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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