Sql选择加入和删除在一起

Question

表大师

|  id  |   user  |
|  1   |  user1  |
|  3   |  user2  |
|  4   |  user3  |

table ver

| id_v |  value  |
|  2   |  value1 |
|  3   |  value2 |

我必须删除表ver

上的id_v 2

我＆＃39;有这个查询

DELETE FROM `ver` WHERE id_v in (SELECT v.id_v
FROM master m
RIGHT JOIN ver v
ON m.id = v.id_v
WHERE m.id IS NULL)

但这是错误

You can't specify target table 'ver' for update in FROM clause

Answer 1

试试这个

DELETE FROM `ver` WHERE id_v in ( SELECT id_v from
(SELECT v.id_v FROM master m
RIGHT JOIN ver v
ON m.id = v.id_v
WHERE m.id IS NULL) as temp )

Answer 2

可以使用以下

完成

delete 
v
from ver v
left join master m on m.id = v.id_v
where m.id is null

<强> Demo

Answer 3

您不能使用table ver的子查询从表ver本身中删除某些内容。

你是说这个？

delete from ver where id_v is null;