题解 | #统计作答次数#

统计作答次数

http://www.nowcoder.com/practice/45a87639110841b6950ef6a12d20175f

select count(id) as total_pv ,count(case when submit_time is not null then id end) as complete_pv ,count(distinct case when submit_time is not null then exam_id end) as complete_exam_cnt from exam_record

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10-17 12:16
同济大学 Java
7182oat:快快放弃了然后发给我,然后让我也泡他七天最后再拒掉,狠狠羞辱他一把😋
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