SQL Server Update 根据自身表不同记录的值修改,链表修改

一、自链接方式

update b1 set b1.money = b1.money + b2.money 
from (select * from wallet where type=‘余额‘) b1 inner join 
(select * from wallet where type=‘积分‘) b2 on b1.userId= b2.userId

二、表链接

update r set r.cEnable = 0 from 表1 r 
inner join 表2 t on t.cId = r.cId 
where r.cRow = 100