题解 | #分组计算练习题#
分组计算练习题
https://www.nowcoder.com/practice/009d8067d2df47fea429afe2e7b9de45
select up.gender,up.university,count(*) as user_num,avg(up.active_days_within_30) as avg_active_day,avg(up.question_cnt) as avg_question_cnt from user_profile up group by up.university,up.gender;
