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
http://www.nowcoder.com/practice/847373e2fe8d47b4a2c294bdb5bda8b6
select
substr(date, 9, 2) as day,
count(1) as question_cnt
from
question_practice_detail
where
substr(date, 1, 7) = '2021-08'
group by
substr(date, 9, 2)
substr(date, 9, 2) as day,
count(1) as question_cnt
from
question_practice_detail
where
substr(date, 1, 7) = '2021-08'
group by
substr(date, 9, 2)
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