复古 护眼 海天 深邃 暗黑 默认

DROP READWRITE_SPLITTING RULE

描述

DROP READWRITE_SPLITTING RULE 语法用于为指定逻辑库删除读写分离。

语法定义

DropReadwriteSplittingRule ::=
  'DROP' 'READWRITE_SPLITTING' 'RULE' ifExists? ruleName (',' ruleName)* ('FROM' databaseName)?

ifExists ::=
  'IF' 'EXISTS'

ruleName ::=
  identifier

databaseName ::=
  identifier

补充说明

  • 未指定 databaseName 时，默认是当前使用的 DATABASE。 如果也未使用 DATABASE 则会提示 No database selected；
  • ifExists 子句用于避免 Readwrite-splitting rule not exists 错误。

示例

  • 为指定逻辑库删除读写分离规则
DROP READWRITE_SPLITTING RULE ms_group_1 FROM readwrite_splitting_db;
  • 为当前逻辑库删除读写分离规则
DROP READWRITE_SPLITTING RULE ms_group_1;
  • 使用 ifExists 子句删除读写分离规则
DROP READWRITE_SPLITTING RULE IF EXISTS ms_group_1;

保留字

DROP、READWRITE_SPLITTING、RULE

相关链接