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 user_profile WHERE(university,gpa) IN (SELECT university,MIN(gpa) FROM user_profile GROUP BY university) ORDER BY university;
重点是把大学分组，然后在取每个大学分组的最小值。
