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
substring(date,9,2) as day,
count(*) as question_cnt
from question_practice_detail
where date>="2021-08-01" and date<="2021-08-31"
group by date
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