效率删除弱弱地问一下,两个表A,B。A.ID B.ID1 22 33 545如何高效删除A表ID和B表ID不相等的记录,这里是1,4[解决办法]delete A where not exists(select 1 from A,B where A.id = B.id)[解决办法]
delete A where not exists(select 1 from A,B where A.id = B.id)