.html b/docs/dli/sqlreference/dli_spark_datediff1.html
new file mode 100644
index 00000000..73c2f1d8
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_datediff1.html
@@ -0,0 +1,79 @@
+
+
+
                                                                                                                  datediff1
                                                                                                                  
+
                                                                                                                  This function is used to calculate the difference between date1 and date2 and return the difference in a specified datepart.
                                                                                                                  
+
                                                                                                                  Similar function: datediff. The datediff function is used to calculate the difference between date1 and date2 but does not return the difference in a specified datepart.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  datediff1(string date1, string date2, string datepart)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date1
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Minuend of the date difference between date1 and date2.
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  date2
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Subtrahend of the date difference between date1 and date2.
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  datepart
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Unit of the time to be returned
                                                                                                                  
+
                                                                                                                  This parameter supports the following extended date formats: year, month or mon, day, and hour.
                                                                                                                  
+
                                                                                                                  • YYYY or yyyy indicates the year.
                                                                                                                  • MM indicates the month.
                                                                                                                  • mm indicates the minute.
                                                                                                                  • dd indicates the day.
                                                                                                                  • HH indicates the 24-hour clock.
                                                                                                                  • hh indicates the 12-hour clock.
                                                                                                                  • mi indicates the minute.
                                                                                                                  • ss indicates the second.
                                                                                                                  • SSS indicates millisecond.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the values of date1 and date2 are not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the values of date1 and date2 are of the DATE or STRING type but are not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date1 is smaller than that of date2, the return value is a negative number.
                                                                                                                  • If the value of date1 or date2 is NULL, NULL is returned.
                                                                                                                  • If the value of datepart is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 14400 is returned.
                                                                                                                  
+
                                                                                                                  select datediff1('2023-06-30 00:00:00', '2023-06-20 00:00:00', 'mi');
                                                                                                                  
+
                                                                                                                  The value 10 is returned.
                                                                                                                  
+
                                                                                                                  select datediff1(date '2023-06-21', date '2023-06-11', 'dd');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select datediff1(date '2023-05-21', date '2023-05-10', null);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select datediff1(date '2023-05-21', null, 'dd');
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_datepart.html b/docs/dli/sqlreference/dli_spark_datepart.html
new file mode 100644
index 00000000..40fda256
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_datepart.html
@@ -0,0 +1,65 @@
+
+
+
                                                                                                                  datepart
                                                                                                                  
+
                                                                                                                  This function is used to calculate the value that meets the specified datepart in date.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  datepart (string date, string datepart)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Start date
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  datepart
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Time unit of the value to be returned
                                                                                                                  
+
                                                                                                                  This parameter supports the following extended date formats: year, month or mon, day, and hour.
                                                                                                                  
+
                                                                                                                  • YYYY or yyyy indicates the year.
                                                                                                                  • MM indicates the month.
                                                                                                                  • mm indicates the minute.
                                                                                                                  • dd indicates the day.
                                                                                                                  • HH indicates the 24-hour clock.
                                                                                                                  • hh indicates the 12-hour clock.
                                                                                                                  • mi indicates the minute.
                                                                                                                  • ss indicates the second.
                                                                                                                  • SSS indicates millisecond.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of datepart is NULL, NULL is returned.
                                                                                                                  • If the value of datepart is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2023 is returned.
                                                                                                                  
+
                                                                                                                  select datepart(date '2023-08-14 17:00:00', 'yyyy');
                                                                                                                  
+
                                                                                                                  The value 2023 is returned.
                                                                                                                  
+
                                                                                                                  select datepart('2023-08-14 17:00:00', 'yyyy');
                                                                                                                  
+
                                                                                                                  The value 0 is returned.
                                                                                                                  
+
                                                                                                                  select datepart(date '2023-08-14 17:00:00', 'mi');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select datepart(date '2023-08-14', null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_datetrunc.html b/docs/dli/sqlreference/dli_spark_datetrunc.html
new file mode 100644
index 00000000..c5eb5eb7
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_datetrunc.html
@@ -0,0 +1,71 @@
+
+
+
                                                                                                                  datetrunc
                                                                                                                  
+
                                                                                                                  This function is used to calculate the date otained through the truncation of a specified date based on a specified datepart.
                                                                                                                  
+
                                                                                                                  It truncates the date before the specified datepart and automatically fills the remaining part with the default value. For details, see Example Code.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  datetrunc (string date, string datepart)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Start date
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  datepart
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Time unit of the value to be returned
                                                                                                                  
+
                                                                                                                  This parameter supports the following extended date formats: year, month or mon, day, and hour.
                                                                                                                  
+
                                                                                                                  • YYYY or yyyy indicates the year.
                                                                                                                  • MM indicates the month.
                                                                                                                  • mm indicates the minute.
                                                                                                                  • dd indicates the day.
                                                                                                                  • HH indicates the 24-hour clock.
                                                                                                                  • hh indicates the 12-hour clock.
                                                                                                                  • mi indicates the minute.
                                                                                                                  • ss indicates the second.
                                                                                                                  • SSS indicates millisecond.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DATE or STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of datepart is NULL, NULL is returned.
                                                                                                                  • If the value of datepart is hour, minute, or second, the date is truncated to the day and returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  Example static data
                                                                                                                  
+
                                                                                                                  The value 2023-01-01 00:00:00 is returned.
                                                                                                                  
+
                                                                                                                  select datetrunc('2023-08-14 17:00:00', 'yyyy');
                                                                                                                  
+
                                                                                                                  The value 2023-08-01 00:00:00 is returned.
                                                                                                                  
+
                                                                                                                  select datetrunc('2023-08-14 17:00:00', 'month');
                                                                                                                  
+
                                                                                                                  The value 2023-08-14 is returned.
                                                                                                                  
+
                                                                                                                  select datetrunc('2023-08-14 17:00:00', 'DD');
                                                                                                                  
+
                                                                                                                  The value 2023-01-01 is returned.
                                                                                                                  
+
                                                                                                                  select datetrunc('2023-08-14', 'yyyy');
                                                                                                                  
+
                                                                                                                  The value 2023-08-14 is returned.
                                                                                                                  
+
                                                                                                                  select datetrunc('2023-08-14 17:00:00', 'HH');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select datetrunc('2023-08-14', null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_daydayofmonth.html b/docs/dli/sqlreference/dli_spark_daydayofmonth.html
new file mode 100644
index 00000000..aaedf51d
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_daydayofmonth.html
@@ -0,0 +1,52 @@
+
+
+
                                                                                                                  day/dayofmonth
                                                                                                                  
+
                                                                                                                  This function is used to return the day of a specified date.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  day(string date), dayofmonth(string date)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Date that needs to be processed
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 1 is returned.
                                                                                                                  
+
                                                                                                                  select day('2023-08-01');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select day('20230816');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select day(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_decode1.html b/docs/dli/sqlreference/dli_spark_decode1.html
new file mode 100644
index 00000000..ce57d892
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_decode1.html
@@ -0,0 +1,93 @@
+
+
+
                                                                                                                  decode1
                                                                                                                  
+
                                                                                                                  This function is used to implement if-then-else branch selection.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  decode1(<expression>, <search>, <result>[, <search>, <result>]...[, <default>])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  expression
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  All data types
                                                                                                                  
+
                                                                                                                  Expression to be compared
                                                                                                                  
+
                                                                                                                  search
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Same as that of expression
                                                                                                                  
+
                                                                                                                  Search item to be compared with expression
                                                                                                                  
+
                                                                                                                  result
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  All data types
                                                                                                                  
+
                                                                                                                  Return value when the values of search and expression match
                                                                                                                  
+
                                                                                                                  default
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Same as that of result
                                                                                                                  
+
                                                                                                                  If all search items do not match, the value of this parameter is returned. If no search item is specified, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  result and default are return values. These values can be of any data type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If they match, the value of result is returned.
                                                                                                                  • If no match is found, the value of default is returned.
                                                                                                                  • If default is not specified, NULL is returned.
                                                                                                                  • If the search options are duplicate and matched, the first value is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  To help you understand how to use functions, this example provides source data and function examples based on the source data. Run the following command to create the salary table and add data:
                                                                                                                  CREATE EXTERNAL TABLE salary (
+dept_id STRING, -- Department
+userid string, -- Employee ID
+sal INT
+) ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' 
+stored as textfile;
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Adds the following data:
                                                                                                                  
+
                                                                                                                  d1,user1,1000
+d1,user2,2000
+d1,user3,3000
+d2,user4,4000
+d2,user5,5000
                                                                                                                  
+
                                                                                                                  Example
                                                                                                                  
+
                                                                                                                  Returns the name of each department.
                                                                                                                  
+
                                                                                                                  If dept_id is set to d1, DLI is returned. If it is set to d2, MRS is returned. In other scenarios, Others is returned.
                                                                                                                  
+
                                                                                                                  select dept, decode1(dept, 'd1', 'DLI', 'd2', 'MRS', 'Others') as result from sale_detail;
                                                                                                                  
+
                                                                                                                  Returned result:
                                                                                                                  
+
                                                                                                                  d1 DLI
+d2 MRS
+d3 Others
+d4 Others
+d5 Others
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Other Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_degress.html b/docs/dli/sqlreference/dli_spark_degress.html
new file mode 100644
index 00000000..ae5097b7
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_degress.html
@@ -0,0 +1,49 @@
+
+
+
                                                                                                                  degrees
                                                                                                                  
+
                                                                                                                  This function is used to calculate the angle corresponding to the returned radian.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  degrees(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 90.0 is returned.
                                                                                                                  
+
                                                                                                                  select degrees(1.5707963267948966);
                                                                                                                  
+
                                                                                                                  The value 0 is returned.
                                                                                                                  
+
                                                                                                                  select degrees(0);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select degrees(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_e.html b/docs/dli/sqlreference/dli_spark_e.html
new file mode 100644
index 00000000..b37ba0bc
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_e.html
@@ -0,0 +1,18 @@
+
+
+
                                                                                                                  e
                                                                                                                  
+
                                                                                                                  This function is used to return the value of e.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  e()
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2.718281828459045 is returned.
                                                                                                                  select e();
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_encode.html b/docs/dli/sqlreference/dli_spark_encode.html
new file mode 100644
index 00000000..84044631
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_encode.html
@@ -0,0 +1,58 @@
+
+
+
                                                                                                                  encode
                                                                                                                  
+
                                                                                                                  This function is used to encode str in charset format.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  encode(string <str>, string <charset>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  At least two strings must be specified.
                                                                                                                  
+
                                                                                                                  The value is of the STRING type. If the value is of the BIGINT, DECIMAL, DOUBLE, or DATETIME type, the value is implicitly converted to the STRING type for calculation.
                                                                                                                  
+
                                                                                                                  charset
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Encoding format.
                                                                                                                  
+
                                                                                                                  The options are UTF-8, UTF-16, UTF-16LE, UTF-16BE, ISO-8859-1, and US-ASCII.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BINARY type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of str or charset is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Encodes string abc in UTF-8 format. An example command is as follows:
                                                                                                                    The value abc is returned.
                                                                                                                    select encode("abc", "UTF-8");
                                                                                                                    
+
                                                                                                                    
+
                                                                                                                  • The value of any input parameter is NULL. An example command is as follows:
                                                                                                                    The return value is NULL.
                                                                                                                    
+
                                                                                                                    select encode("abc", null);
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_exp.html b/docs/dli/sqlreference/dli_spark_exp.html
new file mode 100644
index 00000000..6bb47b9f
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_exp.html
@@ -0,0 +1,49 @@
+
+
+
                                                                                                                  exp
                                                                                                                  
+
                                                                                                                  This function is used to return the value of e raised to the power of a.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  exp(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 7.38905609893065 is returned.
                                                                                                                  
+
                                                                                                                  select exp(2);
                                                                                                                  
+
                                                                                                                  The value 20.085536923187668 is returned.
                                                                                                                  
+
                                                                                                                  select exp(3);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select exp(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_factorial.html b/docs/dli/sqlreference/dli_spark_factorial.html
new file mode 100644
index 00000000..d93c0481
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_factorial.html
@@ -0,0 +1,54 @@
+
+
+
                                                                                                                  factorial
                                                                                                                  
+
                                                                                                                  This function is used to return the factorial of a.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  factorial(INT a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  BIGINT, INT, SMALLINT, or TINYINT
                                                                                                                  
+
                                                                                                                  The value is an integer.
                                                                                                                  
+
                                                                                                                  If the value is not of the INT type, the system will implicitly convert it to the INT type for calculation.
                                                                                                                  
+
                                                                                                                  The string is converted to its corresponding ASCII code.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of a is 0, 1 is returned.
                                                                                                                  • If the value of a is NULL or outside the range of [0,20], NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 720 is returned.
                                                                                                                  
+
                                                                                                                  select factorial(6);
                                                                                                                  
+
                                                                                                                  The value 1 is returned.
                                                                                                                  
+
                                                                                                                  select factorial(1);
                                                                                                                  
+
                                                                                                                  The value 120 is returned.
                                                                                                                  
+
                                                                                                                  select factorial(5.123456);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select factorial(null);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select factorial(21);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_find_in_set.html b/docs/dli/sqlreference/dli_spark_find_in_set.html
new file mode 100644
index 00000000..e38d523d
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_find_in_set.html
@@ -0,0 +1,58 @@
+
+
+
                                                                                                                  find_in_set
                                                                                                                  
+
                                                                                                                  This function is used to return the position (stating from 1) of str1 in str2 separated by commas (,).
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  find_in_set(string <str1>, string <str2>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str1
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be searched for
                                                                                                                  
+
                                                                                                                  str2
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String separated by a comma (,)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If str1 cannot be matched in str2 or str1 contains commas (,), 0 is returned.
                                                                                                                  • If the value of str1 or str2 is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Search for the position of string ab in string abc,123,ab,c. An example command is as follows:
                                                                                                                    The value 3 is returned.
                                                                                                                    
+
                                                                                                                    select find_in_set('ab', 'abc,123,ab,c');
                                                                                                                    
+
                                                                                                                  • Search for the position of string hi in string abc,123,ab,c. An example command is as follows:
                                                                                                                    The value 0 is returned.
                                                                                                                    
+
                                                                                                                    select find_in_set('hi', 'abc,123,ab,c');
                                                                                                                    
+
                                                                                                                  • The value of any input parameter is NULL. An example command is as follows:
                                                                                                                    The value NULL is returned.
                                                                                                                    
+
                                                                                                                    select find_in_set(null, 'abc,123,ab,c');
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_first_value.html b/docs/dli/sqlreference/dli_spark_first_value.html
new file mode 100644
index 00000000..d7301ee3
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_first_value.html
@@ -0,0 +1,112 @@
+
+
+
                                                                                                                  first_value
                                                                                                                  
+
                                                                                                                  This function is used to obtain the value of the first data record in the window corresponding to the current row.
                                                                                                                  
+
                                                                                                                  Restrictions
                                                                                                                  The restrictions on using window functions are as follows:
                                                                                                                  
+
                                                                                                                  • Window functions can be used only in select statements.
                                                                                                                  • Window functions and aggregate functions cannot be nested in window functions.
                                                                                                                  • Window functions cannot be used together with aggregate functions of the same level.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  first_value(<expr>[, <ignore_nulls>]) over ([partition_clause] [orderby_clause] [frame_clause])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  expr
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Expression whose return result is to be calculated
                                                                                                                  
+
                                                                                                                  ignore_nulls
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  The value is of the BOOLEAN type, indicating whether to ignore NULL values. The default value is False.
                                                                                                                  
+
                                                                                                                  If the value is True, the first non-null value in the window is returned.
                                                                                                                  
+
                                                                                                                  partition_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Partition. Rows with the same value in partition columns are considered to be in the same window.
                                                                                                                  
+
                                                                                                                  orderby_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  It is used to specify how data is sorted in a window.
                                                                                                                  
+
                                                                                                                  frame_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  It is used to determine the data boundary.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the data type of the parameter.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  Example data
                                                                                                                  
+
                                                                                                                  To help you understand how to use functions, this example provides source data and function examples based on the source data. Run the following command to create the logs table and add data:
                                                                                                                  create table logs(
+ cookieid string,
+ createtime string,
+ url string
+) 
+STORED AS parquet;
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Adds the following data:
                                                                                                                  
+
                                                                                                                  cookie1 2015-04-10 10:00:02 url2
+cookie1 2015-04-10 10:00:00 url1
+cookie1 2015-04-10 10:03:04 url3
+cookie1 2015-04-10 10:50:05 url6
+cookie1 2015-04-10 11:00:00 url7
+cookie1 2015-04-10 10:10:00 url4
+cookie1 2015-04-10 10:50:01 url5
+cookie2 2015-04-10 10:00:02 url22
+cookie2 2015-04-10 10:00:00 url11
+cookie2 2015-04-10 10:03:04 url33
+cookie2 2015-04-10 10:50:05 url66
+cookie2 2015-04-10 11:00:00 url77
+cookie2 2015-04-10 10:10:00 url44
+cookie2 2015-04-10 10:50:01 url55
                                                                                                                  
+
                                                                                                                  Example: Groups all records by cookieid, sorts the records by createtime in ascending order, and returns the first row of data in each group. An example command is as follows:
                                                                                                                  
+
                                                                                                                  SELECT cookieid, createtime, url,
+       FIRST_VALUE(url) OVER (PARTITION BY cookieid ORDER BY createtime) AS first
+FROM logs;
+
+The command output is as follows:
+cookieid createtime         url  first
+cookie1 2015-04-10 10:00:00 url1 url1
+cookie1 2015-04-10 10:00:02 url2 url1
+cookie1 2015-04-10 10:03:04 url3 url1
+cookie1 2015-04-10 10:10:00 url4 url1
+cookie1 2015-04-10 10:50:01 url5 url1
+cookie1 2015-04-10 10:50:05 url6 url1
+cookie1 2015-04-10 11:00:00 url7 url1
+cookie2 2015-04-10 10:00:00 url11 url11
+cookie2 2015-04-10 10:00:02 url22 url11
+cookie2 2015-04-10 10:03:04 url33 url11
+cookie2 2015-04-10 10:10:00 url44 url11
+cookie2 2015-04-10 10:50:01 url55 url11
+cookie2 2015-04-10 10:50:05 url66 url11
+cookie2 2015-04-10 11:00:00 url77 url11
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Window Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_floor.html b/docs/dli/sqlreference/dli_spark_floor.html
new file mode 100644
index 00000000..6212c98c
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_floor.html
@@ -0,0 +1,49 @@
+
+
+
                                                                                                                  floor
                                                                                                                  
+
                                                                                                                  This function is used to round down a to the nearest integer.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  floor(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 1 is returned.
                                                                                                                  
+
                                                                                                                  select floor(1.2);
                                                                                                                  
+
                                                                                                                  The value -2 is returned.
                                                                                                                  
+
                                                                                                                  select floor(-1.2);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select floor(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_from_unixtime.html b/docs/dli/sqlreference/dli_spark_from_unixtime.html
new file mode 100644
index 00000000..8cabed64
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_from_unixtime.html
@@ -0,0 +1,59 @@
+
+
+
                                                                                                                  from_unixtime
                                                                                                                  
+
                                                                                                                  This function is used to convert a timestamp represented by a numeric UNIX value to a date value.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  from_unixtime(bigint unixtime)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  unixtime
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Timestamp to be converted, in UNIX format
                                                                                                                  
+
                                                                                                                  Set this parameter to the first 10 digits of the timestamp in UNIX format.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type, in the yyyy-mm-dd hh:mi:ss format.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of unixtime is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2023-08-16 09:39:57 is returned.
                                                                                                                  
+
                                                                                                                  select from_unixtime(1692149997);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select from_unixtime(NULL);
                                                                                                                  
+
                                                                                                                  Example table data
                                                                                                                  select unixdate, from_unixtime(unixdate) as timestamp_from_unixtime from database_t;
+Output:
++------------------+------------------------------+
+| unixdate              | timestamp_from_unixtime   |
++------------------+------------------------------+
+| 1690944759224  | 2023-08-02 10:52:39           |
+| 1690944999811  | 2023-08-02 10:56:39           |
+| 1690945005458  | 2023-08-02 10:56:45           |
+| 1690945011542  | 2023-08-02 10:56:51           |
+| 1690945023151  | 2023-08-02 10:57:03           |
++------------------+------------------------------+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_from_utc_timestamp.html b/docs/dli/sqlreference/dli_spark_from_utc_timestamp.html
new file mode 100644
index 00000000..98ec38c6
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_from_utc_timestamp.html
@@ -0,0 +1,67 @@
+
+
+
                                                                                                                  from_utc_timestamp
                                                                                                                  
+
                                                                                                                  This function is used to convert a UTC timestamp to a UNIX timestamp in a given time zone.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  from_utc_timestamp(string timestamp, string timezone)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  timestamp
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  TINYINT
                                                                                                                  
+
                                                                                                                  SMALLINT
                                                                                                                  
+
                                                                                                                  INT
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Time to be converted
                                                                                                                  
+
                                                                                                                  Date value of the DATE or STRING type, or timestamp of the TINYINT, SMALLINT, INT, or BIGINT type.
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  yyyy-mm-dd
                                                                                                                  
+
                                                                                                                  yyyy-mm-dd hh:mi:ss
                                                                                                                  
+
                                                                                                                  yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  timezone
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Time zone where the time to be converted belongs
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the TIMESTAMP type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of timestamp is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of timestamp is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of timestamp is NULL, NULL is returned.
                                                                                                                  • If the value of timezone is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 1691978400000 is returned, indicating 2023-08-14 10:00:00.
                                                                                                                  
+
                                                                                                                  select from_utc_timestamp('2023-08-14 17:00:00','PST');
                                                                                                                  
+
                                                                                                                  The value 1691917200000 is returned, indicating 2023-08-13 17:00:00.
                                                                                                                  
+
                                                                                                                  select from_utc_timestamp(date '2023-08-14 00:00:00','PST');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select from_utc_timestamp('2023-08-13',null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_get_json_object.html b/docs/dli/sqlreference/dli_spark_get_json_object.html
new file mode 100644
index 00000000..f602fc32
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_get_json_object.html
@@ -0,0 +1,91 @@
+
+
+
                                                                                                                  get_json_object
                                                                                                                  
+
                                                                                                                  This function is used to parse the JSON object in a specified JSON path. The function will return NULL if the JSON object is invalid. 
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  get_json_object(string <json>, string <path>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  json
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Standard JSON object, in the {Key:Value, Key:Value,...} format.
                                                                                                                  
+
                                                                                                                  path
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Path of the object in JSON format, which starts with $. The meanings of characters are as follows:
                                                                                                                  
