在sql server中,我们可是使用以下update语句对表进行更新:
update a set a.xx= (select yy from b) ;
但是在mysql中,不能直接使用set select的结果,必须使用inner join:
update a inner join (select yy from b) c set a.xx = c.yy
例:
update mb_tariff a inner join
mb_tariff_temp b set a.payment = b.payment
where a.mybus_id = b.mybus_id
and a.tariff_id = b.tariff_id
自行示例:
UPDATE USER INNER JOIN (SELECT id,account FROM USER) c SET user.phone=c.account WHERE user.id = c.id
原文地址:https://www.cnblogs.com/baobeiqi-e/p/10019978.html
时间: 2024-10-10 08:48:14