效率删除
弱弱地问一下，两个表A，B。
A.ID B.ID
1 2
2 3
3 5
4
5
如何高效删除A表ID和B表ID不相等的记录，这里是1，4

------解决方案--------------------
delete A where not exists(select 1 from A,B where A.id = B.id)
------解决方案--------------------

SQL code

delete A where not exists(select 1 from A,B where A.id = B.id)