mysql - MySQL 查询删除表 A 中与表 B 中电子邮件匹配的记录

Question

我在两个名为“电子邮件”的表中有一个公共列，如果在表 B 中找到匹配项，我需要从表 A 中删除记录。

这行得通吗？有一个更好的方法吗？

DELETE b.* FROM `tableA` b
JOIN `tableB` u
ON u.email = b.email

score 4 · Accepted Answer

4

DELETE FROM tableA WHERE email IN (SELECT email FROM tableB)

于 2013-11-05T15:50:38.713 回答

score 3 · Accepted Answer

3

DELETE FROM TableA WHERE email IN (SELECT b FROM TableB)

于 2013-11-05T16:06:47.653 回答

score 1 · Accepted Answer

1

去除那个*

DELETE b 
FROM `tableA` b
JOIN `tableB` u ON u.email = b.email

于 2013-11-05T15:53:24.883 回答

3 回答 3