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
t.device_id,
t.university,
t.gpa
from
(select *,dense_rank()over(partition by university order by gpa asc) as m
from user_profile
) as t
WHERE
t.m=1
窗口函数一目了然
投递美团等公司10个岗位