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
device_id,
university,
gpa
from(
select
device_id,
university,
gpa,
row_number() over (partition by university order by gpa) as rn
from user_profile
)as ranked
where rn = 1;
利用窗口函数排序 利用序号查找最小值 不要忘记给子查询起个别名alias
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