SELECT DISTINCT DAY(qpd.date) AS day
,COUNT(DAY(qpd.date)) AS question_cnt
FROM question_practice_detail qpd
WHERE MONTH(date)=8
GROUP BY day
;
#主要得分组
SELECT DISTINCT DAY(qpd.date) AS day
,COUNT(DAY(qpd.date)) AS question_cnt
FROM question_practice_detail qpd
WHERE MONTH(date)=8
GROUP BY day
;
#主要得分组