MySQL除尝试获取除在线之外的所有在线用户外

Question

当我想要选择所有在线的输入和用户（1）时，我怎么能在MySQL中说，除了一个id为4的用户？我想要id = 4的用户名而不是输入

我没试过，但我猜它不适合我。

SELECT username,typing FROM members WHERE status = 1 NOT IN (SELECT typing FROM members WHERE id =4)

http://img266.imageshack.us/img266/2313/typing.png

点击图片了解更多信息

Answer 1

我会使用这样的连接：

SELECT username, typing FROM members members LEFT OUTER JOIN typing typing WHERE members.status = 1 AND typing.id <> 4

Answer 2

这是你想要的吗？

SELECT username, 
       (case when id <> 4 then typing end) as typing
FROM members
WHERE status = 1 or id = 4

根据您的图片，我认为您只想：

SELECT username, typing
FROM members
WHERE status = 1 and id <> 4