题解 | #某宝店铺动销率与售罄率#
某宝店铺动销率与售罄率
http://www.nowcoder.com/practice/715dd44c994f45cb871afa98f1b77538
select style_id as 商店名称,
round((sum(总销售件数)/sum(inventory - 总销售件数))*100,2) as 动销率,
round((sum(总收入)/sum(tag_price*inventory))*100,2) as 售罄率
from
product_tb join
(select item_id,sum(sales_num) as 总销售件数,sum(sales_price) as 总收入
from
sales_tb
group by item_id) a
on product_tb.item_id = a.item_id
group by style_id
order by style_id;
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这个还是很正常的吧