MySQL删除查询与派生表

我被困在MySql删除查询。

基本上我需要删除该SELECT查询的结果：

SELECT radcheck.* FROM 
(SELECT 
    permanent_users.realm, 
    devices.name, 
    devices.created, 
    TimeDiff(Now(), devices.created) AS TimeDifference 
FROM 
    permanent_users 
    INNER JOIN devices ON devices.permanent_user_id = permanent_users.id 
WHERE 
    TimeDiff(Now(), devices.created) > '01:30') MySubQuery 
    INNER JOIN radcheck ON MySubQuery.name = radcheck.username

任何帮助将大大apreciated！

谢谢

来源

2017-08-22 XeWonder

应该

delete radcheck from radcheck 
    inner join (SELECT 
     permanent_users.realm, 
     devices.name, 
     devices.created, 
     TimeDiff(Now(), devices.created) AS TimeDifference 
    FROM 
     permanent_users 
     INNER JOIN devices ON devices.permanent_user_id = permanent_users.id 
    WHERE 
     TimeDiff(Now(), devices.created) > '01:30') MySubQuery on MySubQuery.name = radcheck.username

来源

2017-08-22 16:22:09 scaisEdge

嗨，非常感谢您的及时回复。我得到错误“ERROR 1064（42000）：你的SQL语法有错误;检查与你的MySQL服务器版本相对应的手册，在正确的语法附近使用'inner join'（SELECT permanent_users.realm，devices.name，devices .created，TIMEDIFF（N”位于第1" 行 – XeWonder

从radcheck 删除radcheck内部联接（SELECT permanent_users.realm， devices.name， devices.created， TIMEDIFF（现在（），devices.created）AS为TimeDifference FROM permanent_users INNER JOIN设备ON devices.permanent_user_id = permanent_users.id WHERE TIMEDIFF（现在（），devices.created）> '00：上MySubQuery.name = radcheck.username 05' ）MySubQuery; 这个作品 – XeWonder

@XeWonder 00:05改为01:30的一部分..我没有看到区别所以..如果我的回答是正确的或者将你引向正确的解决方案，请将其标记为已接受.. 。see how http://meta.stackexchange.com/questions/5234/how-does-accepting-an-answer-work – scaisEdge

继frmo scaisEdge的提示，这个工程

谢谢!!

delete radcheck from radcheck 
    inner join (SELECT 
    permanent_users.realm, 
    devices.name, 
    devices.created, 
    TimeDiff(Now(), devices.created) AS TimeDifference 
    FROM 
    permanent_users 
    INNER JOIN devices ON devices.permanent_user_id = permanent_users.id 
    WHERE 
    TimeDiff(Now(), devices.created) > '00:05') MySubQuery on MySubQuery.name = radcheck.username;

来源

2017-08-23 08:25:24 XeWonder

MySQL删除查询与派生表

回答

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