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 q.device_id) as did_cnt,
count(q.question_id) as question_cnt
from
question_practice_detail q
where
month(q.date) = 8 ;

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select count(distinct q.device_id) as did_cnt, count(q.question_id) as question_cntfrom from question_practice_detail as q where month(q.date) = 8 and YEAR(q.date)=2021; 这个还要加上年份吧
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发布于 2021-10-15 14:59

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