题解 | #某乎问答单日回答问题数大于等于3个的所有用户#
某乎问答单日回答问题数大于等于3个的所有用户
http://www.nowcoder.com/practice/821e5072663f485f8204cf03b89d322a
这题比较基础，题解如下：
select
answer_date,
author_id,
count(issue_id) as answer_cnt
from answer_tb
where date_format(answer_date,'%Y-%m')='2021-11'
group by answer_date,author_id
having count(issue_id)>=3
order by answer_date,author_id
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