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  
t1.video_id,
round(sum(if(unix_timestamp(t1.end_time)-unix_timestamp(t1.start_time)>=t2.duration,1,0))/count(*),3) rate
from
tb_user_video_log t1
left join
tb_video_info t2
on t1.video_id=t2.video_id
where t1.start_time between '2021-01-01' and '2021=12-31'
group by t1.video_id
order by rate desc

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