Question

我正在尝试从skills_jobs表中删除一行

以下是我的查询

delete from skills_jobs skj inner join jobs j on skj.jobid=j.id inner join users u on u.id=j.userid where u.id=$userid

但它会引发以下错误;

致命错误：未捕获的异常'异常'，消息'你有一个 SQL语法错误;查看与您的手册相对应的手册 MySQL服务器版本，用于在'skj内连接附近使用正确的语法作业j在skj.jobid = j.id内部加入用户你在u.id = j.userid wher'at 第1行查询：从技能_jobs skj内部联接作业j中删除 skj.jobid = j.id内部联接用户你在u.id = j.userid其中u.id = 41

Answer 1

您必须设置表，从中删除行，然后尝试：

DELETE skills_jobs from skills_jobs INNER JOIN jobs j ON skills_jobs.jobid=j.id INNER JOIN users u ON u.id=j.userid WHERE u.id=$userid

参见＆＃34;多表删除＆＃34;来自https://dev.mysql.com/doc/refman/5.7/en/delete.html

Answer 2

应该是这样的

skills_jobs skj inner join jobs j on skj.jobid=j.id

你忘记了语法

所以正确的语法如下所示： -

delete from skills_jobs skj inner join jobs j on skj.jobid=j.id inner join users u on u.id=j.userid where u.id=$userid

希望这有帮助！

Answer 3

delete from skills_jobs skj 
inner join jobs j ON skj.jobid=j.id 
inner join users u ON u.id=j.userid 
where u.id=$userid

尝试以上代码。希望这会有所帮助。

Answer 4

DELETE FROM skills_jobs skj INNER JOIN jobs j ON j.id=skj.jobid INNER JOIN 
users u ON u.id=j.userid 
WHERE u.id=$userid

Answer 5

 DELETE FROM skj USING `skills_jobs` AS skj
 INNER JOIN `jobs` AS j ON skj.`jobid` = j.`id`
 INNER JOIN `users` AS u ON u.`id` = j.`userid` 
 WHERE u.`id` = $userid

如果声明表的别名，则在引用表时必须使用别名。

另一个有条理的答案：

DELETE skj FROM `skills_jobs` AS skj
INNER JOIN `jobs` AS j ON skj.`jobid`=j.`id` 
INNER JOIN `users` AS u ON u.`id`=j.`userid`
WHERE u.`id`=$userid

删除一个表连接多个表与where条件

5 个答案: