DROP DEFAULT SHARDING STRATEGY 语法用于从当前逻辑库中删除默认分片策略。
DropDefaultShardingStrategy ::=
'DROP' 'DEFAULT' 'SHARDING' ('TABLE' | 'DATABASE') 'STRATEGY' ifExists?
ifExists ::=
'IF' 'EXISTS'
ifExists 子句用于避免 Default sharding strategy not exists 错误。DROP DEFAULT SHARDING TABLE STRATEGY;
DROP DEFAULT SHARDING DATABASE STRATEGY;
ifExists 子句删除默认表分片策略DROP DEFAULT SHARDING TABLE STRATEGY IF EXISTS;
ifExists 子句删除默认库分片策略DROP DEFAULT SHARDING DATABASE STRATEGY IF EXISTS;
DROP、DEFAULT、SHARDING、TABLE、DATABASE、STRATEGY、IF、EXISTS