题解 | 电商平台需要对各行业销售情况综合评估
电商平台需要对各行业销售情况综合评估
https://www.nowcoder.com/practice/120cbc6f87214886bbba80d2b5414786
select industry,sum(sale_amount) total_sales_amount from merchants_underline m join sales_underline s on m.merchant_id = s.merchant_id group by industry order by total_sales_amount desc,industry

