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(q.date) day,count(device_id) question_cnt from question_practice_detail q where q.date between '2021-08-01' and '2021-8-31' group by q.date;
