LeetCode（数据库）- 找出每所学校的最低分数要求

Posted 2022-02-07 程序员牧码

题目链接：点击打开链接

题目大意：注意需要体现出“学校也希望尽可能多的学生能申请该学校”，很多答案解析并没体现出这一条，反而凑巧也过了，估计是测试用例不够全。

解题思路：略。

AC 代码

WITH t AS(SELECT school_id, score, RANK() OVER(PARTITION BY school_id ORDER BY capacity - student_count, score) rk
FROM Schools JOIN Exam
WHERE capacity - student_count >= 0)

SELECT s.school_id, IFNULL(score, -1) score
FROM Schools s LEFT JOIN t ON s.school_id = t.school_id AND rk = 1