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
with f as (select tvi.video_id
, if(timestampdiff(second, tuvl.start_time, tuvl.end_time) >= tvi.duration, 1, 0) as play
from tb_user_video_log tuvl
inner join tb_video_info tvi using (video_id)
where year(tuvl.start_time) = '2021')
select video_id
, round(sum(play) / count(play), 3) as avg_comp_play_rate
from f
group by video_id
order by avg_comp_play_rate desc;
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