题解 | #商品交易(网易校招笔试真题)#

select t.goods_id id,g.name,g.weight,t.total from 
(select distinct goods_id, sum(count) over(partition by goods_id )  as total 
from trans) t
inner join goods g
on g.id=t.goods_id
where g.weight<50 and t.total>20
order by id