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)
http://www.nowcoder.com/practice/f257dfc1b55e42e19eec004aa3cb4174
select g.id,g.name,g.weight,sum(t.count) as total
from trans t
join goods g
on t.goods_id=g.id
where g.weight<50
group by t.goods_id
having total>20
order by g.id asc
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