The DROP SHARDING KEY GENERATOR syntax is used to drop sharding key generator for specified database.
DropShardingKeyGenerator ::=
  'DROP' 'SHARDING' 'KEY' 'GENERATOR' keyGeneratorName ('FROM' databaseName)?
keyGeneratorName ::=
  identifier
  
databaseName ::=
  identifier
databaseName is not specified, the default is the currently used DATABASE. If DATABASE is not used, No database selected will be prompted.DROP SHARDING KEY GENERATOR t_order_snowflake FROM sharding_db;
DROP SHARDING KEY GENERATOR t_order_snowflake;
DROP, SHARDING, KEY, GENERATOR, FROM
