doc-exports/docs/dws/dev/dws_04_1030.html

INSERT

Function

Insert one or more rows of data into an HStore table.

Precautions

• If the data to be inserted at a time is greater than or equal to the value of the table-level parameter DELTAROW_THRESHOLD, the data is directly inserted into the primary table to generate a compression unit (CU).
• If the data to be inserted is smaller than DELTAROW_THRESHOLD, a record of the type I will be inserted into the delta table. The data will be serialized and stored in the values field of the record.
• CUIDs are allocated to the data in the delta table and the primary table in a unified manner.
• The data inserted into the delta table depends on AUTOVACUUM to merge to primary table CUs.

Syntax

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INSERT [/*+ plan_hint */] [ IGNORE | OVERWRITE ] INTO table_name [ AS alias ] [ ( column_name [, ...] ) ] { DEFAULT VALUES | VALUES {( { expression | DEFAULT } [, ...] ) }[, ...] | query }

Parameters

• table_name

  Specifies the name of the target table.

  Value range: an existing table name

• AS

  Specifies an alias for the target table table_name. alias indicates the alias name.

• column_name

  Specifies the name of a column in a table.

• query

  Specifies a query statement (SELECT statement) that uses the query result as the inserted data.

Example

Create the reason_t1 table.

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-- Create the reason_t1 table. CREATE TABLE reason_t1 ( TABLE_SK INTEGER , TABLE_ID VARCHAR(20) , TABLE_NA VARCHAR(20) )WITH(ORIENTATION=COLUMN, ENABLE_HSTORE=ON);

Insert a record into a table.

1	INSERT INTO reason_t1(TABLE_SK, TABLE_ID, TABLE_NA) VALUES (1, 'S01', 'StudentA');

Insert records into the table.

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INSERT INTO reason_t1 VALUES (1, 'S01', 'StudentA'),(2, 'T01', 'TeacherA'),(3, 'T02', 'TeacherB'); SELECT * FROM reason_t1 ORDER BY 1; TABLE_SK | TABLE_ID | TABLE_NAME ----------+----------+------------ 1 | S01 | StudentA 2 | T01 | TeacherA 3 | T02 | TeacherB (3 rows)

Parent topic: Hybrid Data Warehouse Syntax