题解 | #商品交易(网易校招笔试真题)#
商品交易(网易校招笔试真题)
https://www.nowcoder.com/practice/f257dfc1b55e42e19eec004aa3cb4174
select g.id,name,weight,sum(count) from goods g inner join trans t on g.id=t.goods_id where weight<50 group by g.id having sum(count)>20 order by g.id asc
如果要select除了groupby的键和聚合函数之外的列，只要该列与groupby的键是一一对应的关系就可以被选择
