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(*) as user_num,
avg(active_days_within_30) as avg_active_day,
avg(question_cnt) as avg_question_cnt
from user_profile
group by gender , university;

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