题解 | 找出每个学校GPA最低的同学
找出每个学校GPA最低的同学
https://www.nowcoder.com/practice/90778f5ab7d64d35a40dc1095ff79065
SELECT
device_id,
university,
gpa
FROM (
SELECT
device_id, university, gpa,
-- 核心在这里：按学校分组，按gpa升序排，给个排名
RANK() OVER (PARTITION BY university ORDER BY gpa ASC) as rk
FROM user_profile
) as ranked_table
where rk = 1
ORDER BY
university;
