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 # 使用 day(date) 取出日期 from question_practice_detail where month(date) = 8 # 筛选八月的所有练题数 group by date; # 以日期分组
