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
with a as(
select *,row_number()over(partition by university order by gpa) rk
from user_profile
)
select device_id,university,gpa
from a
where rk=1
用排名窗口函数加了一列做过滤。
