我的MySQL语句怎么了? [英] What's wrong with my MySQL statement?
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问题描述
UPDATE table1 SET announcer = ( SELECT memberid
FROM ( table1
JOIN users ON table2.username = table1.announcer
) AS a
WHERE a.username = table1.announcer )
#1064-您的SQL语法有错误；检查手册 对应于您的MySQL服务器 使用正确语法的版本 在附近 a.username = table1.announcer)' 在第1行
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'a where a.username=table1.announcer)' at line 1
推荐答案
尝试:
UPDATE announcements a
SET announcer =
(SELECT memberid
FROM users u
WHERE u.username = a.announcer)
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