题解 | #各个视频的平均完播率#

select t1.video_id video_id, round(avg(case when timestampdiff(second, t1.start_time, t1.end_time) >= t2.duration then 1 else 0 end), 3) avg_comp_play_rate
from tb_user_video_log t1 inner join tb_video_info t2
on t1.video_id = t2.video_id
where YEAR(t1.start_time) = 2021 and YEAR(t1.end_time) = 2021
group by t1.video_id
order by avg_comp_play_rate desc