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ALTER READWRITE_SPLITTING RULE ENABLE/DISABLE

Description

The ALTER READWRITE_SPLITTING RULE ENABLE/DISABLE syntax is used enable/disable a specified read source for specified readwrite splitting rule.

Syntax

AlterReadwriteSplittingRule ::=
  'ALTER' 'READWRITE_SPLITTING' 'RULE' groupName ( 'ENABLE' | 'DISABLE' ) storageUnitName 'FROM' databaseName

groupName ::=
  identifier

storageUnitName ::=
  identifier

databaseName ::=
  identifier

Supplement

  • When databaseName is not specified, the default is the currently used DATABASE. If DATABASE is not used, No database selected will be prompted.

Example

  • Disable a specified read source for specified readwrite splitting rule in specified database
ALTER READWRITE_SPLITTING RULE ms_group_0 DISABLE read_su_0 FROM test1;
  • Enable a specified read source for specified readwrite splitting rule in specified database
ALTER READWRITE_SPLITTING RULE ms_group_0 ENABLE read_su_0 FROM test1;
  • Disable a specified read source for specified readwrite splitting rule in current database
ALTER READWRITE_SPLITTING RULE ms_group_0 DISABLE read_su_0;
  • Enable a specified read source for specified readwrite splitting rule in current database
ALTER READWRITE_SPLITTING RULE ms_group_1 ENABLE read_su_0;

Reserved word

ALTER, READWRITE_SPLITTING, RULE, ENABLE, DISABLE