+
                                                                                                                  • $ indicates the root node.
                                                                                                                  • . indicates a subnode.
                                                                                                                  • [] indicates the index of an array, which starts from 0.
                                                                                                                  • * indicates the wildcard for []. The entire array is returned. * does not support escape.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of json is empty or in invalid JSON format, NULL is returned.
                                                                                                                  • If the value of json is valid and path is specified, the corresponding string is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Extracts information from the JSON object src_json.json. An example command is as follows:
                                                                                                                    jsonString = {"store": {"fruit":[{"weight":8,"type":"apple"},{"weight":9,"type":"pear"}], "bicycle":{"price":19.95,"color":"red"} }, "email":"amy@only_for_json_udf_test.net", "owner":"Tony" } 
                                                                                                                    
+
                                                                                                                    Extracts the information of the owner field and returns Tony.
                                                                                                                    
+
                                                                                                                    select get_json_object(jsonString, '$.owner'); 
                                                                                                                    
+
                                                                                                                    Extracts the first array information of the store.fruit field and returns {"weight":8,"type":"apple"}.
                                                                                                                    
+
                                                                                                                    select get_json_object(jsonString, '$.store.fruit[0]'); 
                                                                                                                    
+
                                                                                                                    Extracts information about a field that does not exist and returns NULL.
                                                                                                                    
+
                                                                                                                    select get_json_object(jsonString, '$.non_exist_key');
                                                                                                                    
+
                                                                                                                  • Extracts information about an array JSON object. An example command is as follows:
                                                                                                                    The value 22 is returned.
                                                                                                                    
+
                                                                                                                    select get_json_object('{"array":[["a",11],["b",22],["c",33]]}','$.array[1][1]'); 
                                                                                                                    
+
                                                                                                                    The value ["h00","h11","h22"] is returned.
                                                                                                                    
+
                                                                                                                    select get_json_object('{"a":"b","c":{"d":"e","f":"g","h":["h00","h11","h22"]},"i":"j"}','$.c.h[*]'); 
                                                                                                                    
+
                                                                                                                    The value ["h00","h11","h22"] is returned.
                                                                                                                    
+
                                                                                                                    select get_json_object('{"a":"b","c":{"d":"e","f":"g","h":["h00","h11","h22"]},"i":"j"}','$.c.h'); 
                                                                                                                    
+
                                                                                                                    The value h11 is returned.
                                                                                                                    
+
                                                                                                                    select get_json_object('{"a":"b","c":{"d":"e","f":"g","h":["h00","h11","h22"]},"i":"j"}','$.c.h[1]');
                                                                                                                    
+
                                                                                                                  • Extracts information from a JSON object with a period (.). An example command is as follows:
                                                                                                                    Create a table.
                                                                                                                    
+
                                                                                                                    create table json_table (id string, json string); 
                                                                                                                    
+
                                                                                                                    Insert data into the table. The key contains a period (.).
                                                                                                                    
+
                                                                                                                    insert into table json_table (id, json) values ("1", "{\"China.hangzhou\":{\"region\":{\"rid\":6}}}"); 
                                                                                                                    
+
                                                                                                                    Insert data into the table. The key does not contain a period (.).
                                                                                                                    
+
                                                                                                                    insert into table json_table (id, json) values ("2", "{\"China_hangzhou\":{\"region\":{\"rid\":7}}}"); 
                                                                                                                    
+
                                                                                                                    Obtain the value of rid. If the key is China.hangzhou, 6 is returned. Only [''] can be used for parsing because a period (.) is included.
                                                                                                                    
+
                                                                                                                    select get_json_object(json, "$['China.hangzhou'].region['id']") from json_table where id =1; 
                                                                                                                    
+
                                                                                                                    Obtain the value of rid. If the key is China_hangzhou, 7 is returned. You can use either of the following methods:
                                                                                                                    
+
                                                                                                                    select get_json_object(json, "$['China_hangzhou'].region['id']") from json_table where id =2; 
+select get_json_object(json, "$.China_hangzhou.region['id']") from json_table where id =2;
                                                                                                                    
+
                                                                                                                  • The json parameter is either empty or has an invalid format. An example command is as follows:
                                                                                                                    The value NULL is returned.
                                                                                                                    
+
                                                                                                                    select get_json_object('','$.array[2]'); 
                                                                                                                    
+
                                                                                                                    The value NULL is returned.
                                                                                                                    
+
                                                                                                                    select get_json_object('"array":["a",1],"b":["c",3]','$.array[1][1]');
                                                                                                                    
+
                                                                                                                  • A JSON string involves escape. An example command is as follows:
                                                                                                                    The value 3 is returned.
                                                                                                                    
+
                                                                                                                    select get_json_object('{"a":"\\"3\\"","b":"6"}', '$.a');  
                                                                                                                    
+
                                                                                                                    The value 3 is returned.
                                                                                                                    
+
                                                                                                                    select get_json_object('{"a":"\'3\'","b":"6"}', '$.a'); 
                                                                                                                    
+
                                                                                                                  • A JSON object can contain the same key and can be parsed successfully.
                                                                                                                    The value 1 is returned.
                                                                                                                    
+
                                                                                                                    select get_json_object('{"b":"1","b":"2"}', '$.b');
                                                                                                                    
+
                                                                                                                  • The result is output in the original sorting mode of the JSON string.
                                                                                                                    The value {"b":"3","a":"4"} is returned.
                                                                                                                    
+
                                                                                                                    select get_json_object('{"b":"3","a":"4"}', '$');
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_getdate.html b/docs/dli/sqlreference/dli_spark_getdate.html
new file mode 100644
index 00000000..3fa14f53
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_getdate.html
@@ -0,0 +1,21 @@
+
+
+
                                                                                                                  getdate
                                                                                                                  
+
                                                                                                                  This function is used to return the current system time, in the yyyy-mm-dd hh:mi:ss format.
                                                                                                                  
+
                                                                                                                  Similar function: current_date. The current_date function is used to return the current date, in the yyyy-mm-dd format.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  getdate()
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  None
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type, in the yyyy-mm-dd hh:mi:ss format.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  If the current time is 2023-08-10 10:54:00, 2023-08-10 10:54:00 is returned.
                                                                                                                  
+
                                                                                                                  select getdate();
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_greatest.html b/docs/dli/sqlreference/dli_spark_greatest.html
new file mode 100644
index 00000000..ca8b0c4f
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_greatest.html
@@ -0,0 +1,55 @@
+
+
+
                                                                                                                  greatest
                                                                                                                  
+
                                                                                                                  This function is used to return the greatest value in a list of values.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  greatest(T v1, T v2, ...)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  v1
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, or DECIMAL
                                                                                                                  
+
                                                                                                                  The value can be a float or integer.
                                                                                                                  
+
                                                                                                                  v2
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, or DECIMAL
                                                                                                                  
+
                                                                                                                  The value can be a float or integer.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 4.0 is returned.
                                                                                                                  
+
                                                                                                                  select greatest(1,2.0,3,4.0);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select greatest(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_hex.html b/docs/dli/sqlreference/dli_spark_hex.html
new file mode 100644
index 00000000..51c12b51
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_hex.html
@@ -0,0 +1,56 @@
+
+
+
                                                                                                                  hex
                                                                                                                  
+
                                                                                                                  This function is used to convert an integer or character into its hexadecimal representation.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  hex(BIGINT a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the BIGINT type, the system will implicitly convert it to the BIGINT type for calculation.
                                                                                                                  
+
                                                                                                                  The string is converted to its corresponding ASCII code.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of a is 0, 0 is returned.
                                                                                                                  • If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 0 is returned.
                                                                                                                  
+
                                                                                                                  select hex(0);
                                                                                                                  
+
                                                                                                                  The value 61 is returned.
                                                                                                                  
+
                                                                                                                  select hex('a');
                                                                                                                  
+
                                                                                                                  The value 10 is returned.
                                                                                                                  
+
                                                                                                                  select hex(16);
                                                                                                                  
+
                                                                                                                  The value 31 is returned.
                                                                                                                  
+
                                                                                                                  select hex('1');
                                                                                                                  
+
                                                                                                                  The value 3136 is returned.
                                                                                                                  
+
                                                                                                                  select hex('16');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select hex(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_hour.html b/docs/dli/sqlreference/dli_spark_hour.html
new file mode 100644
index 00000000..b4d0068f
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_hour.html
@@ -0,0 +1,54 @@
+
+
+
                                                                                                                  hour
                                                                                                                  
+
                                                                                                                  This function is used to return the hour (from 0 to 23) of a specified time.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  hour(string date)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Date that needs to be processed
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 10 is returned.
                                                                                                                  
+
                                                                                                                  select hour('2023-08-10 10:54:00');
                                                                                                                  
+
                                                                                                                  The value 12 is returned.
                                                                                                                  
+
                                                                                                                  select hour('12:00:00');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select hour('20230810105600');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select hour(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_initcap.html b/docs/dli/sqlreference/dli_spark_initcap.html
new file mode 100644
index 00000000..757e776b
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_initcap.html
@@ -0,0 +1,42 @@
+
+
+
                                                                                                                  initcap
                                                                                                                  
+
                                                                                                                  This function is used to convert the first letter of each word of a string to upper case and all other letters to lower case.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  initcap(string A) 
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  A
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Text string to be converted
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type. In the string, the first letter of each word is capitalized, and the other letters are lowercased.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value Dli Sql is returned.
                                                                                                                  
+
                                                                                                                  SELECT initcap("dLI sql");
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_instr.html b/docs/dli/sqlreference/dli_spark_instr.html
new file mode 100644
index 00000000..2ccf0b68
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_instr.html
@@ -0,0 +1,60 @@
+
+
+
                                                                                                                  instr
                                                                                                                  
+
                                                                                                                  This function is used to return the index of substr that appears earliest in str.
                                                                                                                  
+
                                                                                                                  It returns NULL if either of the arguments are NULL and returns 0 if substr does not exist in str. Note that the first character in str has index 1.
                                                                                                                  
+
                                                                                                                  Similar function: instr1. The instr1 function is used to calculate the position of the substring str2 in the string str1. The instr1 function allows you to specify the start search position and the number of matching times.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  instr(string <str>, string <substr>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Target string to be searched for
                                                                                                                  
+
                                                                                                                  If the value is of the BIGINT, DOUBLE, DECIMAL, or DATETIME type, the value is implicitly converted to the STRING type for calculation. For other types of values, an error is reported.
                                                                                                                  
+
                                                                                                                  substr
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Substring to be matched
                                                                                                                  
+
                                                                                                                  If the value is of the BIGINT, DOUBLE, DECIMAL, or DATETIME type, the value is implicitly converted to the STRING type for calculation. For other types of values, an error is reported.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If str2 is not found in str1, 0 is returned.
                                                                                                                  • If str2 is an empty string, the matching is always successful. For example, select instr('abc',''); returns 1.
                                                                                                                  • If the value of str1 or str2 is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Returns the position of character b in string abc. An example command is as follows:
                                                                                                                    The value 2 is returned.
                                                                                                                    
+
                                                                                                                    select instr('abc', 'b');
                                                                                                                    
+
                                                                                                                  • The value of any input parameter is NULL. An example command is as follows:
                                                                                                                    The value NULL is returned.
                                                                                                                    
+
                                                                                                                    select instr('abc', null)
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_instr1.html b/docs/dli/sqlreference/dli_spark_instr1.html
new file mode 100644
index 00000000..fd63a4fd
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_instr1.html
@@ -0,0 +1,80 @@
+
+
+
                                                                                                                  instr1
                                                                                                                  
+
                                                                                                                  This function is used to return the position of substring str2 in string str1.
                                                                                                                  
+
                                                                                                                  Similar function: instr. The instr function is used to return the index of substr that appears earliest in str. However, instr does not support specifying the start search position and matching times.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  instr1(string <str1>, string <str2>[, bigint <start_position>[, bigint <nth_appearance>]])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str1
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Target string to be searched for
                                                                                                                  
+
                                                                                                                  If the value is of the BIGINT, DOUBLE, DECIMAL, or DATETIME type, the value is implicitly converted to the STRING type for calculation. For other types of values, an error is reported.
                                                                                                                  
+
                                                                                                                  str2
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Substring to be matched
                                                                                                                  
+
                                                                                                                  If the value is of the BIGINT, DOUBLE, DECIMAL, or DATETIME type, the value is implicitly converted to the STRING type for calculation. For other types of values, an error is reported.
                                                                                                                  
+
                                                                                                                  start_position
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Sequence number of the character in str1 the search starts from. The default start position is position 1 (position of the first character).
                                                                                                                  
+
                                                                                                                  If this parameter is set to a negative number, the search starts from the end to the beginning of the string, and the last character is -1.
                                                                                                                  
+
                                                                                                                  nth_appearance
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Position of str2 that is matched for the nth_appearance time in str1.
                                                                                                                  
+
                                                                                                                  If the value is of another type or is less than or equal to 0, an error is reported.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If str2 is not found in str1, 0 is returned.
                                                                                                                  • If str2 is an empty string, the matching is always successful.
                                                                                                                  • If the value of str1, str2, start_position, or nth_appearance is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 10 is returned.
                                                                                                                  
+
                                                                                                                  select instr1('Tech on the net', 'h', 5, 1);
                                                                                                                  
+
                                                                                                                  The value 2 is returned.
                                                                                                                  
+
                                                                                                                  select instr1('abc', 'b');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select instr('abc', null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_isdate.html b/docs/dli/sqlreference/dli_spark_isdate.html
new file mode 100644
index 00000000..11c48e65
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_isdate.html
@@ -0,0 +1,62 @@
+
+
+
                                                                                                                  isdate
                                                                                                                  
+
                                                                                                                  This function is used to determine whether a date string can be converted into a date value based on a specified format.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  isdate(string date , string format)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be checked
                                                                                                                  
+
                                                                                                                  If the value is of the BIGINT, DOUBLE, DECIMAL, or DATETIME type, the value is implicitly converted to the STRING type for calculation.
                                                                                                                  
+
                                                                                                                  The value can be any string.
                                                                                                                  
+
                                                                                                                  format
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Format of the date to be converted
                                                                                                                  
+
                                                                                                                  Constant of the STRING type. Extended date formats are not supported.
                                                                                                                  
+
                                                                                                                  The value is a combination of the time unit (year, month, day, hour, minute, and second) and any character.
                                                                                                                  
+
                                                                                                                  • YYYY or yyyy indicates the year.
                                                                                                                  • MM indicates the month.
                                                                                                                  • mm indicates the minute.
                                                                                                                  • dd indicates the day.
                                                                                                                  • HH indicates the 24-hour clock.
                                                                                                                  • hh indicates the 12-hour clock.
                                                                                                                  • mi indicates the minute.
                                                                                                                  • ss indicates the second.
                                                                                                                  • SSS indicates millisecond.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BOOLEAN type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of date or format is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value true is returned.
                                                                                                                  
+
                                                                                                                   select isdate('2023-08-10','yyyy-mm-dd');
                                                                                                                  
+
                                                                                                                  The value false is returned.
                                                                                                                  
+
                                                                                                                   select isdate(123456789,'yyyy-mm-dd');
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_javahash.html b/docs/dli/sqlreference/dli_spark_javahash.html
new file mode 100644
index 00000000..c8bfc0ac
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_javahash.html
@@ -0,0 +1,46 @@
+
+
+
                                                                                                                  javahash
                                                                                                                  
+
                                                                                                                  This function is used to return the hash value of a.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  javahash(string a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Data whose hash value needs to be returned
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  The hash value is returned. If the value of a is null, an error is reported.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 48690 is returned.
                                                                                                                  
+
                                                                                                                  select javahash("123");
                                                                                                                  
+
                                                                                                                  The value 123 is returned.
                                                                                                                  
+
                                                                                                                  select javahash(123);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Other Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_keyvalue.html b/docs/dli/sqlreference/dli_spark_keyvalue.html
new file mode 100644
index 00000000..f33b97a4
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_keyvalue.html
@@ -0,0 +1,64 @@
+
+
+
                                                                                                                  keyvalue
                                                                                                                  
+
                                                                                                                  This function is used to split str by split1, convert each group into a key-value pair by split2, and return the value corresponding to the key.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  keyvalue(string <str>,[string <split1>,string <split2>,] string <key>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be split
                                                                                                                  
+
                                                                                                                  split1, split2
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Strings used as separators to split the source string. If these two separators are not specified in the expression, the default values are ; for split1 and : for split2. If there are multiple occurrences of split2 within a string that has been split by split1, the result is undefined.
                                                                                                                  
+
                                                                                                                  key
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  The corresponding value when the string is split using split1 and split2.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of split1 or split2 is NULL, NULL is returned.
                                                                                                                  • If the value of str or key is NULL or no matching key is found, NULL is returned.
                                                                                                                  • If multiple key-value pairs are matched, the value corresponding to the first matched key is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2 is returned.
                                                                                                                  
+
                                                                                                                  select keyvalue('a:1;b:2', 'b');
                                                                                                                  
+
                                                                                                                  The value 2 is returned.
                                                                                                                  
+
                                                                                                                  select keyvalue("\;abc:1\;def:2","\;",":","def");
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_lag.html b/docs/dli/sqlreference/dli_spark_lag.html
new file mode 100644
index 00000000..42aaea08
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_lag.html
@@ -0,0 +1,135 @@
+
+
+
                                                                                                                  lag
                                                                                                                  
+
                                                                                                                  This function is used to return the value of the nth row upwards within a specified window.
                                                                                                                  
+
                                                                                                                  Restrictions
                                                                                                                  The restrictions on using window functions are as follows:
                                                                                                                  
+
                                                                                                                  • Window functions can be used only in select statements.
                                                                                                                  • Window functions and aggregate functions cannot be nested in window functions.
                                                                                                                  • Window functions cannot be used together with aggregate functions of the same level.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  lag(<expr>[, bigint <offset>[, <default>]]) over([partition_clause] orderby_clause)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  expr
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Expression whose return result is to be calculated
                                                                                                                  
+
                                                                                                                  offset
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Offset. It is a constant of the BIGINT type and its value is greater than or equal to 0. The value 0 indicates the current row, the value 1 indicates the previous row, and so on. The default value is 1. If the input value is of the STRING or DOUBLE type, it is implicitly converted to the BIGINT type before calculation.
                                                                                                                  
+
                                                                                                                  default
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Constant. The default value is NULL.
                                                                                                                  
+
                                                                                                                  Default value when the range specified by offset is out of range. The value must be the same as the data type corresponding to expr. If expr is non-constant, the evaluation is performed based on the current row.
                                                                                                                  
+
                                                                                                                  partition_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Partition. Rows with the same value in partition columns are considered to be in the same window.
                                                                                                                  
+
                                                                                                                  orderby_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  It is used to specify how data is sorted in a window.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the data type of the parameter.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  Example data
                                                                                                                  
+
                                                                                                                  To help you understand how to use functions, this example provides source data and function examples based on the source data. Run the following command to create the logs table and add data:
                                                                                                                  create table logs(
+ cookieid string,
+ createtime string,
+ url string
+) 
+STORED AS parquet;
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Adds the following data:
                                                                                                                  
+
                                                                                                                  cookie1 2015-04-10 10:00:02 url2
+cookie1 2015-04-10 10:00:00 url1
+cookie1 2015-04-10 10:03:04 url3
+cookie1 2015-04-10 10:50:05 url6
+cookie1 2015-04-10 11:00:00 url7
+cookie1 2015-04-10 10:10:00 url4
+cookie1 2015-04-10 10:50:01 url5
+cookie2 2015-04-10 10:00:02 url22
+cookie2 2015-04-10 10:00:00 url11
+cookie2 2015-04-10 10:03:04 url33
+cookie2 2015-04-10 10:50:05 url66
+cookie2 2015-04-10 11:00:00 url77
+cookie2 2015-04-10 10:10:00 url44
+cookie2 2015-04-10 10:50:01 url55
                                                                                                                  
+
                                                                                                                  Groups all records by cookieid, sorts the records by createtime in ascending order, and returns the value of the second row above the window. An example command is as follows:
                                                                                                                  
+
                                                                                                                  Example 1:
                                                                                                                  
+
                                                                                                                  SELECT cookieid, createtime, url,
+       LAG(createtime, 2) OVER (PARTITION BY cookieid ORDER BY createtime) AS last_2_time
+FROM logs;
+-- Returned result:
+cookieid createtime         url  last_2_time
+cookie1 2015-04-10 10:00:00 url1 NULL
+cookie1 2015-04-10 10:00:02 url2 NULL
+cookie1 2015-04-10 10:03:04 url3 2015-04-10 10:00:00
+cookie1 2015-04-10 10:10:00 url4 2015-04-10 10:00:02
+cookie1 2015-04-10 10:50:01 url5 2015-04-10 10:03:04
+cookie1 2015-04-10 10:50:05 url6 2015-04-10 10:10:00
+cookie1 2015-04-10 11:00:00 url7 2015-04-10 10:50:01
+cookie2 2015-04-10 10:00:00 url11 NULL
+cookie2 2015-04-10 10:00:02 url22 NULL
+cookie2 2015-04-10 10:03:04 url33 2015-04-10 10:00:00
+cookie2 2015-04-10 10:10:00 url44 2015-04-10 10:00:02
+cookie2 2015-04-10 10:50:01 url55 2015-04-10 10:03:04
+cookie2 2015-04-10 10:50:05 url66 2015-04-10 10:10:00
+cookie2 2015-04-10 11:00:00 url77 2015-04-10 10:50:01
                                                                                                                  
+
                                                                                                                   
                                                                                                                  Note: Because no default value is set, NULL is returned when the preceding two rows do not exist.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example 2:
                                                                                                                  
+
                                                                                                                  SELECT cookieid, createtime, url,
+       LAG(createtime,1,'1970-01-01 00:00:00') OVER (PARTITION BY cookieid ORDER BY createtime) AS last_1_time
+FROM cookie4;
+-- Result:
+cookieid createtime          url last_1_time
+cookie1 2015-04-10 10:00:00 url1 1970-01-01 00:00:00 (The default value is displayed.)
+cookie1 2015-04-10 10:00:02 url2 2015-04-10 10:00:00
+cookie1 2015-04-10 10:03:04 url3 2015-04-10 10:00:02
+cookie1 2015-04-10 10:10:00 url4 2015-04-10 10:03:04
+cookie1 2015-04-10 10:50:01 url5 2015-04-10 10:10:00
+cookie1 2015-04-10 10:50:05 url6 2015-04-10 10:50:01
+cookie1 2015-04-10 11:00:00 url7 2015-04-10 10:50:05
+cookie2 2015-04-10 10:00:00 url11 1970-01-01 00:00:00 (The default value is displayed.)
+cookie2 2015-04-10 10:00:02 url22 2015-04-10 10:00:00
+cookie2 2015-04-10 10:03:04 url33 2015-04-10 10:00:02
+cookie2 2015-04-10 10:10:00 url44 2015-04-10 10:03:04
+cookie2 2015-04-10 10:50:01 url55 2015-04-10 10:10:00
+cookie2 2015-04-10 10:50:05 url66 2015-04-10 10:50:01
+cookie2 2015-04-10 11:00:00 url77 2015-04-10 10:50:05
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Window Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_last_day.html b/docs/dli/sqlreference/dli_spark_last_day.html
new file mode 100644
index 00000000..b21606a7
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_last_day.html
@@ -0,0 +1,53 @@
+
+
+
                                                                                                                  last_day
                                                                                                                  
