题解 | #2021年11月每天的人均浏览文章时长#
2021年11月每天的人均浏览文章时长
https://www.nowcoder.com/practice/8e33da493a704d3da15432e4a0b61bb3
select date(in_time) as dt,
round(sum(timestampdiff(second,in_time,out_time))/count(distinct uid),1) as avg_viiew_len_sec
from tb_user_log
where extract(year_month from in_time)='202111' and artical_id <> 0
group by dt
order by avg_viiew_len_sec asc
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