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`, count(*) as question_cnt from question_practice_detail where year(`date`) = '2021' and month(`date`) = '8' group by `day`;
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数据库在线编程