题解 | #计算总和#
计算总和
https://www.nowcoder.com/practice/d8a624021183454586da94d280cc8046
select order_num, total_price from ( select order_num, sum(item_price*quantity) as total_price from OrderItems group by order_num order by order_num ) t where total_price >= 1000;
先从表中将数据筛选出来，然后再对这个表进行条件查询。
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