题解 | 分组计算练习题
分组计算练习题
https://www.nowcoder.com/practice/009d8067d2df47fea429afe2e7b9de45
select
gender,university, count(id) as user_num, round(avg(active_days_within_30),1) as avg_active_day,round(avg(question_cnt)) as avg_question_cnt
from
user_profile
GROUP BY gender,university
order by gender,university
