以下查询为我提供了两列的输出:
Day Num_Users_Retained
0 209312
1 22139
2 11457
等等,一直到259(2012年的每一天)..但是我希望第0天在num_users_retained中包含所有值的总和,从0到259 ......然后我想要第1天包括1-259中所有值的总和,依此类推,直到我到达最后一天。这是原始查询:
--Retention since January 1,2012--
select retention as Day,count(retention) as Num_Users_Retained
from (select player_id,round(init_dtime-create_dtime,0) as retention
from player
where Trunc(Create_Dtime) >= To_Date('2012-jan-01','yyyy-mon-dd')
and init_dtime is not null)
Group by retention
order by 1
有什么建议吗?
答案 0 :(得分:2)
使用分析功能
select
day,
num_users_retained,
sum(num_users_retained) over (order by day) as total_num_users_retained
from churn
http://www.sqlfiddle.com/#!4/24e02/1
此查询将写入结果集。您可以将其应用于原始查询。
答案 1 :(得分:1)
select retention as Day
, Sum(count(retention)) over(order by retention desc) as Num_Users_Retained
from (select player_id
, round(init_dtime-create_dtime,0) as retention
from player
where Trunc(Create_Dtime) >= To_Date('2012-jan-01','yyyy-mon-dd')
and init_dtime is not null
)
Group by retention
order by retention