题解 | 计算用户8月每天的练题数量
计算用户8月每天的练题数量
https://www.nowcoder.com/practice/847373e2fe8d47b4a2c294bdb5bda8b6
select
day(DATE_FORMAT(date, '%Y-%m-%d')) as day,
count(question_id) as question_cnt
from
question_practice_detail
where DATE_FORMAT(date, '%Y-%m')='2021-08'
group by day(DATE_FORMAT(date, '%Y-%m-%d'))
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