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 device_id,university,gpa, row_number() over (partition by university order by gpa) as ranking from user_profile ) as rk where ranking=1;
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