题解 | #计算总和#
计算总和
http://www.nowcoder.com/practice/d8a624021183454586da94d280cc8046
1、先分组查询;
2、再按条件查询。
select order_num,sum(item_price*quantity) from OrderItems
group by order_numhaving sum(item_price*quantity)>=1000;
计算总和
http://www.nowcoder.com/practice/d8a624021183454586da94d280cc8046
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