sql从查询中删除结果

问题描述

我有两张表，结构相同

• clients 包含第 1+2 行
• clients3 仅第 2 行

• clients contains row 1+2
• clients3 only row 2

我想删除clients表中的第2行

 SELECT *
 FROM clients
 WHERE EXISTS (SELECT * FROM clients3 WHERE clients3.id = clients.id))

给了我第 2 行.但我不知道如何删除.

gives me the row 2. But I do not know how to delete.

DELETE *
FROM clients
WHERE (SELECT *
       FROM clients
       WHERE EXISTS (SELECT * FROM clients3 WHERE clients3.id = clients.id))

不起作用.

推荐答案

无需在查询中两次引用 clients 表并从 DELETE*/code> 子句 -

No need to refer clients table twice in your query and remove * from DELETE clause -

DELETE c1
FROM clients c1
INNER JOIN clients3 c3 ON c3.id = c1.id --INNER JOIN will work as EXISTS for 1-1 Relation

这篇关于sql从查询中删除结果的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！