+
                                                                                                                  This function is used to return the last day of the month a date belongs to.
                                                                                                                  
+
                                                                                                                  Similar function: lastday. The lastday function is used to return the last day of the month a date belongs to. The hour, minute, and second part is 00:00:00.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  last_day(string date)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Date that needs to be processed
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DATE type, in the yyyy-mm-dd format.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2023-08-31 is returned.
                                                                                                                  
+
                                                                                                                   select last_day('2023-08-15');
                                                                                                                  
+
                                                                                                                  The value 2023-08-31 is returned.
                                                                                                                  
+
                                                                                                                   select last_day('2023-08-10 10:54:00');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                   select last_day('20230810');
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_last_value.html b/docs/dli/sqlreference/dli_spark_last_value.html
new file mode 100644
index 00000000..fc4ff241
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_last_value.html
@@ -0,0 +1,113 @@
+
+
+
                                                                                                                  last_value
                                                                                                                  
+
                                                                                                                  This function is used to obtain the value of the last data record in the window corresponding to the current row.
                                                                                                                  
+
                                                                                                                  Restrictions
                                                                                                                  The restrictions on using window functions are as follows:
                                                                                                                  
+
                                                                                                                  • Window functions can be used only in select statements.
                                                                                                                  • Window functions and aggregate functions cannot be nested in window functions.
                                                                                                                  • Window functions cannot be used together with aggregate functions of the same level.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  last_value(<expr>[, <ignore_nulls>]) over ([partition_clause] [orderby_clause] [frame_clause])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  expr
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Expression whose return result is to be calculated
                                                                                                                  
+
                                                                                                                  ignore_nulls
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  The value is of the BOOLEAN type, indicating whether to ignore NULL values. The default value is False.
                                                                                                                  
+
                                                                                                                  If the value is True, the first non-null value in the window is returned.
                                                                                                                  
+
                                                                                                                  partition_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Partition. Rows with the same value in partition columns are considered to be in the same window.
                                                                                                                  
+
                                                                                                                  orderby_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  It is used to specify how data is sorted in a window.
                                                                                                                  
+
                                                                                                                  frame_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  It is used to determine the data boundary.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the data type of the parameter.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  To help you understand how to use functions, this example provides source data and function examples based on the source data. Run the following command to create the logs table and add data:
                                                                                                                  create table logs(
+ cookieid string,
+ createtime string,
+ url string
+) 
+STORED AS parquet;
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Adds the following data:
                                                                                                                  
+
                                                                                                                  cookie1 2015-04-10 10:00:02 url2
+cookie1 2015-04-10 10:00:00 url1
+cookie1 2015-04-10 10:03:04 url3
+cookie1 2015-04-10 10:50:05 url6
+cookie1 2015-04-10 11:00:00 url7
+cookie1 2015-04-10 10:10:00 url4
+cookie1 2015-04-10 10:50:01 url5
+cookie2 2015-04-10 10:00:02 url22
+cookie2 2015-04-10 10:00:00 url11
+cookie2 2015-04-10 10:03:04 url33
+cookie2 2015-04-10 10:50:05 url66
+cookie2 2015-04-10 11:00:00 url77
+cookie2 2015-04-10 10:10:00 url44
+cookie2 2015-04-10 10:50:01 url55
                                                                                                                  
+
                                                                                                                  Example: Groups all records by cookieid, sorts the records by createtime in ascending order, and returns the last row of data in each group. An example command is as follows:
                                                                                                                  
+
                                                                                                                  SELECT cookieid, createtime, url,
+       LAST_VALUE(url) OVER(PARTITION BY cookieid ORDER BY createtime) AS last
+FROM logs;
+
+-- Returned result:
+cookieid createtime         url last
+cookie1 2015-04-10 10:00:00 url1 url1
+cookie1 2015-04-10 10:00:02 url2 url2
+cookie1 2015-04-10 10:03:04 url3 url3
+cookie1 2015-04-10 10:10:00 url4 url4
+cookie1 2015-04-10 10:50:01 url5 url5
+cookie1 2015-04-10 10:50:05 url6 url6
+cookie1 2015-04-10 11:00:00 url7 url7
+cookie2 2015-04-10 10:00:00 url11 url11
+cookie2 2015-04-10 10:00:02 url22 url22
+cookie2 2015-04-10 10:03:04 url33 url33
+cookie2 2015-04-10 10:10:00 url44 url44
+cookie2 2015-04-10 10:50:01 url55 url55
+cookie2 2015-04-10 10:50:05 url66 url66
+cookie2 2015-04-10 11:00:00 url77 url77
                                                                                                                  
+
                                                                                                                   
                                                                                                                  The last value in the current row is actually just itself.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Window Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_lastday.html b/docs/dli/sqlreference/dli_spark_lastday.html
new file mode 100644
index 00000000..0fb0972c
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_lastday.html
@@ -0,0 +1,53 @@
+
+
+
                                                                                                                  lastday
                                                                                                                  
+
                                                                                                                  This function is used to return the last day of the month a date belongs to. The hour, minute, and second part is 00:00:00.
                                                                                                                  
+
                                                                                                                  Similar function: last_day. The last_day function is used to return the last day of the month a date belongs to. The return value is in the yyyy-mm-dd format.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  lastday(string date)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Date that needs to be processed
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type, in the yyyy-mm-dd hh:mi:ss format.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2023-08-31 is returned.
                                                                                                                  
+
                                                                                                                   select lastday('2023-08-10');
                                                                                                                  
+
                                                                                                                  The value 2023-08-31 00:00:00 is returned.
                                                                                                                  
+
                                                                                                                   select lastday ('2023-08-10 10:54:00');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                   select lastday (null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_lead.html b/docs/dli/sqlreference/dli_spark_lead.html
new file mode 100644
index 00000000..3e476cb4
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_lead.html
@@ -0,0 +1,113 @@
+
+
+
                                                                                                                  lead
                                                                                                                  
+
                                                                                                                  This function is used to return the value of the nth row downwards within a specified window.
                                                                                                                  
+
                                                                                                                  Restrictions
                                                                                                                  The restrictions on using window functions are as follows:
                                                                                                                  
+
                                                                                                                  • Window functions can be used only in select statements.
                                                                                                                  • Window functions and aggregate functions cannot be nested in window functions.
                                                                                                                  • Window functions cannot be used together with aggregate functions of the same level.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  lead(<expr>[, bigint <offset>[, <default>]]) over([partition_clause] orderby_clause)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  expr
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Expression whose return result is to be calculated
                                                                                                                  
+
                                                                                                                  offset
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Offset. It is a constant of the BIGINT type and its value is greater than or equal to 0. The value 0 indicates the current row, the value 1 indicates the previous row, and so on. The default value is 1. If the input value is of the STRING or DOUBLE type, it is implicitly converted to the BIGINT type before calculation.
                                                                                                                  
+
                                                                                                                  default
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Constant. The default value is NULL.
                                                                                                                  
+
                                                                                                                  Default value when the range specified by offset is out of range. The value must be the same as the data type corresponding to expr. If expr is non-constant, the evaluation is performed based on the current row.
                                                                                                                  
+
                                                                                                                  partition_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Partition. Rows with the same value in partition columns are considered to be in the same window.
                                                                                                                  
+
                                                                                                                  orderby_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  It is used to specify how data is sorted in a window.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the data type of the parameter.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  Example data
                                                                                                                  
+
                                                                                                                  To help you understand how to use functions, this example provides source data and function examples based on the source data. Run the following command to create the logs table and add data:
                                                                                                                  create table logs(
+ cookieid string,
+ createtime string,
+ url string
+) 
+STORED AS parquet;
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Adds the following data:
                                                                                                                  
+
                                                                                                                  cookie1 2015-04-10 10:00:02 url2
+cookie1 2015-04-10 10:00:00 url1
+cookie1 2015-04-10 10:03:04 url3
+cookie1 2015-04-10 10:50:05 url6
+cookie1 2015-04-10 11:00:00 url7
+cookie1 2015-04-10 10:10:00 url4
+cookie1 2015-04-10 10:50:01 url5
+cookie2 2015-04-10 10:00:02 url22
+cookie2 2015-04-10 10:00:00 url11
+cookie2 2015-04-10 10:03:04 url33
+cookie2 2015-04-10 10:50:05 url66
+cookie2 2015-04-10 11:00:00 url77
+cookie2 2015-04-10 10:10:00 url44
+cookie2 2015-04-10 10:50:01 url55
                                                                                                                  
+
                                                                                                                  Groups all records by cookieid, sorts them by createtime in ascending order, and returns the values of the second and first rows downwards within the specified window. An example command is as follows:
                                                                                                                  
+
                                                                                                                  SELECT cookieid, createtime, url,
+       LEAD(createtime, 2) OVER(PARTITION BY cookieid ORDER BY createtime) AS next_2_time,
+       LEAD(createtime, 1, '1970-01-01 00:00:00') OVER(PARTITION BY cookieid ORDER BY createtime) AS next_1_time
+FROM logs;
+
+-- Returned result:
+cookieid createtime         url  next_2_time          next_1_time
+cookie1 2015-04-10 10:00:00 url1 2015-04-10 10:03:04  2015-04-10 10:00:02
+cookie1 2015-04-10 10:00:02 url2 2015-04-10 10:10:00  2015-04-10 10:03:04
+cookie1 2015-04-10 10:03:04 url3 2015-04-10 10:50:01  2015-04-10 10:10:00
+cookie1 2015-04-10 10:10:00 url4 2015-04-10 10:50:05  2015-04-10 10:50:01
+cookie1 2015-04-10 10:50:01 url5 2015-04-10 11:00:00  2015-04-10 10:50:05
+cookie1 2015-04-10 10:50:05 url6 NULL                 2015-04-10 11:00:00
+cookie1 2015-04-10 11:00:00 url7 NULL                 1970-01-01 00:00:00
+cookie2 2015-04-10 10:00:00 url11 2015-04-10 10:03:04 2015-04-10 10:00:02
+cookie2 2015-04-10 10:00:02 url22 2015-04-10 10:10:00 2015-04-10 10:03:04
+cookie2 2015-04-10 10:03:04 url33 2015-04-10 10:50:01 2015-04-10 10:10:00
+cookie2 2015-04-10 10:10:00 url44 2015-04-10 10:50:05 2015-04-10 10:50:01
+cookie2 2015-04-10 10:50:01 url55 2015-04-10 11:00:00 2015-04-10 10:50:05
+cookie2 2015-04-10 10:50:05 url66 NULL                2015-04-10 11:00:00
+cookie2 2015-04-10 11:00:00 url77 NULL                1970-01-01 00:00:00
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Window Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_least.html b/docs/dli/sqlreference/dli_spark_least.html
new file mode 100644
index 00000000..f9366132
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_least.html
@@ -0,0 +1,55 @@
+
+
+
                                                                                                                  least
                                                                                                                  
+
                                                                                                                  This function is used to return the smallest value in a list of values.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  least(T v1, T v2, ...)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  v1
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, or DECIMAL
                                                                                                                  
+
                                                                                                                  The value can be a float or integer.
                                                                                                                  
+
                                                                                                                  v2
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, or DECIMAL
                                                                                                                  
+
                                                                                                                  The value can be a float or integer.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of v1 or v2 is of the STRING type, an error is reported.
                                                                                                                  • If the values of all parameters are NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 1.0 is returned.
                                                                                                                  
+
                                                                                                                  select least(1,2.0,3,4.0);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select least(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_length.html b/docs/dli/sqlreference/dli_spark_length.html
new file mode 100644
index 00000000..1a63e576
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_length.html
@@ -0,0 +1,49 @@
+
+
+
                                                                                                                  length
                                                                                                                  
+
                                                                                                                  This function is used to return the length of a string.
                                                                                                                  
+
                                                                                                                  Similar function: lengthb. The lengthb function is used to return the length of string str in bytes and return a value of the STRING type.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  length(string <str>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Target string to be searched for
                                                                                                                  
+
                                                                                                                  If the value is of the BIGINT, DOUBLE, DECIMAL, or DATETIME type, the value is implicitly converted to the STRING type for calculation. For other types of values, an error is reported.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of str is not of the STRING, BIGINT, DOUBLE, DECIMAL, or DATETIME type, an error is reported.
                                                                                                                  • If the value of str is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Calculate the length of string abc. An example command is as follows:
                                                                                                                    The value 3 is returned.
                                                                                                                    
+
                                                                                                                    select length('abc');
                                                                                                                    
+
                                                                                                                  • The value of the input parameter is NULL. An example command is as follows:
                                                                                                                    The value NULL is returned.
                                                                                                                    
+
                                                                                                                    select length(null);
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_lengthb.html b/docs/dli/sqlreference/dli_spark_lengthb.html
new file mode 100644
index 00000000..4093b033
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_lengthb.html
@@ -0,0 +1,47 @@
+
+
+
                                                                                                                  lengthb
                                                                                                                  
+
                                                                                                                  This function is used to return the length of a specified string in bytes.
                                                                                                                  
+
                                                                                                                  Similar function: length. The length function is used to return the length of a string and return a value of the BIGINT type.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  lengthb(string <str>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Input string
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of str is not of the STRING, BIGINT, DOUBLE, DECIMAL, or DATETIME type, an error is reported.
                                                                                                                  • If the value of str is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 5 is returned.
                                                                                                                  
+
                                                                                                                  select lengthb('hello');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select lengthb(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_levenshtein.html b/docs/dli/sqlreference/dli_spark_levenshtein.html
new file mode 100644
index 00000000..507d5d35
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_levenshtein.html
@@ -0,0 +1,44 @@
+
+
+
                                                                                                                  levenshtein
                                                                                                                  
+
                                                                                                                  This function is used to returns the Levenshtein distance between two strings, for example, levenshtein('kitten','sitting') = 3.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  Levenshtein distance is a type of edit distance. It indicates the minimum number of edit operations required to convert one string into another.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  levenshtein(string A, string B)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  A, B
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be entered for calculating the Levenshtein distance
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the INT type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 3 is returned.
                                                                                                                  
+
                                                                                                                  SELECT levenshtein('kitten','sitting');
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_ln.html b/docs/dli/sqlreference/dli_spark_ln.html
new file mode 100644
index 00000000..eaab7c17
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_ln.html
@@ -0,0 +1,49 @@
+
+
+
                                                                                                                  ln
                                                                                                                  
+
                                                                                                                  This function is used to return the natural logarithm of a given value.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  ln(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of a is negative or 0, NULL is returned.
                                                                                                                  • If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 1.144729868791239 is returned.
                                                                                                                  
+
                                                                                                                  select ln(3.1415926);
                                                                                                                  
+
                                                                                                                  The value 1 is returned.
                                                                                                                  
+
                                                                                                                  select ln(2.718281828459045);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select ln(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_locate.html b/docs/dli/sqlreference/dli_spark_locate.html
new file mode 100644
index 00000000..4dd3895f
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_locate.html
@@ -0,0 +1,71 @@
+
+
+
                                                                                                                  locate
                                                                                                                  
+
                                                                                                                  This function is used to return the position of substr in str. You can specify the starting position of your search using "start_pos," which starts from 1.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  locate(string <substr>, string <str>[, bigint <start_pos>])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Target string to be searched for
                                                                                                                  
+
                                                                                                                  If the value is of the BIGINT, DOUBLE, DECIMAL, or DATETIME type, the value is implicitly converted to the STRING type for calculation. For other types of values, an error is reported.
                                                                                                                  
+
                                                                                                                  substr
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Substring to be matched
                                                                                                                  
+
                                                                                                                  If the value is of the BIGINT, DOUBLE, DECIMAL, or DATETIME type, the value is implicitly converted to the STRING type for calculation. For other types of values, an error is reported.
                                                                                                                  
+
                                                                                                                  start_pos
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Start position for the search
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If substr cannot be matched in str, 0 is returned.
                                                                                                                  • If the value of str or substr is NULL, NULL is returned.
                                                                                                                  • If the value of start_pos is NULL, 0 is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Search for the position of string ab in string abhiab. An example command is as follows:
                                                                                                                    The value 1 is returned.
                                                                                                                    
+
                                                                                                                    select locate('ab', 'abhiab');
                                                                                                                    
+
                                                                                                                    The value 5 is returned.
                                                                                                                    
+
                                                                                                                    select locate('ab', 'abhiab', 2);
                                                                                                                    
+
                                                                                                                    The value 0 is returned.
                                                                                                                    
+
                                                                                                                    select locate('ab', 'abhiab', null);
                                                                                                                    
+
                                                                                                                  • Search for the position of string hi in string hanmeimei and lilei. An example command is as follows:
                                                                                                                    The value 0 is returned.
                                                                                                                    
+
                                                                                                                    select locate('hi', 'hanmeimei and lilei');
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_log.html b/docs/dli/sqlreference/dli_spark_log.html
new file mode 100644
index 00000000..c45caa28
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_log.html
@@ -0,0 +1,60 @@
+
+
+
                                                                                                                  log
                                                                                                                  
+
                                                                                                                  This function is used to return the natural logarithm of a given base and exponent.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  log(DOUBLE base, DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  base
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of base or a is NULL, NULL is returned.
                                                                                                                  • If the value of base or a is negative or 0, NULL is returned.
                                                                                                                  • If the value of base is 1 (would cause a division by zero), NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2 is returned.
                                                                                                                  
+
                                                                                                                  select log(2, 4);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select log(2, null);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select log(null, 4);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_log10.html b/docs/dli/sqlreference/dli_spark_log10.html
new file mode 100644
index 00000000..17671078
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_log10.html
@@ -0,0 +1,51 @@
+
+
+
                                                                                                                  log10
                                                                                                                  
+
                                                                                                                  This function is used to return the natural logarithm of a given value with a base of 10.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  log10(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is negative, 0, or NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select log10(null);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select log10(0);
                                                                                                                  
+
                                                                                                                  The value 0.9542425094393249 is returned.
                                                                                                                  
+
                                                                                                                  select log10(9);
                                                                                                                  
+
                                                                                                                  The value 1 is returned.
                                                                                                                  
+
                                                                                                                  select log10(10);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_log2.html b/docs/dli/sqlreference/dli_spark_log2.html
new file mode 100644
index 00000000..da671f4b
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_log2.html
@@ -0,0 +1,51 @@
+
+
+
                                                                                                                  log2
                                                                                                                  
+
                                                                                                                  This function is used to return the natural logarithm of a given value with a base of 2.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  log2(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is negative, 0, or NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select log2(null);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select log2(0);
                                                                                                                  
+
                                                                                                                  The value 3.1699250014423126 is returned.
                                                                                                                  
+
                                                                                                                  select log2(9);
                                                                                                                  
+
                                                                                                                  The value 4 is returned.
                                                                                                                  
+
                                                                                                                  select log2(16);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_lower_lcase.html b/docs/dli/sqlreference/dli_spark_lower_lcase.html
new file mode 100644
index 00000000..32145f71
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_lower_lcase.html
@@ -0,0 +1,48 @@
+
+
+
                                                                                                                  lower/lcase
                                                                                                                  
+
                                                                                                                  This function is used to convert all characters of a string to the lower case.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  lower(string A) / lcase(string A)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  A
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Text string to be converted
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of the input parameter is not of the STRING, BIGINT, DOUBLE, DECIMAL, or DATETIME type, an error is reported.
                                                                                                                  • If the value of the input parameter is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  Converts uppercase characters in a string to the lower case. An example command is as follows:
                                                                                                                  
+
                                                                                                                  The value abc is returned.
                                                                                                                  
+
                                                                                                                  select lower('ABC');
                                                                                                                  
+
                                                                                                                  The value of the input parameter is NULL. An example command is as follows:
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select lower(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_lpad.html b/docs/dli/sqlreference/dli_spark_lpad.html
new file mode 100644
index 00000000..bfc1ca9b
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_lpad.html
@@ -0,0 +1,69 @@
+
+
+
                                                                                                                  lpad
                                                                                                                  
+
                                                                                                                  This function is used to return a string of a specified length. If the length of the given string (str1) is shorter than the specified length (length), the given string is left-padded with str2 to the specified length.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  lpad(string <str1>, int <length>, string <str2>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str1
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be left-padded
                                                                                                                  
+
                                                                                                                  length
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Number of digits to be padded to the left
                                                                                                                  
+
                                                                                                                  str2
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String used for padding
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of length is smaller than the number of digits in str1, the string whose length is truncated from the left of str1 is returned.
                                                                                                                  • If the value of length is 0, an empty string is returned.
                                                                                                                  • If there is no input parameter or the value of any input parameter is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Uses string ZZ to left pad string abcdefgh to 10 digits. An example command is as follows:
                                                                                                                    The value ZZabcdefgh is returned.
                                                                                                                    
+
                                                                                                                    select lpad('abcdefgh', 10, 'ZZ');
                                                                                                                    
+
                                                                                                                  • Uses string ZZ to left pad string abcdefgh to 5 digits. An example command is as follows:
                                                                                                                    The value abcde is returned.
                                                                                                                    
+
                                                                                                                    select lpad('abcdefgh', 5, 'ZZ');
                                                                                                                    
+
                                                                                                                  • The value of length is 0. An example command is as follows:
                                                                                                                    An empty string is returned.
                                                                                                                    
+
                                                                                                                    select lpad('abcdefgh', 0, 'ZZ'); 
                                                                                                                    
+
                                                                                                                  • The value of any input parameter is NULL. An example command is as follows:
                                                                                                                    The value NULL is returned.
                                                                                                                    
+
                                                                                                                    select lpad(null ,0, 'ZZ');
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_ltrim.html b/docs/dli/sqlreference/dli_spark_ltrim.html
new file mode 100644
index 00000000..810faf9e
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_ltrim.html
@@ -0,0 +1,68 @@
+
+
+
                                                                                                                  ltrim
                                                                                                                  
+
                                                                                                                  This function is used to remove characters from the left of str.
                                                                                                                  
+
                                                                                                                  • If trimChars is not specified, spaces are removed by default.
                                                                                                                  • If trimChars is specified, the function removes the longest possible substring from the left end of str that consists of characters in the trimChars set.
                                                                                                                  
+
                                                                                                                  Similar functions:
                                                                                                                  
+
                                                                                                                  • rtrim. This function is used to remove characters from the right of str.
                                                                                                                  • trim. This function is used to remove characters from the left and right of str.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  ltrim([<trimChars>,] string <str>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String from which characters on the left are to be removed. If the value is of the BIGINT, DECIMAL, DOUBLE, or DATETIME type, the value is implicitly converted to the STRING type for calculation.
                                                                                                                  
+
                                                                                                                  trimChars
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Characters to be removed
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of str is not of the STRING, BIGINT, DOUBLE, DECIMAL, or DATETIME type, an error is reported.
                                                                                                                  • If the value of str or trimChars is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Removes spaces on the left of string abc. An example command is as follows:
                                                                                                                    The value stringabc is returned.
                                                                                                                    
