38 lines
1.3 KiB
ReStructuredText
38 lines
1.3 KiB
ReStructuredText
:original_name: ddm-08-0013.html
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.. _ddm-08-0013:
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Use Constraints
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===============
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- Triggers
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- Temporary tables
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- DO statement
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- Association with foreign keys
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- RESET statement
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- FLUSH statement
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- BINLOG statement
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- HANDLER statement
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- SHOW WARNINGS statement
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- Assignment operator :=
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- Operators less than (<), assignment (=), and more than (>)
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- Expression IS UNKNOWN
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- INSTALL and UNINSTALL PLUGIN statements
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- Cross-shard stored procedures and custom functions
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- Statements for modifying database names, table names, and sharding field names and types
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- Most of SHOW statements such as SHOW PROFILES and SHOW ERRORS
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- Table maintenance statements, including ANALYZE, CHECK, CHECKSUM, OPTIMIZE, and REPAIR TABLE
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- Statements for assigning a value to or querying variable **session**, for example, set @rowid=0;select @rowid:=@rowid+1,id from user
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- SQL statements that use -- or /*...*/ to comment out a single line or multiple lines of code
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- The result of the REPEAT function contains a maximum of 1,000,000 characters (in version 3.0.9 or later).
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Permission Levels
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-----------------
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- Global level (not supported)
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- Database level (supported)
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- Table level (supported)
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- Column level (not supported)
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- Subprogram level (not supported)
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- User level (supported)
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