在另一个表上查找后从表中删除 - SQL

Question

HIII
我有两张桌子

Invited

• UID [pk]

Active

• UID [pk]

我想删除Invited表格中存在的Active的UID 我可以使用加入来执行此操作，或者唯一的方法是使用NOT IN or IN？

Answer 1

是的，您可以使用IN。

Delete From Invited where UID in (Select UID From Active)

如果您想

，也可以使用加入

Delete i
From Invited as i
Join Active as a on i.UID = a.UID 

Answer 2

DELETE FROM `Invited` WHERE Invited.UID IN ( SELECT UID FROM `Active`)

或者，为了提高绩效：

DELETE i FROM `Invited` AS i WHERE EXISTS ( SELECT 1 FROM `Active` WHERE Active.UID = i.UID )