题解 | #某乎问答单日回答问题数大于等于3个的所有用户#

select
    answer_date,
    author_id,
    count(issue_id) answer_cnt
from
    answer_tb
where
    date_format (answer_date, '%Y-%m') = '2021-11'
group by
    answer_date,
    author_id
having
    answer_cnt >= 3
order by answer_date,author_id
;