题解 | #某乎问答11月份日人均回答量#

某乎问答11月份日人均回答量

https://www.nowcoder.com/practice/d1f5a1e50d0b49f3a39eb01c4fdb621f

select answer_date,
round(count(issue_id)/count(distinct author_id),2) as per_num 
from answer_tb 
where month(answer_date) =11
group by answer_date 
order by answer_date 

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