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
https://www.nowcoder.com/practice/847373e2fe8d47b4a2c294bdb5bda8b6
select day(date) as day,###返回day count(question_id) as question_cnt###返回答题数量 from question_practice_detail where month(date) = '8' and year(date) = 2021###筛选年月 group by day(date),month(date);###按月，日分组统计
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