+
                                                                                                                    select ltrim('     abc');
                                                                                                                    
+
                                                                                                                    It is equivalent to the following statement:
                                                                                                                    
+
                                                                                                                    select trim(leading from '     abc');
                                                                                                                    
+
                                                                                                                    leading indicates that the leading spaces in a string are removed.
                                                                                                                    
+
                                                                                                                  • The value of the input parameter is NULL. An example command is as follows:
                                                                                                                    The value NULL is returned.
                                                                                                                    
+
                                                                                                                    select ltrim(null); 
+select ltrim('xy', null);
+select ltrim(null, 'xy');
                                                                                                                    
+
                                                                                                                  • Removes all substrings from the left end of the string yxlucyxx that consist of characters in the set xy.
                                                                                                                    The function returns lucyxx, as any substring starting with x or y from the left end is removed.
                                                                                                                    
+
                                                                                                                    select ltrim( 'xy','yxlucyxx'); 
                                                                                                                    
+
                                                                                                                    It is equivalent to the following statement:
                                                                                                                    
+
                                                                                                                    select trim(leading 'xy' from 'yxlucyxx');
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_max.html b/docs/dli/sqlreference/dli_spark_max.html
new file mode 100644
index 00000000..76c01f39
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_max.html
@@ -0,0 +1,54 @@
+
+
+
                                                                                                                  max
                                                                                                                  
+
                                                                                                                  This function is used to return the maximum value.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  max(col)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  col
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Any type except BOOLEAN
                                                                                                                  
+
                                                                                                                  The value can be of any type except BOOLEAN.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  The return type is the same as the type of col. The return rules are as follows:
                                                                                                                  
+
                                                                                                                  • If the value of col is NULL, the row is not involved in calculation.
                                                                                                                  • If the value of col is of the BOOLEAN type, it cannot be used for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Calculates the maximum inventory (items) of all offerings. An example command is as follows:
                                                                                                                    select max(items) from warehouse;
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    _c0        
+900        
                                                                                                                    
+
                                                                                                                  • When used with group by, it returns the maximum inventory of each warehouse. An example command is as follows:
                                                                                                                    select warehourseId, max(items) from warehouse group by warehourseId;
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    warehouseId _c1        
+city1    200        
+city2    300        
+city3    400        
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Aggregate Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_max_pt.html b/docs/dli/sqlreference/dli_spark_max_pt.html
new file mode 100644
index 00000000..e3c3bb35
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_max_pt.html
@@ -0,0 +1,47 @@
+
+
+
                                                                                                                  max_pt
                                                                                                                  
+
                                                                                                                  This function is used to return the name of the largest level-1 partition that contains data in a partitioned table and read the data of this partition.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  max_pt(<table_full_name>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  table_full_name
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Specified table name. You must have the read permission on the table.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • The value of the largest level-1 partition is returned.
                                                                                                                  • If a partition is added to a table using the ALTER TABLE command, but it does not contain any data, it will not be included in the returned values.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  For example, table1 is a partitioned table with partitions of 20120801 and 20120802, both of which contain data, and the max_pt value in the following statement will be 20120802. The DLI SQL statement will read data from the partition with pt = 20120802.
                                                                                                                  
+
                                                                                                                  An example command is as follows:
                                                                                                                  
+
                                                                                                                  select * from tablel where pt = max_pt('dbname.table1'); 
                                                                                                                  
+
                                                                                                                  It is equivalent to the following statement:
                                                                                                                  
+
                                                                                                                  select * from table1 where pt = (select max(pt) from dbname.table1);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Other Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_median.html b/docs/dli/sqlreference/dli_spark_median.html
new file mode 100644
index 00000000..04075126
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_median.html
@@ -0,0 +1,47 @@
+
+
+
                                                                                                                  median
                                                                                                                  
+
                                                                                                                  This function is used to calculate the median of input parameters.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  median(colname)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  colname
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, DECIMAL, STRING, or BIGINT
                                                                                                                  
+
                                                                                                                  Name of the column to be sorted
                                                                                                                  
+
                                                                                                                  The elements in a column are of the DOUBLE type.
                                                                                                                  
+
                                                                                                                  If an element in a column is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE or DECIMAL type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the column name does not exist, an error is reported.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  Assume that the elements in the int_test column are 1, 2, 3, and 4 and they are of the INT type.
                                                                                                                  
+
                                                                                                                  The value 2.5 is returned.
                                                                                                                  
+
                                                                                                                  select median(int_test) FROM int_test;
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_min.html b/docs/dli/sqlreference/dli_spark_min.html
new file mode 100644
index 00000000..5693a1fb
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_min.html
@@ -0,0 +1,54 @@
+
+
+
                                                                                                                  min
                                                                                                                  
+
                                                                                                                  This function is used to return the minimum value.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  min(col)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  col
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Any type except BOOLEAN
                                                                                                                  
+
                                                                                                                  The value can be of any type except BOOLEAN.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  The return type is the same as the type of col. The return rules are as follows:
                                                                                                                  
+
                                                                                                                  • If the value of col is NULL, the row is not involved in calculation.
                                                                                                                  • If the value of col is of the BOOLEAN type, it cannot be used for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Calculates the minimum inventory (items) of all offerings. An example command is as follows:
                                                                                                                    select min(items) from warehouse;
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    _c0        
+600        
                                                                                                                    
+
                                                                                                                  • When used with group by, it returns the minimum inventory of each warehouse. An example command is as follows:
                                                                                                                    select warehourseId, min(items) from warehouse group by warehourseId;
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    warehouseId _c1        
+city1      15         
+city2      10         
+city3      19         
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Aggregate Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_minute.html b/docs/dli/sqlreference/dli_spark_minute.html
new file mode 100644
index 00000000..1e03a072
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_minute.html
@@ -0,0 +1,54 @@
+
+
+
                                                                                                                  minute
                                                                                                                  
+
                                                                                                                  This function is used to return the minute (from 0 to 59) of a specified time.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  minute(string date)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Date that needs to be processed
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 54 is returned.
                                                                                                                  
+
                                                                                                                  select minute('2023-08-10 10:54:00');
                                                                                                                  
+
                                                                                                                  The value 54 is returned.
                                                                                                                  
+
                                                                                                                  select minute('10:54:00');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select minute('20230810105400');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select minute(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_month.html b/docs/dli/sqlreference/dli_spark_month.html
new file mode 100644
index 00000000..a0dfebe4
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_month.html
@@ -0,0 +1,53 @@
+
+
+
                                                                                                                  month
                                                                                                                  
+
                                                                                                                  This function is used to return the month (from January to December) of a specified time.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  month(string date)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Date that needs to be processed
                                                                                                                  
+
                                                                                                                  If the value is of the STRING type, the value must contain at least yyyy-mm-dd and cannot contain redundant strings.
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 8 is returned.
                                                                                                                  
+
                                                                                                                  select month('2023-08-10 10:54:00');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select month('20230810');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select month(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_months_between.html b/docs/dli/sqlreference/dli_spark_months_between.html
new file mode 100644
index 00000000..0192f694
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_months_between.html
@@ -0,0 +1,65 @@
+
+
+
                                                                                                                  months_between
                                                                                                                  
+
                                                                                                                  This function returns the month difference between date1 and date2.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  months_between(string date1, string date2)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date1
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Minuend
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  date2
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Subtrahend
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the values of date1 and date2 are not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the values of date1 and date2 are of the DATE or STRING type but are not in one of the supported formats, NULL is returned.
                                                                                                                  • If date1 is later than date2, the return value is positive. If date2 is later than date1, the return value is negative.
                                                                                                                  • If date1 and date2 correspond to the last day of two different months, an integer month is returned. Otherwise, the calculation is based on the number of days between date1 and date2 divided by 31.
                                                                                                                  • If the value of date1 or date2 is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 0.0563172 is returned.
                                                                                                                  
+
                                                                                                                  select months_between('2023-08-16 10:54:00', '2023-08-14 17:00:00');
                                                                                                                  
+
                                                                                                                  The value 0.06451613 is returned.
                                                                                                                  
+
                                                                                                                  select months_between('2023-08-16','2023-08-14');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select months_between('2023-08-16',null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_negative.html b/docs/dli/sqlreference/dli_spark_negative.html
new file mode 100644
index 00000000..107701eb
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_negative.html
@@ -0,0 +1,46 @@
+
+
+
                                                                                                                  negative
                                                                                                                  
+
                                                                                                                  This function is used to return the additive inverse of a.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  negative(INT a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DECIMAL or INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value -1 is returned.
                                                                                                                  
+
                                                                                                                  SELECT negative(1);
                                                                                                                  
+
                                                                                                                  The value 3 is returned.
                                                                                                                  
+
                                                                                                                  SELECT negative(-3);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_next_day.html b/docs/dli/sqlreference/dli_spark_next_day.html
new file mode 100644
index 00000000..a6ad9785
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_next_day.html
@@ -0,0 +1,66 @@
+
+
+
                                                                                                                  next_day
                                                                                                                  
+
                                                                                                                  This function is used to return the date closest to day_of_week after start_date.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  next_day(string start_date, string day_of_week)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  start_date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Date that needs to be processed
                                                                                                                  
+
                                                                                                                  If the value is of the STRING type, the value must contain at least yyyy-mm-dd and cannot contain redundant strings.
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  day_of_week
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  One day of a week, either the first two or three letters of the word, or the full name of the word for that day. For example, TU indicates Tuesday.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DATE type, in the yyyy-mm-dd format.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of start_date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of start_date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of start_date is NULL, NULL is returned.
                                                                                                                  • If the value of day_of_week is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2023-08-22 is returned.
                                                                                                                  
+
                                                                                                                  select next_day('2023-08-16','TU');
                                                                                                                  
+
                                                                                                                  The value 2023-08-22 is returned.
                                                                                                                  
+
                                                                                                                  select next_day('2023-08-16 10:54:00','TU');
                                                                                                                  
+
                                                                                                                  The value 2023-08-23 is returned.
                                                                                                                  
+
                                                                                                                  select next_day('2023-08-16 10:54:00','WE');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select next_day('20230816','TU');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select next_day('20230816 20:00:00',null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_ordinal.html b/docs/dli/sqlreference/dli_spark_ordinal.html
new file mode 100644
index 00000000..43aff539
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_ordinal.html
@@ -0,0 +1,53 @@
+
+
+
                                                                                                                  ordinal
                                                                                                                  
+
                                                                                                                  This function is used to sort input variables in ascending order and return the value at the position specified by nth.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  ordinal(bigint <nth>, <var1>, <var2>[,...])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  nth
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Position value to be returned
                                                                                                                  
+
                                                                                                                  var
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  BIGINT, DOUBLE, DATETIME, or STRING
                                                                                                                  
+
                                                                                                                  Value to be sorted
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE or DECIMAL type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • Value of the nth bit. If there are no implicit conversions, the return value has the same data type as the input parameter.
                                                                                                                  • If there are type conversions, DOUBLE is returned for the conversion between DOUBLE, BIGINT, and STRING, and DATETIME is returned for the conversion between STRING and DATETIME. Other implicit conversions are not allowed.
                                                                                                                  • NULL indicates the minimum value.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2 is returned.
                                                                                                                  
+
                                                                                                                  select ordinal(3, 1, 3, 2, 5, 2, 4, 9); 
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Other Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_parse_url.html b/docs/dli/sqlreference/dli_spark_parse_url.html
new file mode 100644
index 00000000..1611eaaa
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_parse_url.html
@@ -0,0 +1,76 @@
+
+
+
                                                                                                                  parse_url
                                                                                                                  
+
                                                                                                                  This character is used to return the specified part of a given URL. Valid values of partToExtract include HOST, PATH, QUERY, REF, PROTOCOL, AUTHORITY, FILE, and USERINFO.
                                                                                                                  
+
                                                                                                                  For example, parse_url('http://facebook.com/path1/p.php?k1=v1&k2=v2#Ref1', 'HOST') returns 'facebook.com'.
                                                                                                                  
+
                                                                                                                  When the second parameter is set to QUERY, the third parameter can be used to extract the value of a specific parameter. For example, parse_url('http://facebook.com/path1/p.php?k1=v1&k2=v2#Ref1', 'QUERY', 'k1') returns 'v1'.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  parse_url(string urlString, string partToExtract [, string keyToExtract])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  urlString
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  URL. If the URL is invalid, an error is reported.
                                                                                                                  
+
                                                                                                                  partToExtract
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  The value is case-insensitive and can be HOST, PATH, QUERY, REF, PROTOCOL, AUTHORITY, FILE, or USERINFO.
                                                                                                                  
+
                                                                                                                  keyToExtract
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  If the value of partToExtract is QUERY, the value is obtained based on the key.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type. The return rules are as follows:
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of urlString, partToExtract, or keyToExtract is NULL, NULL is returned.
                                                                                                                  • If the value of partToExtract does not meet requirements, an error is reported.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value example.com is returned.
                                                                                                                  
+
                                                                                                                  select parse_url('file://username@example.com:666/over/there/index.dtb?type=animal&name=narwhal#nose', 'HOST'); 
                                                                                                                  
+
                                                                                                                  The value /over/there/index.dtb is returned.
                                                                                                                  
+
                                                                                                                  select parse_url('file://username@example.com:666/over/there/index.dtb?type=animal&name=narwhal#nose', 'PATH'); 
                                                                                                                  
+
                                                                                                                  The value animal is returned.
                                                                                                                  
+
                                                                                                                  select parse_url('file://username@example.com:666/over/there/index.dtb?type=animal&name=narwhal#nose', 'QUERY', 'type'); 
                                                                                                                  
+
                                                                                                                  The value nose is returned.
                                                                                                                  
+
                                                                                                                  select parse_url('file://username@example.com:666/over/there/index.dtb?type=animal&name=narwhal#nose', 'REF'); 
                                                                                                                  
+
                                                                                                                  The value file is returned.
                                                                                                                  
+
                                                                                                                  select parse_url('file://username@example.com:666/over/there/index.dtb?type=animal&name=narwhal#nose', 'PROTOCOL'); 
                                                                                                                  
+
                                                                                                                  The value username@example.com:8042 is returned.
                                                                                                                  
+
                                                                                                                  select parse_url('file://username@example.com:666/over/there/index.dtb?type=animal&name=narwhal#nose', 'AUTHORITY'); 
                                                                                                                  
+
                                                                                                                  The value username is returned.
                                                                                                                  
+
                                                                                                                  select parse_url('file://username@example.com:666/over/there/index.dtb?type=animal&name=narwhal#nose', 'USERINFO');
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_percent_rank.html b/docs/dli/sqlreference/dli_spark_percent_rank.html
new file mode 100644
index 00000000..af13b2ae
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_percent_rank.html
@@ -0,0 +1,70 @@
+
+
+
                                                                                                                  percent_rank
                                                                                                                  
+
                                                                                                                  This function is used to return the value of the column specified in the ORDER BY clause of a window, expressed as a decimal between 0 and 1. It is calculated as (the rank value of the current row within the group – 1) divided by (the total number of rows in the group – 1).
                                                                                                                  
+
                                                                                                                  Restrictions
                                                                                                                  The restrictions on using window functions are as follows:
                                                                                                                  
+
                                                                                                                  • Window functions can be used only in select statements.
                                                                                                                  • Window functions and aggregate functions cannot be nested in window functions.
                                                                                                                  • Window functions cannot be used together with aggregate functions of the same level.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  percent_rank() over([partition_clause] [orderby_clause])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  partition_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Partition. Rows with the same value in partition columns are considered to be in the same window.
                                                                                                                  
+
                                                                                                                  orderby_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  It is used to specify how data is sorted in a window.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  Example data
                                                                                                                  
+
                                                                                                                  To help you understand how to use functions, this example provides source data and function examples based on the source data. Run the following command to create the salary table and add data:
                                                                                                                  CREATE EXTERNAL TABLE salary (
+dept STRING, -- Department name
+userid string, -- Employee ID
+sal INT -- Salary
+) ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' 
+stored as textfile;
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Adds the following data:
                                                                                                                  
+
                                                                                                                  d1,user1,1000
+d1,user2,2000
+d1,user3,3000
+d2,user4,4000
+d2,user5,5000
                                                                                                                  
+
                                                                                                                  Example: Calculates the percentage ranking of employees' salaries in a department.
                                                                                                                  
+
                                                                                                                  select dept, userid, sal,
+       percent_rank() over(partition by dept order by sal) as pr2
+from salary;
+-- Result analysis:
+d1 user1 1000 0.0    -- (1-1)/(3-1)=0.0
+d1 user2 2000 0.5    -- (2-1)/(3-1)=0.5
+d1 user3 3000 1.0    -- (3-1)/(3-1)=1.0
+d2 user4 4000 0.0    -- (1-1)/(2-1)=0.0
+d2 user5 5000 1.0    -- (2-1)/(2-1)=1.0
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Window Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_percentile.html b/docs/dli/sqlreference/dli_spark_percentile.html
new file mode 100644
index 00000000..b0d1d575
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_percentile.html
@@ -0,0 +1,56 @@
+
+
+
                                                                                                                  percentile
                                                                                                                  
+
                                                                                                                  This function is used to return the numerical value at a certain percentage point within a range of values.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  percentile(BIGINT col, p)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  col
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Columns with a data type of numeric. If the values are of any other type, NULL is returned.
                                                                                                                  
+
                                                                                                                  p
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  The value should be between 0 and 1. Otherwise, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  The value should be between 0 and 1. Otherwise, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Calculates the 0.5 percentile of all offering inventories (items). An example command is as follows:
                                                                                                                    select stddev_samp(items,0.5) from warehouse; 
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    _c0        
+500.6      
                                                                                                                    
+
                                                                                                                  • When used with group by, it groups all offerings by warehouse (warehourseId) and returns the 0.5 percentile of the offering inventory (items) in the same group. An example command is as follows:
                                                                                                                    select warehourseId, stddev_samp(items, 0.5) from warehourse group by warehourseId; 
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    warehouseId _c1        
+city1    499.6      
+city2    354.8      
+city3    565.7      
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Aggregate Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_percentile_approx.html b/docs/dli/sqlreference/dli_spark_percentile_approx.html
new file mode 100644
index 00000000..19f6b16b
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_percentile_approx.html
@@ -0,0 +1,61 @@
+
+
+
                                                                                                                  percentile_approx
                                                                                                                  
+
                                                                                                                  This function is used to approximate the pth percentile (including floating-point numbers) of a numeric column within a group.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  percentile_approx(DOUBLE col, p [, B])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  col
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Columns with a data type of numeric. If the values are of any other type, NULL is returned.
                                                                                                                  
+
                                                                                                                  p
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  The value should be between 0 and 1. Otherwise, NULL is returned.
                                                                                                                  
+
                                                                                                                  B
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  The parameter B controls the accuracy of the approximation, with a higher value of B resulting in a higher level of approximation. The default value is 10000. If the number of non-repeating values in the column is less than B, an exact percentile is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Calculates the 0.5 percentile of all offering inventories (items), with an accuracy of 100. An example command is as follows:
                                                                                                                    select stddev_samp(items,0.5, 100) from warehouse;
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    _c0        
+500        
                                                                                                                    
+
                                                                                                                  • When used with group by, it groups all offerings by warehouse (warehourseId) and returns the 0.5 percentile of the offering inventory (items) in the same group, with an accuracy of 100. An example command is as follows:
                                                                                                                    select warehourseId, stddev_samp(items, 0.5, 100) from warehourse group by warehourseId; 
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    warehouseId _c1        
+city1     499        
+city2     354        
+city3     565        
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Aggregate Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_percentlie.html b/docs/dli/sqlreference/dli_spark_percentlie.html
new file mode 100644
index 00000000..09e9888e
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_percentlie.html
@@ -0,0 +1,61 @@
+
+
+
                                                                                                                  percentlie
                                                                                                                  
+
                                                                                                                  This function is used to return the exact percentile, which is applicable to a small amount of data. It sorts a specified column in ascending order, and then obtains the exact value of the pth percentile.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  percentile(colname,DOUBLE p)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  colname
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Name of the column to be sorted
                                                                                                                  
+
                                                                                                                  The elements in the column must be integers.
                                                                                                                  
+
                                                                                                                  p
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE
                                                                                                                  
+
                                                                                                                  The value ranges from 0 to 1. The value is a float.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE or ARRAY type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the column name does not exist, an error is reported.
                                                                                                                  • If the value of p is NULL or outside the range of [0,1], an error is reported.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  Assume that the elements in the int_test column are 1, 2, 3, and 4 and they are of the INT type.
                                                                                                                  
+
                                                                                                                  The value 3.0999999999999996 is returned.
                                                                                                                  
+
                                                                                                                  select percentile(int_test,0.7) FROM int_test;
                                                                                                                  
+
                                                                                                                  The value 3.997 is returned.
                                                                                                                  
+
                                                                                                                  select percentile(int_test,0.999) FROM int_test;
                                                                                                                  
+
                                                                                                                  The value 2.5 is returned.
                                                                                                                  
+
                                                                                                                  select percentile(int_test,0.5) FROM int_test;
                                                                                                                  
+
                                                                                                                  The value [1.3, 1.9, 2.5, 2.8, 3.7] is returned.
                                                                                                                  
+
                                                                                                                  select percentile (int_test,ARRAY(0.1,0.3,0.5,0.6,0.9)) FROM int_test;
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_percentlie_approx.html b/docs/dli/sqlreference/dli_spark_percentlie_approx.html
new file mode 100644
index 00000000..ddc31308
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_percentlie_approx.html
@@ -0,0 +1,62 @@
+
+
+
                                                                                                                  percentlie_approx
                                                                                                                  
+
                                                                                                                  This function is used to return the approximate percentile, which is applicable to a large amount of data. It sorts a specified column in ascending order, and then obtains the value closest to the pth percentile.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  percentile_approx (colname,DOUBLE p)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  colname
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Name of the column to be sorted
                                                                                                                  
+
                                                                                                                  The elements in a column are of the DOUBLE type. If an element in a column is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  p
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  The value ranges from 0 to 1. The value is a float.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE or ARRAY type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the column name does not exist, an error is reported.
                                                                                                                  • If the value of p is NULL or outside the range of [0,1], an error is reported.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  Assume that the elements in the int_test column are 1, 2, 3, and 4 and they are of the INT type.
                                                                                                                  
+
                                                                                                                  The value 3 is returned.
                                                                                                                  
+
                                                                                                                  select percentile_approx(int_test,0.7) FROM int_test;
                                                                                                                  
+
                                                                                                                  The value 3 is returned.
                                                                                                                  
+
                                                                                                                  select percentile_approx(int_test,0.75) FROM int_test;
                                                                                                                  
+
                                                                                                                  The value 2 is returned.
                                                                                                                  
+
                                                                                                                  select percentile_approx(int_test,0.5) FROM int_test;
                                                                                                                  
+
                                                                                                                  The value [1,2,2,3,4] is returned.
                                                                                                                  
