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 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
记录一下日期函数year(),month(),day()
