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mysql 如何实现多表联合更新

WBOY
WBOYOriginal
2016-06-01 09:57:101160browse

案例如下:

现在有一张user表,还有一张userinfo表。想将userinfo表里面的一个remark字段更新到user表中的remark字段。

那么怎么操作呢?这里就要用到MySQL的多表联合更新。

<code class="language-sql">update user,userinfo set user.remark=userinfo.remark where user.id=userinfo.id</code>

注意,这里user表和userinfo表,我都假设有一个id是唯一键来进行关联的。

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