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
ul.video_id,
round(avg(if(timestampdiff(second,start_time,end_time)>=duration,1,0)),3) avg_comp_play_rate
from tb_user_video_log ul
join tb_video_info vi on ul.video_id = vi.video_id
where year(start_time)=2021
and year(end_time)=2021
group by video_id
order by avg_comp_play_rate desc
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