mysql - 使用同一表中另一行的数据更新行

Question

UPDATE user SET 
                tw_oauth_token=(SELECT tw_oauth_token FROM user WHERE id=27),
                tw_oauth_token_secret = (SELECT tw_oauth_token_secret FROM user WHERE id=27),
                tw_user_id = (SELECT tw_user_id FROM user WHERE id=27),
                handler = (SELECT handler FROM user WHERE id=27),
                merged=1 WHERE id=26

这个想法是从 id = 27 的用户表中选择数据并更新 id = 26 的同一个表。

我遇到以下错误:

#1093 - You can't specify target table 'user' for update in FROM clause

如有任何帮助，我们将不胜感激。谢谢

Answer 1

UPDATE  user a
        CROSS JOIN user b
SET     a.tw_oauth_token = b.tw_oauth_token,
        a.tw_oauth_token_secret = b.tw_oauth_token_secret,
        a.tw_user_id = b.tw_user_id,
        a.handler = b.handler,
        a.mrged = 1
WHERE   a.ID = 26 AND
        b.ID = 27