+
                                                                                                                  select percentile_approx (int_test,ARRAY(0.1,0.3,0.5,0.6,0.9)) FROM int_test;
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_pi.html b/docs/dli/sqlreference/dli_spark_pi.html
new file mode 100644
index 00000000..c9d95b00
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_pi.html
@@ -0,0 +1,18 @@
+
+
+
                                                                                                                  pi
                                                                                                                  
+
                                                                                                                  This function is used to return the value of π.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  pi()
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 3.141592653589793 is returned.
                                                                                                                  
+
                                                                                                                  select pi();
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_pmod.html b/docs/dli/sqlreference/dli_spark_pmod.html
new file mode 100644
index 00000000..dd5946dd
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_pmod.html
@@ -0,0 +1,61 @@
+
+
+
                                                                                                                  pmod
                                                                                                                  
+
                                                                                                                  This function is used to return the positive value of the remainder after division of x by y.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  pmod(INT a, INT b)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  b
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DECIMAL or INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of a or b is NULL, NULL is returned.
                                                                                                                  • If the value of b is 0, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2 is returned.
                                                                                                                  
+
                                                                                                                  select pmod(2,5);
                                                                                                                  
+
                                                                                                                  The value 3 is returned.
                                                                                                                  
+
                                                                                                                  select pmod (-2,5) (parse: -2=5* (-1)...3);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select pmod(5,0);
                                                                                                                  
+
                                                                                                                  The value 1 is returned.
                                                                                                                  
+
                                                                                                                  select pmod(5,2);
                                                                                                                  
+
                                                                                                                  The value 0.877 is returned.
                                                                                                                  
+
                                                                                                                  select pmod(5.123,2.123);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_positive.html b/docs/dli/sqlreference/dli_spark_positive.html
new file mode 100644
index 00000000..31b11a52
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_positive.html
@@ -0,0 +1,48 @@
+
+
+
                                                                                                                  positive
                                                                                                                  
+
                                                                                                                  This function is used to return the value of a.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  positive(INT a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DECIMAL, DOUBLE, or INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 3 is returned.
                                                                                                                  
+
                                                                                                                  SELECT positive(3);
                                                                                                                  
+
                                                                                                                  The value -3 is returned.
                                                                                                                  
+
                                                                                                                  SELECT positive(-3);
                                                                                                                  
+
                                                                                                                  The value 123 is returned.
                                                                                                                  
+
                                                                                                                  SELECT positive('123');
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_pow.html b/docs/dli/sqlreference/dli_spark_pow.html
new file mode 100644
index 00000000..05fe3908
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_pow.html
@@ -0,0 +1,60 @@
+
+
+
                                                                                                                  pow
                                                                                                                  
+
                                                                                                                  This function is used to calculate and return the pth power of a.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  pow(DOUBLE a, DOUBLE p), 
+power(DOUBLE a, DOUBLE p)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  p
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a or p is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 16 returned.
                                                                                                                  
+
                                                                                                                  select pow(2, 4);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select pow(2, null);
                                                                                                                  
+
                                                                                                                  The value 17.429460393524256 is returned.
                                                                                                                  
+
                                                                                                                  select pow(2, 4.123456);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_printf.html b/docs/dli/sqlreference/dli_spark_printf.html
new file mode 100644
index 00000000..d4eef30a
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_printf.html
@@ -0,0 +1,52 @@
+
+
+
                                                                                                                  printf
                                                                                                                  
+
                                                                                                                  This function is used to print the input in a specific format.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  printf(String format, Obj... args)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  format
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Output format
                                                                                                                  
+
                                                                                                                  Obj
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Other input parameters
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                  The value is returned after the parameters that filled in Obj are specified for format.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The string name: Zhang San, age: 20, gender: female, place of origin: city 1 is returned.
                                                                                                                  
+
                                                                                                                  SELECT printf('Name: %s, Age: %d, Gender: %s, Place of origin: %s', "Zhang San", 20, "Female", "City 1");
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_quarter.html b/docs/dli/sqlreference/dli_spark_quarter.html
new file mode 100644
index 00000000..50765da5
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_quarter.html
@@ -0,0 +1,52 @@
+
+
+
                                                                                                                  quarter
                                                                                                                  
+
                                                                                                                  This function is used to return the quarter of a date. The value ranges from 1 to 4.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  quarter(string date)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Date that needs to be processed
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 3 is returned.
                                                                                                                  
+
                                                                                                                  select quarter('2023-08-16 10:54:00');
                                                                                                                  
+
                                                                                                                  The value 3 is returned.
                                                                                                                  
+
                                                                                                                  select quarter('2023-08-16');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select quarter(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_radians.html b/docs/dli/sqlreference/dli_spark_radians.html
new file mode 100644
index 00000000..40ca7c8e
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_radians.html
@@ -0,0 +1,49 @@
+
+
+
                                                                                                                  radians
                                                                                                                  
+
                                                                                                                  This function is used to return the radian corresponding to an angle.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  radians(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 1.0471975511965976 is returned.
                                                                                                                  
+
                                                                                                                  select radians(60);
                                                                                                                  
+
                                                                                                                  The value 0 is returned.
                                                                                                                  
+
                                                                                                                  select radians(0);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select radians(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_rand.html b/docs/dli/sqlreference/dli_spark_rand.html
new file mode 100644
index 00000000..adc4a691
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_rand.html
@@ -0,0 +1,46 @@
+
+
+
                                                                                                                  rand
                                                                                                                  
+
                                                                                                                  This function is used to return an evenly distributed random number that is greater than or equal to 0 and less than 1.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  rand(INT seed)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  seed
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  INT
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If this parameter is specified, a stable random number sequence is obtained within the same running environment.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 0.3668915240363728 is returned.
                                                                                                                  
+
                                                                                                                  select rand();
                                                                                                                  
+
                                                                                                                  The value 0.25738143505962285 is returned.
                                                                                                                  
+
                                                                                                                  select rand(3);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_rank.html b/docs/dli/sqlreference/dli_spark_rank.html
new file mode 100644
index 00000000..9ccf19e2
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_rank.html
@@ -0,0 +1,83 @@
+
+
+
                                                                                                                  rank
                                                                                                                  
+
                                                                                                                  This function is used to return the rank of a value in a set of values. When multiple values share the same rank, the next rank in the sequence is not consecutive.
                                                                                                                  
+
                                                                                                                  Restrictions
                                                                                                                  The restrictions on using window functions are as follows:
                                                                                                                  
+
                                                                                                                  • Window functions can be used only in select statements.
                                                                                                                  • Window functions and aggregate functions cannot be nested in window functions.
                                                                                                                  • Window functions cannot be used together with aggregate functions of the same level.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  rank() over ([partition_clause] [orderby_clause])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  partition_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Partition. Rows with the same value in partition columns are considered to be in the same window.
                                                                                                                  
+
                                                                                                                  orderby_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  It is used to specify how data is sorted in a window.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  To help you understand how to use functions, this example provides source data and function examples based on the source data. Run the following command to create the logs table and add data:
                                                                                                                  CREATE TABLE logs (
+cookieid string,
+createtime string,
+pv INT
+) ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' 
+stored as textfile;
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Adds the following data:
                                                                                                                  
+
                                                                                                                  cookie1 2015-04-10 1
+cookie1 2015-04-11 5
+cookie1 2015-04-12 7
+cookie1 2015-04-13 3
+cookie1 2015-04-14 2
+cookie1 2015-04-15 4
+cookie1 2015-04-16 4
+cookie2 2015-04-10 2
+cookie2 2015-04-11 3
+cookie2 2015-04-12 5
+cookie2 2015-04-13 6
+cookie2 2015-04-14 3
+cookie2 2015-04-15 9
+cookie2 2015-04-16 7
                                                                                                                  
+
                                                                                                                  Example: Groups all records by cookieid, sorts them by pv in descending order, and returns the sequence number of each row in the group. An example command is as follows:
                                                                                                                  
+
                                                                                                                  select cookieid, createtime, pv,
+       rank() over(partition by cookieid order by pv desc) as rank
+from logs
+where cookieid = 'cookie1';
+-- Result:
+cookie1 2015-04-12 7 1
+cookie1 2015-04-11 5 2
+cookie1 2015-04-16 4 3 (third in parallel)
+cookie1 2015-04-15 4 3
+cookie1 2015-04-13 3 5 (skip 4 and start from 5)
+cookie1 2015-04-14 2 6
+cookie1 2015-04-10 1 7
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Window Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_regexp_count.html b/docs/dli/sqlreference/dli_spark_regexp_count.html
new file mode 100644
index 00000000..c76387ac
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_regexp_count.html
@@ -0,0 +1,66 @@
+
+
+
                                                                                                                  regexp_count
                                                                                                                  
+
                                                                                                                  This function is used to return the number of substrings that match a specified pattern in the source, starting from the start_position position.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  regexp_count(string <source>, string <pattern>[, bigint <start_position>])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  source
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be searched for. For other types, an error is reported.
                                                                                                                  
+
                                                                                                                  pattern
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Constant or regular expression of the STRING type. Pattern to be matched. If the value of this parameter is an empty string or of other types, an error is reported.
                                                                                                                  
+
                                                                                                                  start_position
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Constant of the BIGINT type. The value must be greater than 0. If the value is of another type or is less than or equal to 0, an error is reported. If this parameter is not specified, the default value 1 is used, indicating that the matching starts from the first character of source.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If no match is found, 0 is returned.
                                                                                                                  • If the value of source or pattern is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 4 is returned.
                                                                                                                  
+
                                                                                                                  select regexp_count('ab0a1a2b3c', '[0-9]');
                                                                                                                  
+
                                                                                                                  The value 3 is returned.
                                                                                                                  
+
                                                                                                                  select regexp_count('ab0a1a2b3c', '[0-9]', 4);
                                                                                                                  
+
                                                                                                                  The value null is returned.
                                                                                                                  
+
                                                                                                                  select regexp_count('ab0a1a2b3c', null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_regexp_extract.html b/docs/dli/sqlreference/dli_spark_regexp_extract.html
new file mode 100644
index 00000000..bd500218
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_regexp_extract.html
@@ -0,0 +1,70 @@
+
+
+
                                                                                                                  regexp_extract
                                                                                                                  
+
                                                                                                                  This function is used to match the string source based on the pattern grouping rule and return the string content that matches groupid.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  regexp_extract(string <source>, string <pattern>[, bigint <groupid>])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  source
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be split
                                                                                                                  
+
                                                                                                                  pattern
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Constant or regular expression of the STRING type. Pattern to be matched.
                                                                                                                  
+
                                                                                                                  groupid
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Constant of the BIGINT type. The value must be greater than or equal to 0.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of pattern is an empty string or there is no group in pattern, an error is reported.
                                                                                                                  • If the value of groupid is not of the BIGINT type or is less than 0, an error is reported.
                                                                                                                  • If this parameter is not specified, the default value 1 is used, indicating that the first group is returned.
                                                                                                                  • If the value of groupid is 0, the substring that meets the entire pattern is returned.
                                                                                                                  • If the value of source, pattern, or groupid is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  Splits basketball by bas(.*?)(ball). The value ket is returned.
                                                                                                                  
+
                                                                                                                  select regexp_extract('basketball', 'bas(.*?)(ball)');
                                                                                                                  
+
                                                                                                                  The value basketball is returned.
                                                                                                                  
+
                                                                                                                  select regexp_extract('basketball', 'bas(.*?)(ball)',0);
                                                                                                                  
+
                                                                                                                  The value 99 is returned. When submitting SQL statements for regular expression calculation on DLI, two backslashes (\) are used as escape characters.
                                                                                                                  
+
                                                                                                                  select regexp_extract('8d99d8', '8d(\\d+)d8');
                                                                                                                  
+
                                                                                                                  The value [Hello] is returned.
                                                                                                                  
+
                                                                                                                  select regexp_extract('[Hello] hello', '([^\\x{00}-\\x{ff}]+)');
                                                                                                                  
+
                                                                                                                  The value Hello is returned.
                                                                                                                  
+
                                                                                                                  select regexp_extract('[Hello] hello', '([\\x{4e00}-\\x{9fa5}]+)');
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_regexp_instr.html b/docs/dli/sqlreference/dli_spark_regexp_instr.html
new file mode 100644
index 00000000..d6ecc140
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_regexp_instr.html
@@ -0,0 +1,82 @@
+
+
+
                                                                                                                  regexp_instr
                                                                                                                  
+
                                                                                                                  This function is used to return the start or end position of the substring that matches a specified pattern for the occurrence time, starting from start_position in the string source.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  regexp_instr(string <source>, string <pattern>[,bigint <start_position>[, bigint <occurrence>[, bigint <return_option>]]])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  source
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Source string
                                                                                                                  
+
                                                                                                                  pattern
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Constant or regular expression of the STRING type. Pattern to be matched. If the value of this parameter is an empty string, an error is reported.
                                                                                                                  
+
                                                                                                                  start_position
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Constant of the BIGINT type. Start position of the search. If it is not specified, the default value 1 is used.
                                                                                                                  
+
                                                                                                                  occurrence
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Constant of the BIGINT type. It indicates the specified number of matching times. If this parameter is not specified, the default value 1 is used, indicating that the first occurrence position is searched.
                                                                                                                  
+
                                                                                                                  return_option
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Constant of the BIGINT type. This parameter indicates the location to be returned. The value can be 0 or 1. If this parameter is not specified, the default value 0 is used. If this parameter is set to a value of another type or a value that is not allowed, an error message is returned. The value 0 indicates that the start position of the match is returned, and the value 1 indicates that the end position of the match is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type. return_option indicates the start or end position of the matched substring in source.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of pattern is an empty string, an error is reported.
                                                                                                                  • If the value of start_position or occurrence is not of the BIGINT type or is less than or equal to 0, an error is reported.
                                                                                                                  • If the value of source, pattern, start_position, occurrence, or return_option is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 6 is returned.
                                                                                                                  
+
                                                                                                                  select regexp_instr('a1b2c3d4', '[0-9]', 3, 2);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select regexp_instr('a1b2c3d4', null, 3, 2);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_regexp_replace.html b/docs/dli/sqlreference/dli_spark_regexp_replace.html
new file mode 100644
index 00000000..a2683e55
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_regexp_replace.html
@@ -0,0 +1,91 @@
+
+
+
                                                                                                                  regexp_replace
                                                                                                                  
+
                                                                                                                  This function has slight variations in its functionality depending on the version of Spark being used.
                                                                                                                  • For Spark 2.4.5 or earlier: Replaces the substring that matches pattern in the string source with the specified string replace_string and returns the result string.
                                                                                                                  • For Spark 3.3.1: Replaces the substring that matches the pattern for the occurrence time in the source string and the substring that matches the pattern later with the specified string replace_string and returns the result string.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Similar function: regexp_replace1. The regexp_replace1 function is used to replace the substring that matches pattern for the occurrence time in the source string with the specified string replace_string and return the result string. However, the egexp_replace1 function applies only to Spark 2.4.5 or earlier.
                                                                                                                  
+
                                                                                                                  The regexp_replace1 function is applicable to Spark 2.4.5. It supports specifying the occurrence parameter, whereas the regexp_replace function does not support it.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  • Spark 2.4.5 or earlier
                                                                                                                    regexp_replace(string <source>, string <pattern>, string <replace_string>)
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  • Spark 3.1.1
                                                                                                                    regexp_replace(string <source>, string <pattern>, string <replace_string>[, bigint <occurrence>])
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  source
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be replaced
                                                                                                                  
+
                                                                                                                  pattern
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Constant or regular expression of the STRING type. Pattern to be matched. For more guidelines on writing regular expressions, refer to the regular expression specifications. If the value of this parameter is an empty string, an error is reported.
                                                                                                                  
+
                                                                                                                  replace_string
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String that replaces the one matching the pattern parameter
                                                                                                                  
+
                                                                                                                  occurrence
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  The value must be greater than or equal to 1, indicating that the string that is matched for the occurrence time is replaced with replace_string. When the value is 1, all matched substrings are replaced. If the value is of another type or is less than 1, an error is reported. The default value is 1.
                                                                                                                  
+
                                                                                                                   NOTE: 
                                                                                                                  This parameter is available only when Spark 3.1.1 is used.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of pattern is an empty string or there is no group in pattern, an error is reported.
                                                                                                                  • If a group that does not exist is referenced, the group is not replaced.
                                                                                                                  • If the value of replace_string is NULL and the pattern is matched, NULL is returned.
                                                                                                                  • If the value of replace_string is NULL but the pattern is not matched, NULL is returned.
                                                                                                                  • If the value of source, pattern, or occurrence is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • For Spark 2.4.5 or earlier
                                                                                                                    The value num-num is returned.
                                                                                                                    
+
                                                                                                                    SELECT regexp_replace('100-200', '(\\d+)', 'num'); 
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  • For Spark 3.1.1
                                                                                                                    The value 2222 is returned.
                                                                                                                    
+
                                                                                                                    select regexp_replace('abcd', '[a-z]', '2');
                                                                                                                    
+
                                                                                                                    The value 2222 is returned.
                                                                                                                    
+
                                                                                                                    select regexp_replace('abcd', '[a-z]', '2', 1);
                                                                                                                    
+
                                                                                                                    The value a222 is returned.
                                                                                                                    
+
                                                                                                                    select regexp_replace('abcd', '[a-z]', '2', 2);
                                                                                                                    
+
                                                                                                                    The value ab22 is returned.
                                                                                                                    
+
                                                                                                                    select regexp_replace('abcd', '[a-z]', '2', 3);
                                                                                                                    
+
                                                                                                                    The value abc2 is returned.
                                                                                                                    
+
                                                                                                                    select regexp_replace('abcd', '[a-z]', '2', 4);
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_regexp_replace1.html b/docs/dli/sqlreference/dli_spark_regexp_replace1.html
new file mode 100644
index 00000000..a91a8d71
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_regexp_replace1.html
@@ -0,0 +1,82 @@
+
+
+
                                                                                                                  regexp_replace1
                                                                                                                  
+
                                                                                                                  This function is used to replace the substring that matches pattern for the occurrence time in the source string with the specified string replace_string and return the result string.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  This function applies only to Spark 2.4.5 or earlier.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Similar function: regexp_replace. The regexp_replace function has slightly different functionalities for different versions of Spark. For details, see regexp_replace.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  regexp_replace1(string <source>, string <pattern>, string <replace_string>[, bigint <occurrence>])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  source
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be replaced
                                                                                                                  
+
                                                                                                                  pattern
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Constant or regular expression of the STRING type. Pattern to be matched. For more guidelines on writing regular expressions, refer to the regular expression specifications. If the value of this parameter is an empty string, an error is reported.
                                                                                                                  
+
                                                                                                                  replace_string
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String that replaces the one matching the pattern parameter
                                                                                                                  
+
                                                                                                                  occurrence
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  The value must be greater than or equal to 1, indicating that the string that is matched for the occurrence time is replaced with replace_string. When the value is 1, all matched substrings are replaced. If the value is of another type or is less than 1, an error is reported. The default value is 1.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If a group that does not exist is referenced, the group is not replaced.
                                                                                                                  • If the value of replace_string is NULL and the pattern is matched, NULL is returned.
                                                                                                                  • If the value of replace_string is NULL but the pattern is not matched, NULL is returned.
                                                                                                                  • If the value of source, pattern, or occurrence is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2222 is returned.
                                                                                                                  
+
                                                                                                                  select regexp_replace('abcd', '[a-z]', '2');
                                                                                                                  
+
                                                                                                                  The value 2bcd is returned.
                                                                                                                  
+
                                                                                                                  select regexp_replace('abcd', '[a-z]', '2', 1);
                                                                                                                  
+
                                                                                                                  The value a2cd is returned.
                                                                                                                  
+
                                                                                                                  select regexp_replace('abcd', '[a-z]', '2', 2);
                                                                                                                  
+
                                                                                                                  The value ab2d is returned.
                                                                                                                  
+
                                                                                                                  select regexp_replace('abcd', '[a-z]', '2', 3);
                                                                                                                  
+
                                                                                                                  The value abc2 is returned.
                                                                                                                  
+
                                                                                                                  select regexp_replace('abcd', '[a-z]', '2', 4);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_regexp_substr.html b/docs/dli/sqlreference/dli_spark_regexp_substr.html
new file mode 100644
index 00000000..6eea715b
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_regexp_substr.html
@@ -0,0 +1,77 @@
+
+
+
                                                                                                                  regexp_substr
                                                                                                                  
+
                                                                                                                  This function is used to return the substring that matches a specified pattern for the occurrence time, starting from start_position in the string source.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  regexp_substr(string <source>, string <pattern>[, bigint <start_position>[, bigint <occurrence>]])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  source
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be searched for
                                                                                                                  
+
                                                                                                                  pattern
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Constant or regular expression of the STRING type. Pattern to be matched.
                                                                                                                  
+
                                                                                                                  start_position
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Start position. The value must be greater than 0. If this parameter is not specified, the default value 1 is used, indicating that the matching starts from the first character of source.
                                                                                                                  
+
                                                                                                                  occurrence
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  The value is a constant of the BIGINT type, which must be greater than 0. If it is not specified, the default value 1 is used, indicating that the substring matched for the first time is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of pattern is an empty string, an error is reported.
                                                                                                                  • If no match is found, NULL is returned.
                                                                                                                  • If the value of start_position or occurrence is not of the BIGINT type or is less than or equal to 0, an error is reported.
                                                                                                                  • If the value of source, pattern, start_position, occurrence, or return_option is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value a is returned.
                                                                                                                  
+
                                                                                                                  select regexp_substr('a1b2c3', '[a-z]');
                                                                                                                  
+
                                                                                                                  The value b is returned.
                                                                                                                  
+
                                                                                                                  select regexp_substr('a1b2c3', '[a-z]', 2, 1);
                                                                                                                  
+
                                                                                                                  The value c is returned.
                                                                                                                  
+
                                                                                                                  select regexp_substr('a1b2c3', '[a-z]', 2, 2);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select regexp_substr('a1b2c3', null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_repeat.html b/docs/dli/sqlreference/dli_spark_repeat.html
new file mode 100644
index 00000000..090942f2
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_repeat.html
@@ -0,0 +1,53 @@
+
+
+
                                                                                                                  repeat
                                                                                                                  
+
                                                                                                                  This function is used to return the string after str is repeated for n times.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  repeat(string <str>, bigint <n>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  If the value is of the BIGINT, DOUBLE, DECIMAL, or DATETIME type, the value is implicitly converted to the STRING type for calculation.
                                                                                                                  
+
                                                                                                                  n
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Number used for repetition
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of str is not of the STRING, BIGINT, DOUBLE, DECIMAL, or DATETIME type, an error is reported.
                                                                                                                  • If the value of n is empty, an error is reported.
                                                                                                                  • If the value of str or n is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 123123 is returned after the string 123 is repeated twice.
                                                                                                                  
+
                                                                                                                  SELECT repeat('123', 2);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_replace.html b/docs/dli/sqlreference/dli_spark_replace.html
new file mode 100644
index 00000000..e02483cb
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_replace.html
@@ -0,0 +1,65 @@
+
+
+
                                                                                                                  replace
                                                                                                                  
