MySQL子查询语法错误

Question

这个 MySQL 查询有什么问题？

    $result = mysql_query("SELECT did FROM publications where group IN 
(SELECT s_group FROM subscriptions where uid1='$id')") or die(mysql_error());

我收到语法错误:

        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 's_group FROM 
subscriptions where uid1='34846')' at line 1

Answer 1

GROUP 是保留关键字。用 ` 括起来表示它是一个列名称:

SELECT did FROM publications where `group` IN 
(SELECT s_group FROM subscriptions where uid1=1)