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
t.goods_id as id,
g.name as name,
g.weight as weight,
sum(t.count) as total
from goods as g
join trans as t on g.id = t.goods_id
where g.weight < 50
group by t.goods_id, g.name, g.weight
having sum(t.count) > 20
order by g.id
#where不能接聚合函数，where不能接聚合函数，where不能接聚合函数
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