+
                                                                                                                  This function is used to replace the part in a specified string that is the same as the string old with the string new and return the result.
                                                                                                                  
+
                                                                                                                  If the string has no same characters as the string old, str is returned.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  replace(string <str>, string <old>, string <new>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be replaced
                                                                                                                  
+
                                                                                                                  old
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be compared
                                                                                                                  
+
                                                                                                                  new
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String after replacement
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of any input parameter is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value AA123AA is returned.
                                                                                                                  
+
                                                                                                                  select replace('abc123abc','abc','AA');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select replace('abc123abc',null,'AA');
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_reverse.html b/docs/dli/sqlreference/dli_spark_reverse.html
new file mode 100644
index 00000000..b9bcfe01
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_reverse.html
@@ -0,0 +1,46 @@
+
+
+
                                                                                                                  reverse
                                                                                                                  
+
                                                                                                                  This function is used to return a string in reverse order.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  reverse(string <str>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  If the value is of the BIGINT, DOUBLE, DECIMAL, or DATETIME type, the value is implicitly converted to the STRING type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of str is not of the STRING, BIGINT, DOUBLE, DECIMAL, or DATETIME type, an error is reported.
                                                                                                                  • If the value of str is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value LQS krapS is returned.
                                                                                                                  
+
                                                                                                                  SELECT reverse('Spark SQL'); 
                                                                                                                  
+
                                                                                                                  The value [3,4,1,2] is returned.
                                                                                                                  
+
                                                                                                                  SELECT reverse(array(2, 1, 4, 3));  
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_round.html b/docs/dli/sqlreference/dli_spark_round.html
new file mode 100644
index 00000000..c783d5e5
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_round.html
@@ -0,0 +1,66 @@
+
+
+
                                                                                                                  round
                                                                                                                  
+
                                                                                                                  This function is used to calculate the rounded value of a up to d decimal places.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  round(DOUBLE a, INT d)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  It indicates the value to be rounded off.
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  d
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  INT
                                                                                                                  
+
                                                                                                                  The default value is 0.
                                                                                                                  
+
                                                                                                                  It indicates the number of decimal places to which the value needs to be rounded.
                                                                                                                  
+
                                                                                                                  If the value is not of the INT type, the system will implicitly convert it to the INT type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of d is negative, an error is reported.
                                                                                                                  • If the value of a or d is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 123.0 is returned.
                                                                                                                  
+
                                                                                                                  select round(123.321);
                                                                                                                  
+
                                                                                                                  The value 123.4 is returned.
                                                                                                                  
+
                                                                                                                  select round(123.396, 1);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select round(null);
                                                                                                                  
+
                                                                                                                  The value 123.321 is returned.
                                                                                                                  
+
                                                                                                                  select round(123.321, 4);
                                                                                                                  
+
                                                                                                                  The value 123.3 is returned.
                                                                                                                  
+
                                                                                                                  select round(123.321,1.33333);
                                                                                                                  
+
                                                                                                                  The value 123.3 is returned.
                                                                                                                  
+
                                                                                                                  select round(123.321,1.33333);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_row_number.html b/docs/dli/sqlreference/dli_spark_row_number.html
new file mode 100644
index 00000000..0b0710e3
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_row_number.html
@@ -0,0 +1,90 @@
+
+
+
                                                                                                                  row_number
                                                                                                                  
+
                                                                                                                  This function is used to return the row number, starting from 1 and increasing incrementally.
                                                                                                                  
+
                                                                                                                  Restrictions
                                                                                                                  The restrictions on using window functions are as follows:
                                                                                                                  
+
                                                                                                                  • Window functions can be used only in select statements.
                                                                                                                  • Window functions and aggregate functions cannot be nested in window functions.
                                                                                                                  • Window functions cannot be used together with aggregate functions of the same level.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  row_number() over([partition_clause] [orderby_clause])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  partition_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Partition. Rows with the same value in partition columns are considered to be in the same window.
                                                                                                                  
+
                                                                                                                  orderby_clause
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  It is used to specify how data is sorted in a window.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  To help you understand how to use functions, this example provides source data and function examples based on the source data. Run the following command to create the logs table and add data:
                                                                                                                  CREATE TABLE logs (
+cookieid string,
+createtime string,
+pv INT
+) ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' 
+stored as textfile;
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Adds the following data:
                                                                                                                  
+
                                                                                                                  cookie1 2015-04-10 1
+cookie1 2015-04-11 5
+cookie1 2015-04-12 7
+cookie1 2015-04-13 3
+cookie1 2015-04-14 2
+cookie1 2015-04-15 4
+cookie1 2015-04-16 4
+cookie2 2015-04-10 2
+cookie2 2015-04-11 3
+cookie2 2015-04-12 5
+cookie2 2015-04-13 6
+cookie2 2015-04-14 3
+cookie2 2015-04-15 9
+cookie2 2015-04-16 7
                                                                                                                  
+
                                                                                                                  Example: Groups all records by cookieid, sorts them by pv in descending order, and returns the sequence number of each row in the group. An example command is as follows:
                                                                                                                  
+
                                                                                                                  select cookieid, createtime, pv,
+       row_number() over (partition by cookieid order by pv desc) as index
+from logs;
+
+-- Returned result:
+cookie1 2015-04-12 7 1
+cookie1 2015-04-11 5 2
+cookie1 2015-04-16 4 3
+cookie1 2015-04-15 4 4
+cookie1 2015-04-13 3 5
+cookie1 2015-04-14 2 6
+cookie1 2015-04-10 1 7
+cookie2 2015-04-15 9 1
+cookie2 2015-04-16 7 2
+cookie2 2015-04-13 6 3
+cookie2 2015-04-12 5 4
+cookie2 2015-04-11 3 5
+cookie2 2015-04-14 3 6
+cookie2 2015-04-10 2 7
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Window Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_rpad.html b/docs/dli/sqlreference/dli_spark_rpad.html
new file mode 100644
index 00000000..b159528a
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_rpad.html
@@ -0,0 +1,64 @@
+
+
+
                                                                                                                  rpad
                                                                                                                  
+
                                                                                                                  This function is used to right pad str1 with str2 to the specified length.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  rpad(string <str1>, int <length>, string <str2>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str1
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be right-padded
                                                                                                                  
+
                                                                                                                  length
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  INT
                                                                                                                  
+
                                                                                                                  Number of digits to be padded to the right
                                                                                                                  
+
                                                                                                                  str2
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String used for padding
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of length is smaller than the number of digits in str1, the string whose length is truncated from the left of str1 is returned.
                                                                                                                  • If the value of length is 0, an empty string is returned.
                                                                                                                  • If there is no input parameter or the value of any input parameter is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value hi??? is returned.
                                                                                                                  
+
                                                                                                                  SELECT rpad('hi', 5, '??');
                                                                                                                  
+
                                                                                                                  The value h is returned.
                                                                                                                  
+
                                                                                                                  SELECT rpad('hi', 1, '??');
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_rtrim.html b/docs/dli/sqlreference/dli_spark_rtrim.html
new file mode 100644
index 00000000..bbee8c35
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_rtrim.html
@@ -0,0 +1,68 @@
+
+
+
                                                                                                                  rtrim
                                                                                                                  
+
                                                                                                                  This function is used to remove characters from the right of str.
                                                                                                                  
+
                                                                                                                  • If trimChars is not specified, spaces are removed by default.
                                                                                                                  • If trimChars is specified, the function removes the longest possible substring from the right end of str that consists of characters in the trimChars set.
                                                                                                                  
+
                                                                                                                  Similar functions:
                                                                                                                  
+
                                                                                                                  • ltrim. This function is used to remove characters from the left of str.
                                                                                                                  • trim. This function is used to remove characters from the left and right of str.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  rtrim([<trimChars>, ]string <str>)
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  rtrim(trailing [<trimChars>] from <str>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String from which characters on the right are to be removed. If the value is of the BIGINT, DECIMAL, DOUBLE, or DATETIME type, the value is implicitly converted to the STRING type for calculation.
                                                                                                                  
+
                                                                                                                  trimChars
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Characters to be removed
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of str is not of the STRING, BIGINT, DOUBLE, DECIMAL, or DATETIME type, an error is reported.
                                                                                                                  • If the value of str or trimChars is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Removes spaces on the right of the string yxabcxx. An example command is as follows:
                                                                                                                    The value yxabcxx is returned.
                                                                                                                    
+
                                                                                                                    select rtrim('yxabcxx     '); 
                                                                                                                    
+
                                                                                                                    It is equivalent to the following statement:
                                                                                                                    
+
                                                                                                                    select trim(trailing from ' yxabcxx ');
                                                                                                                    
+
                                                                                                                  • Removes all substrings from the right end of the string yxabcxx that consist of characters in the set xy.
                                                                                                                    The function returns yxabc, as any substring starting with x or y from the right end is removed.
                                                                                                                    
+
                                                                                                                    select rtrim('xy', 'yxabcxx'); 
                                                                                                                    
+
                                                                                                                    It is equivalent to the following statement:
                                                                                                                    
+
                                                                                                                    select trim(trailing 'xy' from 'yxabcxx');
                                                                                                                    
+
                                                                                                                  • The value of the input parameter is NULL. An example command is as follows:
                                                                                                                    The value NULL is returned.
                                                                                                                    
+
                                                                                                                    select rtrim(null); 
+select ltrim('yxabcxx', 'null');
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_second.html b/docs/dli/sqlreference/dli_spark_second.html
new file mode 100644
index 00000000..2efc6f7a
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_second.html
@@ -0,0 +1,54 @@
+
+
+
                                                                                                                  second
                                                                                                                  
+
                                                                                                                  This function is used to return the second (from 0 to 59) of a specified time.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  second(string date)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Date that needs to be processed
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 36 is returned.
                                                                                                                  
+
                                                                                                                  select second('2023-08-16 10:54:36');
                                                                                                                  
+
                                                                                                                  The value 36 is returned.
                                                                                                                  
+
                                                                                                                  select second('10:54:36');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                   select second('20230816105436');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select second(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_shiftleft.html b/docs/dli/sqlreference/dli_spark_shiftleft.html
new file mode 100644
index 00000000..b155fe20
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_shiftleft.html
@@ -0,0 +1,61 @@
+
+
+
                                                                                                                  shiftleft
                                                                                                                  
+
                                                                                                                  This function is used to perform a signed bitwise left shift. It takes the binary number a and shifts it b positions to the left.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  shiftleft(BIGINT a, BIGINT b)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the BIGINT type, the system will implicitly convert it to the BIGINT type for calculation.
                                                                                                                  
+
                                                                                                                  b
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the BIGINT type, the system will implicitly convert it to the BIGINT type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a or b is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 8 is returned.
                                                                                                                  
+
                                                                                                                  select shiftleft(1,3);
                                                                                                                  
+
                                                                                                                  The value 48 is returned.
                                                                                                                  
+
                                                                                                                  select shiftleft(6,3);
                                                                                                                  
+
                                                                                                                  The value 48 is returned.
                                                                                                                  
+
                                                                                                                  select shiftleft(6.123456,3.123456);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select shiftleft(null,3);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_shiftright.html b/docs/dli/sqlreference/dli_spark_shiftright.html
new file mode 100644
index 00000000..511f05d1
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_shiftright.html
@@ -0,0 +1,61 @@
+
+
+
                                                                                                                  shiftright
                                                                                                                  
+
                                                                                                                  This function is used to perform a signed bitwise right shift. It takes the binary number a and shifts it b positions to the right.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  shiftright(BIGINT a, BIGINT b)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the BIGINT type, the system will implicitly convert it to the BIGINT type for calculation.
                                                                                                                  
+
                                                                                                                  b
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the BIGINT type, the system will implicitly convert it to the BIGINT type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a or b is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2 is returned.
                                                                                                                  
+
                                                                                                                  select shiftright(16,3);
                                                                                                                  
+
                                                                                                                  The value 4 is returned.
                                                                                                                  
+
                                                                                                                  select shiftright(36,3);
                                                                                                                  
+
                                                                                                                  The value 4 is returned.
                                                                                                                  
+
                                                                                                                  select shiftright(36.123456,3.123456);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select shiftright(null,3);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_shiftrightunsigned.html b/docs/dli/sqlreference/dli_spark_shiftrightunsigned.html
new file mode 100644
index 00000000..f4e560bb
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_shiftrightunsigned.html
@@ -0,0 +1,61 @@
+
+
+
                                                                                                                  shiftrightunsigned
                                                                                                                  
+
                                                                                                                  This function is used to perform an unsigned bitwise right shift. It takes the binary number a and shifts it b positions to the right.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  shiftrightunsigned(BIGINT a, BIGINT b)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the BIGINT type, the system will implicitly convert it to the BIGINT type for calculation.
                                                                                                                  
+
                                                                                                                  b
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the BIGINT type, the system will implicitly convert it to the BIGINT type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a or b is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2 is returned.
                                                                                                                  
+
                                                                                                                  select shiftrightunsigned(16,3);
                                                                                                                  
+
                                                                                                                  The value 536870910 is returned.
                                                                                                                  
+
                                                                                                                  select shiftrightunsigned(-16,3);
                                                                                                                  
+
                                                                                                                  The value 2 is returned.
                                                                                                                  
+
                                                                                                                  select shiftrightunsigned(16.123456,3.123456);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select shiftrightunsigned(null,3);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_sign.html b/docs/dli/sqlreference/dli_spark_sign.html
new file mode 100644
index 00000000..5c8e7847
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_sign.html
@@ -0,0 +1,52 @@
+
+
+
                                                                                                                  sign
                                                                                                                  
+
                                                                                                                  This function is used to return the positive and negative signs corresponding to a.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  sign(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of a is a positive number, 1 is returned.
                                                                                                                  • If the value of a is a negative number, -1 is returned.
                                                                                                                  • If the value of a is 0, 0 is returned.
                                                                                                                  • If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value -1 is returned.
                                                                                                                  
+
                                                                                                                  select sign(-3);
                                                                                                                  
+
                                                                                                                  The value 1 is returned.
                                                                                                                  
+
                                                                                                                  select sign(3);
                                                                                                                  
+
                                                                                                                  The value 0 is returned.
                                                                                                                  
+
                                                                                                                  select sign(0);
                                                                                                                  
+
                                                                                                                  The value 1 is returned.
                                                                                                                  
+
                                                                                                                  select sign(3.1415926);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select sign(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_sin.html b/docs/dli/sqlreference/dli_spark_sin.html
new file mode 100644
index 00000000..034207dc
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_sin.html
@@ -0,0 +1,47 @@
+
+
+
                                                                                                                  sin
                                                                                                                  
+
                                                                                                                  This function is used to return the sine value of a, with input in radians.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  sin(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 1 is returned.
                                                                                                                  
+
                                                                                                                  select sin(pi()/2);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select sin(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_soundex.html b/docs/dli/sqlreference/dli_spark_soundex.html
new file mode 100644
index 00000000..8409126a
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_soundex.html
@@ -0,0 +1,44 @@
+
+
+
                                                                                                                  soundex
                                                                                                                  
+
                                                                                                                  This function is used to return the soundex string from str, for example, soundex('Miller') = M460.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  soundex(string <str>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be converted
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of str is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value M460 is returned.
                                                                                                                  
+
                                                                                                                  SELECT soundex('Miller');
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_space.html b/docs/dli/sqlreference/dli_spark_space.html
new file mode 100644
index 00000000..699a8efa
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_space.html
@@ -0,0 +1,44 @@
+
+
+
                                                                                                                  space
                                                                                                                  
+
                                                                                                                  This function is used to return a specified number of spaces.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  space(bigint <n>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  n
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Number of spaces
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of n is empty, an error is reported.
                                                                                                                  • If the value of n is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 6 is returned.
                                                                                                                  
+
                                                                                                                  select length(space(6));
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_split_part.html b/docs/dli/sqlreference/dli_spark_split_part.html
new file mode 100644
index 00000000..6f8e750d
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_split_part.html
@@ -0,0 +1,85 @@
+
+
+
                                                                                                                  split_part
                                                                                                                  
+
                                                                                                                  This function is used to split a specified string based on a specified separator and return a substring from the start to end position.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  split_part(string <str>, string <separator>, bigint <start>[, bigint <end>])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be split
                                                                                                                  
+
                                                                                                                  separator
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Constant of the STRING type. Separator used for splitting. The value can be a character or a string.
                                                                                                                  
+
                                                                                                                  start
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Constant of the BIGINT type. The value must be greater than 0. Start number of the returned part, starting from 1.
                                                                                                                  
+
                                                                                                                  end
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Constant of the BIGINT type. The value must be greater than or equal to the value of start. End number of the returned part and can be omitted. The default value indicates that the value is the same as that of start, and the part specified by start is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of start is greater than the actual number of segments after splitting, for example, if there are four segments after string splitting and the value of start is greater than 4, an empty string is returned.
                                                                                                                  • If separator does not exist in str and start is set to 1, the entire str is returned. If the value of str is an empty string, an empty string is output.
                                                                                                                  • If the value of separator is an empty string, the original string str is returned.
                                                                                                                  • If the value of end is greater than the number of segments, the substring starting from start is returned.
                                                                                                                  • If the value of str is not of the STRING, BIGINT, DOUBLE, DECIMAL, or DATETIME type, an error is reported.
                                                                                                                  • If the value of start or end is not a constant of the BIGINT type, an error is reported.
                                                                                                                  • If the value of any parameter except separator is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value aa is returned.
                                                                                                                  
+
                                                                                                                  select split_part('aa,bb,cc,dd', ',', 1); 
                                                                                                                  
+
                                                                                                                  The value aa,bb is returned.
                                                                                                                  
+
                                                                                                                  select split_part('aa,bb,cc,dd', ',', 1, 2);
                                                                                                                  
+
                                                                                                                  An empty string is returned.
                                                                                                                  
+
                                                                                                                  select split_part('aa,bb,cc,dd', ',', 10);
                                                                                                                  
+
                                                                                                                  The value aa,bb,cc,dd is returned.
                                                                                                                  
+
                                                                                                                  select split_part('aa,bb,cc,dd', ':', 1);
                                                                                                                  
+
                                                                                                                  An empty string is returned.
                                                                                                                  
+
                                                                                                                  select split_part('aa,bb,cc,dd', ':', 2);
                                                                                                                  
+
                                                                                                                  The value aa,bb,cc,dd is returned.
                                                                                                                  
+
                                                                                                                  select split_part('aa,bb,cc,dd', '', 1);
                                                                                                                  
+
                                                                                                                  The value bb,cc,dd is returned.
                                                                                                                  
+
                                                                                                                  select split_part('aa,bb,cc,dd', ',', 2, 6);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select split_part('aa,bb,cc,dd', ',', null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_sqrt.html b/docs/dli/sqlreference/dli_spark_sqrt.html
new file mode 100644
index 00000000..a4e73296
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_sqrt.html
@@ -0,0 +1,49 @@
+
+
+
                                                                                                                  sqrt
                                                                                                                  
+
                                                                                                                  This function is used to return the square root of a value.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  sqrt(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2.8284271247461903 is returned.
                                                                                                                  
+
                                                                                                                  select sqrt(8);
                                                                                                                  
+
                                                                                                                  The value 4 is returned.
                                                                                                                  
+
                                                                                                                  select sqrt(16);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select sqrt(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_stddev_pop.html b/docs/dli/sqlreference/dli_spark_stddev_pop.html
new file mode 100644
index 00000000..36d84790
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_stddev_pop.html
@@ -0,0 +1,48 @@
+
+
+
                                                                                                                  stddev_pop
                                                                                                                  
+
                                                                                                                  This function is used to return the deviation of a specified column.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  stddev_pop(col)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  col
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Columns with a data type of numeric. If the value is of any other type, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Calculates the deviation of all offering inventories (items). An example command is as follows:
                                                                                                                    select stddev_pop(items) from warehouse; 
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    _c0        
+1.342355   
                                                                                                                    
+
                                                                                                                  • When used with group by, it groups all offerings by warehouse (warehourseId) and returns the deviation of the offering inventory (items) in the same group. An example command is as follows:
                                                                                                                    select warehourseId, stddev_pop(items) from warehourse group by warehourseId; 
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    warehouseId _c1        
+city1    1.23124   
+city2    1.23344   
+city3    1.43425   
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Aggregate Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_stddev_samp.html b/docs/dli/sqlreference/dli_spark_stddev_samp.html
new file mode 100644
index 00000000..3619013d
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_stddev_samp.html
@@ -0,0 +1,47 @@
+
+
+
                                                                                                                  stddev_samp
                                                                                                                  
+
                                                                                                                  This function is used to return the sample deviation of a specified column.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  stddev_samp(col)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  col
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Columns with a data type of numeric. If the values are of any other type, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Calculates the sample covariance between the inventory (items) and the price of all offerings. An example command is as follows:
                                                                                                                    select covar_samp(items,price) from warehouse; 
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    _c0        
+1.242355   
                                                                                                                    
+
                                                                                                                  • When used with group by, it groups all offerings by warehouse (warehourseId) and returns the sample covariance between the inventory (items) and the price of offerings within each group. An example command is as follows:
                                                                                                                    select warehourseId, covar_samp(items,price) from warehourse group by warehourseId; 
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    warehouseId _c1        
+city1    1.03124   
+city2    1.03344   
+city3    1.33425   
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Aggregate Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_substr_substring.html b/docs/dli/sqlreference/dli_spark_substr_substring.html
new file mode 100644
index 00000000..f060612f
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_substr_substring.html
@@ -0,0 +1,69 @@
+
+
+
                                                                                                                  substr/substring
                                                                                                                  
+
                                                                                                                  This function is used to return the substring of str, starting from start_position and with a length of length.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  substr(string <str>, bigint <start_position>[, bigint <length>]) 
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  substring(string <str>, bigint <start_position>[, bigint <length>])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  If the value is of the BIGINT, DECIMAL, DOUBLE, or DATETIME type, the value is implicitly converted to the STRING type for calculation.
                                                                                                                  
+
                                                                                                                  start_position
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Start position. The default value is 1.
                                                                                                                  
+
                                                                                                                  If the value is positive, the substring is returned from the left. If the value is negative, the substring is returned from the right.
                                                                                                                  
+
                                                                                                                  length
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Length of the substring. The value must be greater than 0.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of str is not of the STRING, BIGINT, DECIMAL, DOUBLE, or DATETIME type, an error is reported.
                                                                                                                  • If the value of length is not of the BIGINT type or is less than or equal to 0, an error is reported.
                                                                                                                  • When the length parameter is omitted, a substring that ends with str is returned.
                                                                                                                  • If the value of str, start_position, or length is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value k SQL is returned.
                                                                                                                  
+
                                                                                                                  SELECT substr('Spark SQL', 5); 
                                                                                                                  
+
                                                                                                                  The value SQL is returned.
                                                                                                                  
+
                                                                                                                  SELECT substr('Spark SQL', -3);
                                                                                                                  
