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
extract(day from date) as day,
count(question_id) as question_cnt
from question_practice_detail
where
extract(year from date)=2021 and
extract(month from date)=8
group by day
查看14道真题和解析