题解 | #21年8月份练题总数#
21年8月份练题总数
http://www.nowcoder.com/practice/b8f30b239b454ed490367b53ea95607d
select count(DISTINCT device_id) did_cnt,count(question_id) question_cnt from question_practice_detail
where date >= '2021-08-01' and date <= '2021-08-31'
select count(DISTINCT device_id) did_cnt,count(question_id) question_cnt from question_practice_detail
where MONTH(date) = 8 and year(date) = 2021
select count(DISTINCT device_id) did_cnt,count(question_id) question_cnt from question_practice_detail where date like '2021-08%'