+
                                                                                                                  The value k is returned.
                                                                                                                  
+
                                                                                                                  SELECT substr('Spark SQL', 5, 1);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_substring_index.html b/docs/dli/sqlreference/dli_spark_substring_index.html
new file mode 100644
index 00000000..35287a44
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_substring_index.html
@@ -0,0 +1,64 @@
+
+
+
                                                                                                                  substring_index
                                                                                                                  
+
                                                                                                                  This function is used to truncate the string before the count separator of str. If the value of count is positive, the string is truncated from the left. If the value of count is negative, the string is truncated from the right.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  substring_index(string <str>, string <separator>, int <count>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be truncated
                                                                                                                  
+
                                                                                                                  separator
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Separator of the STRING type
                                                                                                                  
+
                                                                                                                  count
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  INT
                                                                                                                  
+
                                                                                                                  Position of the delimiter
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of any input parameter is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value hello.world is returned.
                                                                                                                  
+
                                                                                                                  SELECT substring_index('hello.world.people', '.', 2);  
                                                                                                                  
+
                                                                                                                  The value world.people is returned.
                                                                                                                  
+
                                                                                                                  select substring_index('hello.world.people', '.', -2);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_sum.html b/docs/dli/sqlreference/dli_spark_sum.html
new file mode 100644
index 00000000..43c468ac
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_sum.html
@@ -0,0 +1,53 @@
+
+
+
                                                                                                                  sum
                                                                                                                  
+
                                                                                                                  This function is used to calculate the total sum.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  sum(col), 
+sum(DISTINCT col)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  col
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  The value can be of any data type and can be converted to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  The value can be of the DOUBLE, DECIMAL, or BIGINT type.
                                                                                                                  
+
                                                                                                                  If the value is of the STRING type, the system implicitly converts it to DOUBLE for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of col is NULL, the row is not involved in calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Calculates the total number of offerings (items) in all warehouses. An example command is as follows:
                                                                                                                    select sum(items) from warehouse;
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    _c0        
+55357      
                                                                                                                    
+
                                                                                                                  • When used with group by, it groups all offerings by warehouse (warehouseId) and calculates the total number of offerings in all warehouses. An example command is as follows:
                                                                                                                    select warehouseId, sum(items) from warehouse group by warehouseId;
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    warehouseId| _c1        
+city1    15500      
+city2    10175      
+city3    19400      
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Aggregate Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_tan.html b/docs/dli/sqlreference/dli_spark_tan.html
new file mode 100644
index 00000000..ab005446
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_tan.html
@@ -0,0 +1,47 @@
+
+
+
                                                                                                                  tan
                                                                                                                  
+
                                                                                                                  This function is used to return the tangent value of a, with input in radians.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  tan(DOUBLE a)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  a
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  The value can be a float, integer, or string.
                                                                                                                  
+
                                                                                                                  If the value is not of the DOUBLE type, the system will implicitly convert it to the DOUBLE type for calculation.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of a is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 0.99999999999999999999 is returned.
                                                                                                                  
+
                                                                                                                  select tan(pi()/4);
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select tan(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Mathematical Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_to_char.html b/docs/dli/sqlreference/dli_spark_to_char.html
new file mode 100644
index 00000000..50237fa7
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_to_char.html
@@ -0,0 +1,68 @@
+
+
+
                                                                                                                  to_char
                                                                                                                  
+
                                                                                                                  This function is used to convert a date into a string in a specified format.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  to_char(string date, string format)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Date that needs to be processed
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  format
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Format of the date to be converted
                                                                                                                  
+
                                                                                                                  Constant of the STRING type. Extended date formats are not supported.
                                                                                                                  
+
                                                                                                                  The value is a combination of the time unit (year, month, day, hour, minute, and second) and any character.
                                                                                                                  
+
                                                                                                                  • YYYY or yyyy indicates the year.
                                                                                                                  • MM indicates the month.
                                                                                                                  • mm indicates the minute.
                                                                                                                  • dd indicates the day.
                                                                                                                  • HH indicates the 24-hour clock.
                                                                                                                  • hh indicates the 12-hour clock.
                                                                                                                  • mi indicates the minute.
                                                                                                                  • ss indicates the second.
                                                                                                                  • SSS indicates millisecond.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of format is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The static data 2023-08*16 is returned.
                                                                                                                  
+
                                                                                                                  select to_char('2023-08-16 10:54:36','Example static data yyyy-mm*dd');
                                                                                                                  
+
                                                                                                                  The value 20230816 is returned.
                                                                                                                  
+
                                                                                                                  select to_char('2023-08-16 10:54:36', 'yyyymmdd');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select to_char('Example static data 2023-08-16','Example static data yyyy-mm*dd');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select to_char('20230816', 'yyyy');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select to_char('2023-08-16 10:54:36', null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_to_date.html b/docs/dli/sqlreference/dli_spark_to_date.html
new file mode 100644
index 00000000..32f6945d
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_to_date.html
@@ -0,0 +1,50 @@
+
+
+
                                                                                                                  to_date
                                                                                                                  
+
                                                                                                                  This function is used to return the year, month, and day in a time.
                                                                                                                  
+
                                                                                                                  Similar function: to_date1. The to_date1 function is used to convert a string in a specified format to a date value. The date format can be specified.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  to_date(string timestamp)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  timestamp
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Time to be processed
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DATE type, in the yyyy-mm-dd format.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of timestamp is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of timestamp is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2023-08-16 is returned.
                                                                                                                  
+
                                                                                                                  select to_date('2023-08-16 10:54:36');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select to_date(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_to_date1.html b/docs/dli/sqlreference/dli_spark_to_date1.html
new file mode 100644
index 00000000..a0e1bdc1
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_to_date1.html
@@ -0,0 +1,65 @@
+
+
+
                                                                                                                  to_date1
                                                                                                                  
+
                                                                                                                  This function is used to convert a string in a specified format to a date value.
                                                                                                                  
+
                                                                                                                  Similar function: to_date. The to_date function is used to return the year, month, and day in a time. The date format cannot be specified.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  to_date1(string date, string format)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be converted
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  format
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Format of the date to be converted
                                                                                                                  
+
                                                                                                                  Constant of the STRING type. Extended date formats are not supported.
                                                                                                                  
+
                                                                                                                  The value is a combination of the time unit (year, month, day, hour, minute, and second) and any character.
                                                                                                                  
+
                                                                                                                  • YYYY or yyyy indicates the year.
                                                                                                                  • MM indicates the month.
                                                                                                                  • mm indicates the minute.
                                                                                                                  • dd indicates the day.
                                                                                                                  • HH indicates the 24-hour clock.
                                                                                                                  • hh indicates the 12-hour clock.
                                                                                                                  • mi indicates the minute.
                                                                                                                  • ss indicates the second.
                                                                                                                  • SSS indicates the millisecond.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date is NULL, NULL is returned.
                                                                                                                  • If the value of format is NULL, a date in the yyyy-mm-dd format is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select to_date1('2023-08-16 10:54:36','yyyy-mm-dd');
                                                                                                                  
+
                                                                                                                  The value 2023-08-16 00:00:00 is returned.
                                                                                                                  
+
                                                                                                                  select to_date1('2023-08-16','yyyy-mm-dd');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select to_date(null);
                                                                                                                  
+
                                                                                                                  The value 2023-08-16 is returned.
                                                                                                                  
+
                                                                                                                  select to_date1('2023-08-16 10:54:36');
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_to_utc_timestamp.html b/docs/dli/sqlreference/dli_spark_to_utc_timestamp.html
new file mode 100644
index 00000000..5118559b
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_to_utc_timestamp.html
@@ -0,0 +1,63 @@
+
+
+
                                                                                                                  to_utc_timestamp
                                                                                                                  
+
                                                                                                                  This function is used to convert a timestamp in a given time zone to a UTC timestamp.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  to_utc_timestamp(string timestamp, string timezone)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  timestamp
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  TINYINT
                                                                                                                  
+
                                                                                                                  SMALLINT
                                                                                                                  
+
                                                                                                                  INT
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  Time to be processed
                                                                                                                  
+
                                                                                                                  Date value of the DATE or STRING type, or timestamp of the TINYINT, SMALLINT, INT, or BIGINT type.
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  timezone
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Time zone where the time to be converted belongs
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of timestamp is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of timestamp is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of timestamp is NULL, NULL is returned.
                                                                                                                  • If the value of timezone is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 1692028800000 is returned.
                                                                                                                  
+
                                                                                                                  select to_utc_timestamp('2023-08-14 17:00:00','PST');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select to_utc_timestamp(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_trans_array.html b/docs/dli/sqlreference/dli_spark_trans_array.html
new file mode 100644
index 00000000..092e7c1e
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_trans_array.html
@@ -0,0 +1,97 @@
+
+
+
                                                                                                                  trans_array
                                                                                                                  
+
                                                                                                                  This function is used to convert an array split by a fixed separator in a column into multiple rows.
                                                                                                                  
+
                                                                                                                  Restrictions
                                                                                                                  • All columns used as keys must be placed before the columns to be transposed.
                                                                                                                  • Only one UDTF is allowed in a select statement.
                                                                                                                  • This function cannot be used together with group by, cluster by, distribute by, or sort by.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  trans_array (<num_keys>, <separator>, <key1>,<key2>,…,<col1>,<col2>,<col3>) as (<key1>,<key2>,...,<col1>, <col2>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  num_keys
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  The value is a constant of the BIGINT type and must be greater than or equal to 0. This parameter indicates the number of columns that are used as transposed keys when being converted to multiple rows.
                                                                                                                  
+
                                                                                                                  separator
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  The value is a constant of the STRING type, which is used to split a string into multiple elements. If this parameter is left blank, an error is reported.
                                                                                                                  
+
                                                                                                                  keys
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Columns used as keys during transpose. The number of columns is specified by num_keys. If num_keys specifies that all columns are used as keys (that is, num_keys is equal to the number of all columns), only one row is returned.
                                                                                                                  
+
                                                                                                                  cols
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Array to be converted to rows. All columns following keys are regarded as arrays to be transposed and must be of the STRING type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the data type of the parameter.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • Transposed rows are returned. The new column name is specified by as.
                                                                                                                  • The type of the key column does not change, and the type of other columns is STRING.
                                                                                                                  • The number of rows after the split is subject to the array with more rows. If there are not enough rows, NULL is added.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  To help you understand how to use functions, this example provides source data and function examples based on the source data. Run the following command to create the salary table and add data:
                                                                                                                  CREATE EXTERNAL TABLE salary (
+dept_id STRING, -- Department
+userid string, -- Employee ID
+sal INT -- Salary
+) ROW FORMAT DELIMITED FIELDS TERMINATED BY ',' 
+stored as textfile;
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Adds the following data:
                                                                                                                  
+
                                                                                                                  d1,user1/user4,1000/6000
+d1,user2/user5,2000/7000
+d1,user3/user6,3000
+d2,user4/user7,4000
+d2,user5/user8,5000/8000
                                                                                                                  
+
                                                                                                                  Executes the SQL statement
                                                                                                                  
+
                                                                                                                  select trans_array(1, "/", dept_id, user_id, sal) as (dept_id, user_id, sal) from salary; 
                                                                                                                  
+
                                                                                                                  The command output is as follows:
                                                                                                                  
+
                                                                                                                  d1,user1,1000
+d1,user4,6000
+d1,user2,2000
+d1,user5,7000
+d1,user3,3000
+d1,user6,NULL
+d2,user4,4000
+d2,user7,NULL
+d2,user5,5000
+d2,user8,8000
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Other Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_translate.html b/docs/dli/sqlreference/dli_spark_translate.html
new file mode 100644
index 00000000..7c2b2c4d
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_translate.html
@@ -0,0 +1,64 @@
+
+
+
                                                                                                                  translate
                                                                                                                  
+
                                                                                                                  This function is used to translate the input string by replacing the characters or string specified by from with the characters or string specified by to.
                                                                                                                  
+
                                                                                                                  For example, it replaces bcd in abcde with BCD.
                                                                                                                  
+
                                                                                                                  translate("abcde", "bcd", "BCD")
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  translate(string|char|varchar input, string|char|varchar from, string|char|varchar to)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be truncated
                                                                                                                  
+
                                                                                                                  separator
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Separator of the STRING type
                                                                                                                  
+
                                                                                                                  count
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  INT
                                                                                                                  
+
                                                                                                                  Position of the delimiter
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of any input parameter is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value A1B2C3 is returned.
                                                                                                                  
+
                                                                                                                  SELECT translate('AaBbCc', 'abc', '123');
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_trim.html b/docs/dli/sqlreference/dli_spark_trim.html
new file mode 100644
index 00000000..48262235
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_trim.html
@@ -0,0 +1,70 @@
+
+
+
                                                                                                                  trim
                                                                                                                  
+
                                                                                                                  This function is used to remove characters from the left and right of str.
                                                                                                                  
+
                                                                                                                  • If trimChars is not specified, spaces are removed by default.
                                                                                                                  • If trimChars is specified, the function removes the longest possible substring from both the left and right ends of str that consists of characters in the trimChars set.
                                                                                                                  
+
                                                                                                                  Similar functions:
                                                                                                                  
+
                                                                                                                  • ltrim. This function is used to remove characters from the left of str.
                                                                                                                  • rtrim. This function is used to remove characters from the right of str.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  trim([<trimChars>,]string <str>)
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  trim([BOTH] [<trimChars>] from <str>)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  str
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String from which characters on both left and right are to be removed
                                                                                                                  
+
                                                                                                                  If the value is of the BIGINT, DECIMAL, DOUBLE, or DATETIME type, the value is implicitly converted to the STRING type for calculation.
                                                                                                                  
+
                                                                                                                  trimChars
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Characters to be removed
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of str is not of the STRING, BIGINT, DOUBLE, DECIMAL, or DATETIME type, an error is reported.
                                                                                                                  • If the value of str or trimChars is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Removes spaces on both left and right of the string yxabcxx. An example command is as follows:
                                                                                                                    The value yxabcxx is returned.
                                                                                                                    
+
                                                                                                                    select trim(' yxabcxx '); 
                                                                                                                    
+
                                                                                                                    It is equivalent to the following statement:
                                                                                                                    
+
                                                                                                                    select trim(both from ' yxabcxx '); 
+select trim(from ' yxabcxx ');
                                                                                                                    
+
                                                                                                                  • Removes all substrings from both the left and right ends of the string yxabcxx that consist of characters in the set xy.
                                                                                                                    The function returns Txyom, as any substring starting with x or y from both the left and right ends is removed.
                                                                                                                    
+
                                                                                                                    select trim('xy', 'yxabcxx'); 
                                                                                                                    
+
                                                                                                                    It is equivalent to the following statement:
                                                                                                                    
+
                                                                                                                    select trim(both 'xy' from 'yxabcxx'); 
                                                                                                                    
+
                                                                                                                  • The value of the input parameter is NULL. An example command is as follows:
                                                                                                                    The value NULL is returned.
                                                                                                                    
+
                                                                                                                    select trim(null); 
+select trim(null, 'yxabcxx');
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_trunc.html b/docs/dli/sqlreference/dli_spark_trunc.html
new file mode 100644
index 00000000..e03d5339
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_trunc.html
@@ -0,0 +1,63 @@
+
+
+
                                                                                                                  trunc
                                                                                                                  
+
                                                                                                                  This function is used to reset a date to a specific format.
                                                                                                                  
+
                                                                                                                  Resetting means returning to default values, where the default values for year, month, and day are 01, and the default values for hour, minute, second, and millisecond are 00.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  trunc(string date, string format)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE or STRING
                                                                                                                  
+
                                                                                                                  Date that needs to be processed
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  format
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Format of the date to be converted
                                                                                                                  
+
                                                                                                                  The value is a combination of the time unit (year, month, day, hour, minute, and second) and any character.
                                                                                                                  
+
                                                                                                                  • YYYY or yyyy indicates the year.
                                                                                                                  • MM indicates the month.
                                                                                                                  • mm indicates the minute.
                                                                                                                  • dd indicates the day.
                                                                                                                  • HH indicates the 24-hour clock.
                                                                                                                  • hh indicates the 12-hour clock.
                                                                                                                  • mi indicates the minute.
                                                                                                                  • ss indicates the second.
                                                                                                                  • SSS indicates the millisecond.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DATE type, in the yyyy-mm-dd format.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date is NULL, NULL is returned.
                                                                                                                  • If the value of format is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2023-08-01 is returned.
                                                                                                                  
+
                                                                                                                  select trunc('2023-08-16', 'MM');
                                                                                                                  
+
                                                                                                                  The value 2023-08-01 is returned.
                                                                                                                  
+
                                                                                                                  select trunc('2023-08-16 10:54:36', 'MM');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                   select trunc(null, 'MM');
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_trunc_numeric.html b/docs/dli/sqlreference/dli_spark_trunc_numeric.html
new file mode 100644
index 00000000..dafce27b
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_trunc_numeric.html
@@ -0,0 +1,58 @@
+
+
+
                                                                                                                  trunc_numeric
                                                                                                                  
+
                                                                                                                  This function is used to truncate the number value to a specified decimal place.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  trunc_numeric(<number>[, bigint<decimal_places>])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  number
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DOUBLE, BIGINT, DECIMAL, or STRING
                                                                                                                  
+
                                                                                                                  Data to be truncated
                                                                                                                  
+
                                                                                                                  decimal_places
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  BIGINT
                                                                                                                  
+
                                                                                                                  The default value is 0, indicating that the decimal place at which the number is truncated.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE or DECIMAL type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  The return rules are as follows:
                                                                                                                  
+
                                                                                                                  • If the number value is of the DOUBLE or DECIMAL type, the corresponding type is returned.
                                                                                                                  • If the number value is of the STRING or BIGINT type, DOUBLE is returned.
                                                                                                                  • If the decimal_places value is not of the BIGINT type, an error is reported.
                                                                                                                  • If the value of number is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 3.141 is returned.
                                                                                                                  
+
                                                                                                                  select trunc_numeric(3.1415926, 3);
                                                                                                                  
+
                                                                                                                  The value 3 is returned.
                                                                                                                  
+
                                                                                                                  select trunc_numeric(3.1415926);
                                                                                                                  
+
                                                                                                                  An error is reported.
                                                                                                                  
+
                                                                                                                  select trunc_numeric(3.1415926, 3.1);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Other Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_unix_timestamp.html b/docs/dli/sqlreference/dli_spark_unix_timestamp.html
new file mode 100644
index 00000000..c29c4ac8
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_unix_timestamp.html
@@ -0,0 +1,74 @@
+
+
+
                                                                                                                  unix_timestamp
                                                                                                                  
+
                                                                                                                  This function is used to convert a date value to a numeric date value in UNIX format.
                                                                                                                  
+
                                                                                                                  The function returns the first ten digits of the timestamp in normal UNIX format.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  unix_timestamp(string timestamp, string pattern)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  timestamp
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  DATE or STRING
                                                                                                                  
+
                                                                                                                  Date to be converted
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  
+
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  pattern
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Format to be converted
                                                                                                                  
+
                                                                                                                  If this parameter is left blank, the default format yyyy-mm-dd hh:mm:ss is used.
                                                                                                                  
+
                                                                                                                  The value is a combination of the time unit (year, month, day, hour, minute, and second) and any character.
                                                                                                                  
+
                                                                                                                  • YYYY or yyyy indicates the year.
                                                                                                                  • MM indicates the month.
                                                                                                                  • mm indicates the minute.
                                                                                                                  • dd indicates the day.
                                                                                                                  • HH indicates the 24-hour clock.
                                                                                                                  • hh indicates the 12-hour clock.
                                                                                                                  • mi indicates the minute.
                                                                                                                  • ss indicates the second.
                                                                                                                  • SSS indicates the millisecond.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the BIGINT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of timestamp is NULL, NULL is returned.
                                                                                                                  • If both timestamp and pattern are left blank, the timestamp represented by the number of seconds since 1970-01-01 00:00:00 is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 1692149997 is returned.
                                                                                                                  
+
                                                                                                                  select unix_timestamp('2023-08-16 09:39:57')
                                                                                                                  
+
                                                                                                                  If the current system time is 2023-08-16 10:23:16, 1692152596 is returned.
                                                                                                                  
+
                                                                                                                  select unix_timestamp();
                                                                                                                  
+
                                                                                                                  The value 1692115200 (2023-08-16 00:00:00) is returned.
                                                                                                                  
+
                                                                                                                  select unix_timestamp("2023-08-16 10:56:45", "yyyy-MM-dd");
                                                                                                                  
+
                                                                                                                  Example table data
                                                                                                                  select timestamp1, unix_timestamp(timestamp1) as date1_unix_timestamp, timestamp2, unix_timestamp(datetime1) as date2_unix_timestamp, timestamp3, unix_timestamp(timestamp1) as date3_unix_timestamp from database_t; output:
++------------+-------------------------+-----------------------+---------------------- --+------------------------------------+----------------------------+
+| timestamp1| date1_unix_timestamp | timestamp2              | date2_unix_timestamp | timestamp3                                  | date3_unix_timestamp      |
++------------+-------------------------+-----------------------+-------------------------+------------------------------------+----------------------------+
+| 2023-08-02 | 1690905600000           | 2023-08-02 11:09:14 | 1690945754793           | 2023-01-11 00:00:00.123456789 | 1673366400000                |
+| 2023-08-03 | 1690992000000           | 2023-08-02 11:09:31 | 1690945771994           | 2023-02-11 00:00:00.123456789 | 1676044800000                |
+| 2023-08-04 | 1691078400000           | 2023-08-02 11:09:41 | 1690945781270           | 2023-03-11 00:00:00.123456789 | 1678464000000                |
+| 2023-08-05 | 1691164800000           | 2023-08-02 11:09:48 | 1690945788874           | 2023-04-11 00:00:00.123456789 | 1681142400000                |
+| 2023-08-06 | 1691251200000           | 2023-08-02 11:09:59 | 1690945799099           | 2023-05-11 00:00:00.123456789 | 1683734400000                |
++------------+-------------------------+-----------------------+--------------------------+-----------------------------------+----------------------------+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_upper_ucase.html b/docs/dli/sqlreference/dli_spark_upper_ucase.html
new file mode 100644
index 00000000..bcc904d1
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_upper_ucase.html
@@ -0,0 +1,50 @@
+
+
+
                                                                                                                  upper/ucase
                                                                                                                  
+
                                                                                                                  This function is used to convert all characters of a string to the upper case.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  upper(string A)
                                                                                                                  
+
                                                                                                                  or
                                                                                                                  
+
                                                                                                                  ucase(string A)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  A
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Text string to be converted
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of the input parameter is not of the STRING, BIGINT, DOUBLE, DECIMAL, or DATETIME type, an error is reported.
                                                                                                                  • If the value of the input parameter is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  Converts lowercase characters in a string to the upper case. An example command is as follows:
                                                                                                                  
+
                                                                                                                  The value ABC is returned.
                                                                                                                  
+
                                                                                                                  select upper('abc');
                                                                                                                  
