题解 | #各个视频的平均完播率#
各个视频的平均完播率
https://www.nowcoder.com/practice/96263162f69a48df9d84a93c71045753
select video_id,
round(sum(case when timestampdiff(second,start_time,end_time)>= duration
then 1 else 0 end )/count(*),3) as avg_comp_play_rate
from tb_user_video_log join tb_video_info using(video_id)
where year(start_time) =2021
group by video_id
order by avg_comp_play_rate desc
主要是注意完播率的定义。
