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
http://www.nowcoder.com/practice/847373e2fe8d47b4a2c294bdb5bda8b6
select Day(date);是获取日期; select Month(date); 是获取月份; select Year(date); 是获取年份; select Day(date) day,count(question_id) question_cnt from question_practice_detail where month(date) = "08" and year(date) = "2021" group by day;

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