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DROP SHARDING ALGORITHM

Description

The DROP SHARDING ALGORITHM syntax is used to drop sharding algorithm for specified database.

Syntax

DropShardingAlgorithm ::=
  'DROP' 'SHARDING' 'ALGORITHM' shardingAlgorithmName ifExists? ('FROM' databaseName)?

ifExists ::=
  'IF' 'EXISTS'

shardingAlgorithmName ::=
  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 used for avoid Sharding algorithm not exists error.

Example

  • Drop sharding algorithm for specified database
DROP SHARDING ALGORITHM t_order_hash_mod FROM sharding_db;
  • Drop sharding algorithm for current database
DROP SHARDING ALGORITHM t_order_hash_mod;
  • Drop sharding algorithm with ifExists clause
DROP SHARDING ALGORITHM IF EXISTS t_order_hash_mod;

Reserved word

DROP, SHARDING, ALGORITHM, FROM