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 a.device_id, a.university, a.gpa from user_profile as a right join ( select university , min(gpa) as gpa from user_profile group by university ) as b on a.university=b.university and a.gpa=b.gpa order by a.university#要仔细观察题目中给出的结果输出,大学是按照首字母来排列的,所以最后要order by。 如果是乱序的,用Group by 应该也可以?