DROP SHARDING TABLE RULE

Description

The DROP SHARDING TABLE RULE syntax is used to drop sharding table rule for specified database.

Syntax

Grammar Railroad diagram

DropShardingTableRule ::=
  'DROP' 'SHARDING' 'TABLE' 'RULE' ifExists? shardingRuleName (',' shardingRuleName)*  ('FROM' databaseName)?
ifExists ::=
  'IF' 'EXISTS'
shardingRuleName ::=
  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;
• ifExists clause is used to avoid Sharding rule not exists error.

Example

• Drop mutiple sharding table rules for specified database

DROP SHARDING TABLE RULE t_order, t_order_item FROM sharding_db;

• Drop a sharding table rule for current database

DROP SHARDING TABLE RULE t_order;

• Drop sharding table rule with ifExists clause

DROP SHARDING TABLE RULE IF EXISTS t_order;

Reserved word

DROP, SHARDING, TABLE, RULE, FROM

Related links

• Reserved word