摘要:
期望效果:(我是拿到一对关系去另一表中的一对关系去对比)select * From Empoylee Where(Address1,Address2) in(Select Address1,Address2From EmpoyleeAdressesWhere Country = 'Canada')以上无法实现用这种方案也可以实现 不过速度很慢的select * from (select (zcbm ||','||fwbm) as t from T_FWZC ) tt where t not in(select (zcbm ||','||fwbm) 阅读全文