如何插入 table WHERE 从选择中获取的值之一

How to INSERT INTO table WHERE one of the values taken from selection

我有三个表:

用户组user 其中包含 usergroupid 外键 — subscribeforum with subscribeforumid (auto incr), userid, forumid, emailupdate

我需要将属于用户组 2 和 12 的所有用户插入 subscribeforum(其余值:forumid 2 和 emailupdate 2)

下面的当然不行,因为它"returns more than one record"

INSERT INTO subscribeforum ()
VALUES ((SELECT userid 
         FROM user
         WHERE (usergroupid = 2) OR (usergroupid = 12)), 2, 2)

我曾按以下逻辑思考过:

INSERT INTO subscribeforum (userid, forumid, emailupdate)
VALUES (uid, 2, 2)
WHERE uid IN
(SELECT userid FROM user WHERE (usergroupid = 2) OR (usergroupid = 12))

但是,我不知道正确的完成方法。

有人知道怎么做吗?

试试这个:

INSERT INTO subscribeforum (userid, forumid, emailupdate)
SELECT userid ,2, 2 FROM user WHERE (usergroupid = 2) OR (usergroupid = 12)
GROUP BY userid