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
http://www.nowcoder.com/practice/90778f5ab7d64d35a40dc1095ff79065
select device_id,university,gpa from ( select * , row_number() over (partition by university order by gpa) as rn from user_profile ) as univ_min where rn = 1 order by university;