题解 | #21年8月份练题总数#
21年8月份练题总数
https://www.nowcoder.com/practice/b8f30b239b454ed490367b53ea95607d
select count(distinct device_id) as did_cnt,count(id) as question_cn # ,count(id) as question_cnt from question_practice_detail where date like '2021-08-%'
