MySQL

Question

我正在尝试删除与我的 MyBB 数据库中使用超过两次的 IP 关联的所有帐户。以下代码适用于 "select" 这些用户。

SELECT * FROM `mybb_forumusers` WHERE `regip` IN (
    SELECT `regip` FROM `mybb_forumusers`
    GROUP BY `regip`
    HAVING COUNT( `regip` ) > 2
)

但是，我无法在不出错的情况下成功删除所有这些用户。我尝试了以下（和变体）：

DELETE FROM `mybb_forumusers` WHERE `uid` IN (
    SELECT `uid` FROM `mybb_forumusers` WHERE `regip`IN (
        SELECT `regip` FROM `mybb_forumusers`
        GROUP BY `regip`
        HAVING COUNT( `regip` ) > 2
    )
)

Answer 1

我建议使用 join:

DELETE fu
    FROM `mybb_forumusers` fu JOIN 
         (SELECT `regip`
          FROM `mybb_forumusers`
          GROUP BY `regip`
          HAVING COUNT( `regip` ) > 2
         ) fu2
         ON fu2.regip = fu.regip;

MySQL - 删除选择

MySQL - Delete a selection

sql

database

mybb