LeetCode（数据库）- 产品销售分析 III

Posted 2021-08-19 Lux_Sun

题目链接：点击打开链接

题目大意：略。

解题思路：解决方案(1) AC 不了，不过很奇怪，感觉逻辑没错，不知道错在哪里，希望路过的高手看看~

AC 代码

-- 解决方案(1)
SELECT product_id, year first_year, quantity, price 
FROM (SELECT *, ROW_NUMBER() OVER(PARTITION BY product_id ORDER BY year) rnk FROM Sales) RS
WHERE rnk = 1

-- 解决方案(2)
select product_id,`year` first_year,quantity,price from Sales where (product_id,year) in 
(select product_id,min(year) from Sales group by product_id)