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) as day,
count(question_id) as question_cnt
from question_practice_detail
where year(date) = 2021 and month(date) = 08
group by day(date)
查询条件有多种方式:
1.可以限定在八月一号到九月一号之间；
2.模糊查询:where date like '%2021-08%'
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