题解 | #每类视频近一个月的转发量/率#
每类视频近一个月的转发量/率
https://www.nowcoder.com/practice/a78cf92c11e0421abf93762d25c3bfad
select tag,sum(if_retweet) retweet_cut,round(sum(if_retweet)/count(*),3) retweet_rate from( select a.*,b.tag from tb_user_video_log a left join tb_video_info b using(video_id) where timestampdiff(day,date_format(start_time,'%Y-%m-%d'),'2021-10-01')<30 and uid is not null ) c group by tag order by retweet_rate desc
