DROP DEFAULT SHARDING STRATEGY

Description

The DROP DEFAULT SHARDING STRATEGY syntax is used to drop default sharding strategy for specified database.

Syntax

Grammar Railroad diagram

DropDefaultShardingStrategy ::=
  'DROP' 'DEFAULT' 'SHARDING' ('TABLE' | 'DATABASE') 'STRATEGY' ifExists? ('FROM' databaseName)?
ifExists ::=
  'IF' 'EXISTS'
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 for avoid Default sharding strategy not exists error.

Example

• Drop default sharding table strategy for specified database

DROP DEFAULT SHARDING TABLE STRATEGY FROM sharding_db;

• Drop default sharding database strategy for current database

DROP DEFAULT SHARDING DATABASE STRATEGY;

• Drop default sharding table strategy with ifExists clause

DROP DEFAULT SHARDING TABLE STRATEGY IF EXISTS;

• Drop default sharding database strategy with ifExists clause

DROP DEFAULT SHARDING DATABASE STRATEGY IF EXISTS;

Reserved word

DROP, DEFAULT , SHARDING, TABLE, DATABASE ,STRATEGY, FROM

Related links

• Reserved word