update user_money set user_money = (user_money_exchange 当ordertag =1的 sum(money) + 当ordertag =2的 sum(money)) where user_money.u_id = user.userid
update user_money
set user_money.money =
(select sum(ume.money) as m , u.userid from user_money_exchange ume left join user u on ume.username = u.username where ume.ordertag = 1 group by ume.username
+
select sum(ume.money) as m , u.userid from user_money_exchange ume left join user u on ume.username = u.username where ume.ordertag = 2 group by ume.username)
where user_money.u_id = u.userid
这个是错的,想知道对的是?谢谢各位了
sqlselectupdate
分享到: ------解决方案-------------------- 试试
update user_money um left join user u on um.u_id=u.userid
left join
(select username,sum(money) as moneys from user_money_exchange group by username) ume
on ume.username=u.username
set um.money = ume.moneys
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