select device_id,university, gpa from
(select device_id ,university, gpa, row_number() over(partition by university order by gpa) rn from user_profile ) a
where a.rn=1 order by university ;
(select device_id ,university, gpa, row_number() over(partition by university order by gpa) rn from user_profile ) a
where a.rn=1 order by university ;