+
                                                                                                                  The value of the input parameter is NULL. An example command is as follows:
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select upper(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: String Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_url_decode.html b/docs/dli/sqlreference/dli_spark_url_decode.html
new file mode 100644
index 00000000..62ded63b
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_url_decode.html
@@ -0,0 +1,53 @@
+
+
+
                                                                                                                  url_decode
                                                                                                                  
+
                                                                                                                  This function is used to convert a string from the application/x-www-form-urlencoded MIME format to regular characters.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  url_decode(string <input>[, string <encoding>])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  input
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be entered
                                                                                                                  
+
                                                                                                                  endcoding
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Encoding format. Standard encoding formats such as GBK and UTF-8 are supported. If this parameter is not specified, UTF-8 is used by default.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  UTF-8-encoded string of the STRING type
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value Example for URL_DECODE:// dsf (fasfs) is returned.
                                                                                                                  
+
                                                                                                                  select url_decode('Example+for+url_decode+%3A%2F%2F+dsf%28fasfs%29', 'GBK');
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Other Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_url_encode.html b/docs/dli/sqlreference/dli_spark_url_encode.html
new file mode 100644
index 00000000..9a8e7e63
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_url_encode.html
@@ -0,0 +1,53 @@
+
+
+
                                                                                                                  url_encode
                                                                                                                  
+
                                                                                                                  This function is used to encode a string in the application/x-www-form-urlencoded MIME format.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  url_encode(string <input>[, string <encoding>])
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  input
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  String to be entered
                                                                                                                  
+
                                                                                                                  endcoding
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  STRING
                                                                                                                  
+
                                                                                                                  Encoding format. Standard encoding formats such as GBK and UTF-8 are supported. If this parameter is not specified, UTF-8 is used by default.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the STRING type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  If the value of input or encoding is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value Example+for+url_encode+%3A%2F%2F+dsf%28fasfs%29 is returned.
                                                                                                                  
+
                                                                                                                  select url_encode('Example for url_encode:// dsf(fasfs)', 'GBK');
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Other Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_variance_var_pop.html b/docs/dli/sqlreference/dli_spark_variance_var_pop.html
new file mode 100644
index 00000000..fb15430a
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_variance_var_pop.html
@@ -0,0 +1,59 @@
+
+
+
                                                                                                                  variance/var_pop
                                                                                                                  
+
                                                                                                                  This function is used to return the variance of a column.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  variance(col), 
+var_pop(col)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  col
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Columns with a data type of numeric.
                                                                                                                  
+
                                                                                                                  If the value is of any other type, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Calculates the variance of all offering inventories (items). An example command is as follows:
                                                                                                                    select variance(items) from warehouse; 
+-- It is equivalent to the following statement:
+select var_pop(items) from warehouse;
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    _c0        
+203.42352 
                                                                                                                    
+
                                                                                                                  • When used with group by, it groups all offerings by warehouse (warehourseId) and returns the variance of the offering inventory (items) in the same group. An example command is as follows:
                                                                                                                    select warehourseId, variance(items) from warehourse group by warehourseId; 
+-- It is equivalent to the following statement:
+select warehourseId, var_pop(items) from warehourse group by warehourseId;
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    1
+2
+3
+4
                                                                                                                    warehouseId _c1        
+city1    19.23124   
+city2    17.23344   
+city3    12.43425   
+
                                                                                                                    
+
+
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Aggregate Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_war_samp.html b/docs/dli/sqlreference/dli_spark_war_samp.html
new file mode 100644
index 00000000..719e8633
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_war_samp.html
@@ -0,0 +1,48 @@
+
+
+
                                                                                                                  var_samp
                                                                                                                  
+
                                                                                                                  This function is used to return the sample variance of a specified column.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  var_samp(col)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  col
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Columns with a data type of numeric.
                                                                                                                  
+
                                                                                                                  If the values are of any other type, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the DOUBLE type.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  • Calculates the sample variance of all offering inventories (items). An example command is as follows:
                                                                                                                    select var_samp(items) from warehouse; 
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    _c0        
+294.342355 
                                                                                                                    
+
                                                                                                                  • When used with group by, it groups all offerings by warehouse (warehourseId) and returns the sample variance of the offering inventory (items) in the same group. An example command is as follows:
                                                                                                                    select warehourseId, var_samp(items) from warehourse group by warehourseId; 
                                                                                                                    
+
                                                                                                                    The command output is as follows:
                                                                                                                    
+
                                                                                                                    warehouseId _c1        
+city1    18.23124   
+city2    16.23344   
+city3    11.43425   
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Aggregate Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_weekday.html b/docs/dli/sqlreference/dli_spark_weekday.html
new file mode 100644
index 00000000..66d557c6
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_weekday.html
@@ -0,0 +1,48 @@
+
+
+
                                                                                                                  weekday
                                                                                                                  
+
                                                                                                                  This function is used to return the day of the current week.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  weekday (string date)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE or STRING
                                                                                                                  
+
                                                                                                                  Date that needs to be processed
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If Monday is used as the first day of a week, the value 0 is returned. For other weekdays, the return value increases in ascending order. For Sunday, the value 6 is returned.
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2 is returned.
                                                                                                                  
+
                                                                                                                  select weekday ('2023-08-16 10:54:36');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select weekday (null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_weekofyear.html b/docs/dli/sqlreference/dli_spark_weekofyear.html
new file mode 100644
index 00000000..e2c859a0
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_weekofyear.html
@@ -0,0 +1,50 @@
+
+
+
                                                                                                                  weekofyear
                                                                                                                  
+
                                                                                                                  This function is used to return the week number (from 0 to 53) of a specified date.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  weekofyear(string date)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE or STRING
                                                                                                                  
+
                                                                                                                  Date that needs to be processed
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 33 is returned.
                                                                                                                  
+
                                                                                                                  select weekofyear('2023-08-16 10:54:36');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select weekofyear('20230816');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                  select weekofyear(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/dli_spark_year.html b/docs/dli/sqlreference/dli_spark_year.html
new file mode 100644
index 00000000..5d5ecd04
--- /dev/null
+++ b/docs/dli/sqlreference/dli_spark_year.html
@@ -0,0 +1,52 @@
+
+
+
                                                                                                                  year
                                                                                                                  
+
                                                                                                                  This function is used to return the year of a specified date.
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  year(string date)
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameter
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Type
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  date
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  DATE or STRING
                                                                                                                  
+
                                                                                                                  Date that needs to be processed
                                                                                                                  
+
                                                                                                                  The following formats are supported:
                                                                                                                  • yyyy-mm-dd
                                                                                                                  • yyyy-mm-dd hh:mi:ss
                                                                                                                  • yyyy-mm-dd hh:mi:ss.ff3
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Return Values
                                                                                                                  The return value is of the INT type.
                                                                                                                  
+
                                                                                                                   
                                                                                                                  • If the value of date is not of the DATE or STRING type, the error message "data type mismatch" is displayed.
                                                                                                                  • If the value of date is of the DATE or STRING type but is not in one of the supported formats, NULL is returned.
                                                                                                                  • If the value of date is NULL, NULL is returned.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example Code
                                                                                                                  The value 2023 is returned.
                                                                                                                  
+
                                                                                                                   select year('2023-08-16 10:54:36');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                   select year('23-01-01');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                   select year('2023/08/16');
                                                                                                                  
+
                                                                                                                  The value NULL is returned.
                                                                                                                  
+
                                                                                                                   select year(null);
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Date Functions
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/en-us_topic_0000001571023676.html b/docs/dli/sqlreference/en-us_topic_0000001571023676.html
new file mode 100644
index 00000000..12ca2fb6
--- /dev/null
+++ b/docs/dli/sqlreference/en-us_topic_0000001571023676.html
@@ -0,0 +1,19 @@
+
+
+
                                                                                                                  Table Lifecycle Management
                                                                                                                  
+
                                                                                                                  
+
+
diff --git a/docs/dli/sqlreference/en-us_topic_0000001621263317.html b/docs/dli/sqlreference/en-us_topic_0000001621263317.html
new file mode 100644
index 00000000..277f97a1
--- /dev/null
+++ b/docs/dli/sqlreference/en-us_topic_0000001621263317.html
@@ -0,0 +1,129 @@
+
+
+
                                                                                                                  Specifying the Lifecycle of a Table When Creating the Table
                                                                                                                  
+
                                                                                                                  Function
                                                                                                                  DLI provides table lifecycle management to allow you to specify the lifecycle of a table when creating the table. DLI determines whether to reclaim a table based on the table's last modification time and its lifecycle. By setting the lifecycle of a table, you can better manage a large number of tables, automatically delete data tables that are no longer used for a long time, and simplify the process of reclaiming data tables. Additionally, data restoration settings are supported to prevent data loss caused by misoperations.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Table Reclamation Rules
                                                                                                                  • When creating a table, use TBLPROPERTIES to specify the lifecycle of the table.
                                                                                                                    • Non-partitioned table
                                                                                                                      If the table is not a partitioned table, the system determines whether to reclaim the table after the lifecycle time based on the last modification time of the table.
                                                                                                                      
+
                                                                                                                    • Partitioned table
                                                                                                                      If the table is a partitioned table, the system determines whether the partition needs to be reclaimed based on the last modification time (LAST_ACCESS_TIME) of the partition. After the last partition of a partitioned table is reclaimed, the table is not deleted.
                                                                                                                      
+
                                                                                                                      Only table-level lifecycle management is supported for partitioned tables.
                                                                                                                      
+
                                                                                                                    
+
                                                                                                                  • Lifecycle reclamation starts at a specified time every day to scan all partitions.
                                                                                                                    Lifecycle reclamation starts at a specified time every day. Reclamation only occurs if the last modification time of the table data (LAST_ACCESS_TIME) detected when scanning complete partitions exceeds the time specified by the lifecycle.
                                                                                                                    
+
                                                                                                                    Assume that the lifecycle of a partitioned table is one day and the last modification time of the partitioned data is 15:00 on May 20, 2023. If the table is scanned before 15:00 on May 20, 2023 (less than one day), the partitions in the table will not be reclaimed. If the last data modification time (LAST_ACCESS_TIME) of a table partition exceeds the time specified by the lifecycle during reclamation scan on May 20, 2023, the partition will be reclaimed.
                                                                                                                    
+
                                                                                                                  • The lifecycle function periodically reclaims tables or partitions, which are reclaimed irregularly every day depending on the level of busyness of the service. It cannot ensure that a table or partition will be reclaimed immediately after its lifecycle expires.
                                                                                                                  • After a table is deleted, all properties of the table, including the lifecycle, will be deleted. After a table with the same name is created again, the lifecycle of the table will be determined by the new property.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Constraints and Limitations
                                                                                                                  • Before using the lifecycle function, log in to the DLI console, choose Global Configuration > Service Authorization, select Tenant Administrator(Project-level), and click Update on the Assign Agency Permissions page.
                                                                                                                  • The table lifecycle function currently only supports creating tables and versioning tables using Hive and Datasource syntax.
                                                                                                                  • The unit of the lifecycle is in days. The value should be a positive integer.
                                                                                                                  • The lifecycle can be set only at the table level. The lifecycle specified for a partitioned table applies to all partitions of the table.
                                                                                                                  • After the lifecycle is set, DLI and OBS tables will support data backup. The backup directory for OBS tables needs to be set manually. The backup directory must be in the parallel file system and in the same bucket as the original table directory. It cannot have the same directory or subdirectory name as the original table.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  • Creating a DLI table using the Datasource syntax
                                                                                                                    CREATE TABLE table_name(name string, id int) 
+USING parquet 
+TBLPROPERTIES( "dli.lifecycle.days"=1 );
                                                                                                                    
+
                                                                                                                  • Creating a DLI table using the Hive syntax
                                                                                                                    CREATE TABLE table_name(name string, id int) 
+stored as parquet 
+TBLPROPERTIES( "dli.lifecycle.days"=1 );
                                                                                                                    
+
                                                                                                                  • Creating an OBS table using the Datasource syntax
                                                                                                                    CREATE TABLE table_name(name string, id int) 
+USING parquet 
+OPTIONS (path "obs://dli-test/table_name")
+TBLPROPERTIES( "dli.lifecycle.days"=1, "external.table.purge"='true', "dli.lifecycle.trash.dir"='obs://dli-test/Lifecycle-Trash' );
                                                                                                                    
+
                                                                                                                  • Creating an OBS table using the Hive syntax
                                                                                                                    1
+2
+3
+4
                                                                                                                    CREATE TABLE table_name(name string, id int) 
+STORED AS parquet 
+LOCATION 'obs://dli-test/table_name'
+TBLPROPERTIES( "dli.lifecycle.days"=1, "external.table.purge"='true', "dli.lifecycle.trash.dir"='obs://dli-test/Lifecycle-Trash' );
+
                                                                                                                    
+
+
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  • TBLPROPERTIES: Table properties, which can be used to extend the lifecycle of a table.
                                                                                                                  • OPTIONS: path of the new table, which is applicable to OBS tables created using the Datasource syntax.
                                                                                                                  • LOCATION: path of the new table, which is applicable to OBS tables created using the Hive syntax.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  table_name
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Name of the table whose lifecycle needs to be set
                                                                                                                  
+
                                                                                                                  dli.lifecycle.days
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Lifecycle duration. The value must be a positive integer, in days.
                                                                                                                  
+
                                                                                                                  external.table.purge
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  This parameter is available only for OBS tables.
                                                                                                                  
+
                                                                                                                  Whether to clear data in the path when deleting a table or partition. The data is not cleared by default.
                                                                                                                  
+
                                                                                                                  When this parameter is set to true:
                                                                                                                  
+
                                                                                                                  • After a file is deleted from a non-partitioned OBS table, the table directory is also deleted.
                                                                                                                  • The custom partition data in the partitioned OBS table is also deleted.
                                                                                                                  
+
                                                                                                                  dli.lifecycle.trash.dir
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  This parameter is available only for OBS tables.
                                                                                                                  
+
                                                                                                                  When external.table.purge is set to true, the backup directory will be deleted. By default, backup data is deleted seven days later.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example
                                                                                                                  • Create the test_datasource_lifecycle table using the Datasource syntax. The lifecycle is set to 100 days.
                                                                                                                    1
+2
+3
                                                                                                                    CREATE TABLE test_datasource_lifecycle(id int) 
+USING parquet 
+TBLPROPERTIES( "dli.lifecycle.days"=100);
+
                                                                                                                    
+
+
                                                                                                                    
+
                                                                                                                  • Create the test_hive_lifecycle table using the Hive syntax. The lifecycle is set to 100 days.
                                                                                                                    1
+2
+3
                                                                                                                    CREATE TABLE test_hive_lifecycle(id int) 
+stored as parquet 
+TBLPROPERTIES( "dli.lifecycle.days"=100);
+
                                                                                                                    
+
+
                                                                                                                    
+
                                                                                                                  • Create the test_datasource_lifecycle_obs table using the Datasource syntax. The lifecycle is set to 100 days. When the lifecycle expires, data is deleted by default and backed up to the obs://dli-test/ directory.
                                                                                                                    1
+2
+3
+4
                                                                                                                    CREATE TABLE test_datasource_lifecycle_obs(name string, id int) 
+USING parquet 
+OPTIONS (path "obs://dli-test/xxx")
+TBLPROPERTIES( "dli.lifecycle.days"=100, "external.table.purge"='true', "dli.lifecycle.trash.dir"='obs://dli-test/Lifecycle-Trash' );
+
                                                                                                                    
+
+
                                                                                                                    
+
                                                                                                                  • Create the test_hive_lifecycle_obs table using the Hive syntax. The lifecycle is set to 100 days. When the lifecycle expires, data is deleted by default and backed up to the obs://dli-test/ directory.
                                                                                                                    1
+2
+3
+4
                                                                                                                    CREATE TABLE test_hive_lifecycle_obs(name string, id int) 
+STORED AS parquet 
+LOCATION 'obs://dli-test/xxx'
+TBLPROPERTIES( "dli.lifecycle.days"=100, "external.table.purge"='true', "dli.lifecycle.trash.dir"='obs://dli-test/Lifecycle-Trash' );
+
                                                                                                                    
+
+
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parent topic: Table Lifecycle Management
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
diff --git a/docs/dli/sqlreference/en-us_topic_0000001621382957.html b/docs/dli/sqlreference/en-us_topic_0000001621382957.html
new file mode 100644
index 00000000..983df631
--- /dev/null
+++ b/docs/dli/sqlreference/en-us_topic_0000001621382957.html
@@ -0,0 +1,56 @@
+
+
+
                                                                                                                  Modifying the Lifecycle of a Table
                                                                                                                  
+
                                                                                                                  Function
                                                                                                                  This section describes how to modify the lifecycle of an existing partitioned or non-partitioned table.
                                                                                                                  
+
                                                                                                                  When the lifecycle function is enabled for the first time, the system scans tables or partitions, scans table data files in the path, and updates LAST_ACCESS_TIME of tables or partitions. The time required depends on the number of partitions and files.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Constraints and Limitations
                                                                                                                  • The table lifecycle function currently only supports creating tables and versioning tables using Hive and Datasource syntax.
                                                                                                                  • The unit of the lifecycle is in days. The value should be a positive integer.
                                                                                                                  • The lifecycle can be set only at the table level. The lifecycle specified for a partitioned table applies to all partitions of the table.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  ALTER TABLE table_name
+SET TBLPROPERTIES("dli.lifecycle.days"='N')
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  TBLPROPERTIES: Table properties, which can be used to extend the lifecycle of a table.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
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                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  table_name
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Name of the table whose lifecycle needs to be modified
                                                                                                                  
+
                                                                                                                  dli.lifecycle.days
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Lifecycle duration after the modification. The value must be a positive integer, in days.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example
                                                                                                                  • Example 1: Enable the lifecycle function for the test_lifecycle_exists table and set the lifecycle to 50 days.
                                                                                                                    alter table test_lifecycle_exists
+SET TBLPROPERTIES("dli.lifecycle.days"='50');
                                                                                                                    
+
                                                                                                                  • Example 2: Enable the lifecycle function for an existing partitioned or non-partitioned table for which lifecycle is not set, for example, for the test_lifecycle_exists table, and set the lifecycle to 50 days.
                                                                                                                    alter table test_lifecycle_exists
+SET TBLPROPERTIES(
+    "dli.lifecycle.days"='50',
+    "dli.table.lifecycle.status"='enable'
+);
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
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+
                                                                                                                  Parent topic: Table Lifecycle Management
                                                                                                                  
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                                                                                                                  Disabling or Restoring the Lifecycle of a Table
                                                                                                                  
+
                                                                                                                  Function
                                                                                                                  This section describes how to disable or restore the lifecycle of a specified table or partition.
                                                                                                                  
+
                                                                                                                  You can disable or restore the lifecycle of a table in either of the following scenarios:
                                                                                                                  1. If the lifecycle function has been enabled for a table or partitioned table, the system allows you to disable or restore the lifecycle of the table by changing the value of dli.table.lifecycle.status.
                                                                                                                  2. If the lifecycle function is not enabled for a table or partitioned table, the system will add the dli.table.lifecycle.status property to allow you to disable or restore the lifecycle function of the table.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Constraints and Limitations
                                                                                                                  • The table lifecycle function currently only supports creating tables and versioning tables using Hive and Datasource syntax.
                                                                                                                  • The unit of the lifecycle is in days. The value should be a positive integer.
                                                                                                                  • The lifecycle can be set only at the table level. The lifecycle specified for a partitioned table applies to all partitions of the table.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Syntax
                                                                                                                  • This syntax can be used to disable or restore the lifecycle of a table at the table level.
                                                                                                                    1
                                                                                                                    ALTER TABLE table_name SET TBLPROPERTIES("dli.table.lifecycle.status"={enable|disable});
+
                                                                                                                    
+
+
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  • This syntax can be used to disable or restore the lifecycle of a specified table at the table or partition table level.
                                                                                                                    1
                                                                                                                    ALTER TABLE table_name [pt_spec] LIFECYCLE {enable|disable};
+
                                                                                                                    
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+
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Keywords
                                                                                                                  TBLPROPERTIES: Table properties, which can be used to extend the lifecycle of a table.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Parameters
                                                                                                                  
+
                                                                                                                  
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                                                                                                                  Table 1 Parameters
                                                                                                                  Parameter
                                                                                                                  
+
                                                                                                                  Mandatory
                                                                                                                  
+
                                                                                                                  Description
                                                                                                                  
+
                                                                                                                  table_name
                                                                                                                  
+
                                                                                                                  Yes
                                                                                                                  
+
                                                                                                                  Name of the table whose lifecycle is to be disabled or restored
                                                                                                                  
+
                                                                                                                  pt_spec
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Partition information of the table whose lifecycle is to be disabled or restored. The format is partition_col1=col1_value1, partition_col2=col2_value1.... For a table with multi-level partitions, all partition values must be specified.
                                                                                                                  
+
                                                                                                                  enable
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Restores the lifecycle function of a table or a specified partition.
                                                                                                                  • The table and its partitions participate in lifecycle reclamation again. By default, the lifecycle configuration of the current table and its partitions is used.
                                                                                                                  • Before enabling the table lifecycle function, it is recommended to modify the lifecycle configuration of the table and its partitions. This will help prevent any accidental data reclamation caused by the previous configuration once the table lifecycle function is enabled.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  disable
                                                                                                                  
+
                                                                                                                  No
                                                                                                                  
+
                                                                                                                  Disables the lifecycle function of a table or a specified partition.
                                                                                                                  
+
                                                                                                                  • Prevents a table and all its partitions from being reclaimed by the lifecycle. It takes priority over restoring the lifecycle of a table and its partitions. That is, when the lifecycle function of a table or a specified partition is disabled, the partition information of the table whose lifecycle is to be disabled or restored is invalid.
                                                                                                                  • After the lifecycle function of a table is disabled, the lifecycle configuration of the table and the enable and disable flags of its partitions are retained.
                                                                                                                  • After the lifecycle function of a table is disabled, the lifecycle configuration of the table and partitioned table can still be modified.
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  
+
                                                                                                                  Example
                                                                                                                  • Example 1: Disable the lifecycle function of the test_lifecycle table.
                                                                                                                    1
                                                                                                                    alter table test_lifecycle SET TBLPROPERTIES("dli.table.lifecycle.status"='disable');
+
                                                                                                                    
+
+
                                                                                                                    
+
                                                                                                                  
+
                                                                                                                  • Example 2: Disable the lifecycle function for the partition whose time is 20230520 in the test_lifecycle table.
                                                                                                                    1
                                                                                                                    alter table test_lifecycle partition (dt='20230520') LIFECYCLE 'disable';
+
                                                                                                                    
+
+
                                                                                                                    
+
                                                                                                                     
                                                                                                                    • After the lifecycle function of a partitioned table is disabled, the lifecycle function of all partitions within the table will also be disabled.
                                                                                                                    
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+
                                                                                                                  Parent topic: Table Lifecycle Management
                                                                                                                  
+
                                                                                                                  
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