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), 1) as avg_question_cnt
from
user_profile
group by
gender,
university
order by
gender,
university
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