题解 | 了解 2023 年全年所有商品的盈利情况
了解 2023 年全年所有商品的盈利情况
https://www.nowcoder.com/practice/05cbbb8662c14b46a15cbcb8993d9277
select s.product_id , sum((unit_price-purchase_price)*quantity) total_profit , round(sum(unit_price-purchase_price)/sum(purchase_price)*100,2) profit_margin from sales_orders s left join purchase_prices p on s.product_id = p.product_id group by 1