现有两张表,A是明细表
id uid cost
0
1
4
3
现在要把把该表中cost大于0的数据,根据uid分组然后更新到另一个表上
select uid,count(cost) as count from A group by uid where cost > 0
这是取出的语句,有没办法一句话把这个查询结果根据uid更新到另一张表上?
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