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

with a as(select 
g.id,g.name,sum(t.count) as cc
from
goods as g join trans as t on g.id=t.goods_id
group by g.id
)
select
goods.id,goods.name,goods.weight,a.cc as total
from goods join a on goods.id=a.id
where a.cc>20 and goods.weight<50;

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