Using aggregates in AGO function

Hello!
I want to use AGO function that would use aggregates.
Requirements:
I want to be able to make year-to-year comparision, where I compare period based on specific dates
This same year-to-year comparision I want to speed up using aggregated fact tables grouped on months level.
I created aggregated SALES table and aggregated time table (group by month) and it works OK with normal queries. It uses aggregated tables when apropriate (possible)
When I use AGO function it always goes to fact table, which time dimension is at lowest level (i.e. date). How can I force BI server to use monthly aggregated tables in AGO function?
Any tip, workaround?
BI server 10.1.3.2.1
Thank you,
Gorazd
Message was edited by:
gor
Message was edited by:
gor

I tested it and in case of AGO function it goes to detailed fact table SALES instead on agg_sales. Any tips?
Gorazd
Message was edited by:
gor

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How can I use AGO function with aggregates

I use aggregated table and a detailed table
I have time hierarchy whose lowest level is date. For sales I
created year-to-year (YTD) comparision with AGO function. It
works OK.
BUT, I want to speed it up, so I used aggregates. I created new
time table grouped by MONTH and corresponding agg_SALES table. I
created connections and mapped the fields. It works OK for
normal queries, that means my queries at month level use
aggregates. BUT when I add YTD measures or YAGO measure in query, it goes to
then SALES table whose grain is date.
How can I force BI Server to use AGO function with aggregates?
I use OBIEE 10.1.3.4
Thank you
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(Question originally taken from ITtoolbox and posted by Gorazd)
SORRY - THE QUESTION IS IN THE WRONG FORUM
Edited by: ishaq12 on Nov 19, 2008 12:21 PM

Hi,
you can not do it in Administration tool but you can set agregation for that field in Answers (fx->Agregation rule->Sum) and effect should be the same. Note that it may not work properly on Oracle 10g as generated SQL is not 100% recognized, on 11g everything is OK (at least in my case).
Regards,
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Edited by: user10449532 on 2008.11.19 06:29

AGO ToDate function not using aggregates

I use aggregated table and a detailed table
I have time hierarchy whose lowest level is date. For sales I
created year-to-year (YTD) comparision with AGO function. It
works OK.
BUT, I want to speed it up, so I used aggregates. I created new
time table grouped by MONTH and corresponding agg_SALES table. I
created connections and mapped the fields. It works OK for
normal queries, that means my queries at month level use
aggregates. BUT when I add YTD measures or YAGO measure in query, it goes to
then SALES table whose grain is date.
How can I force BI Server to use AGO function with aggregates?
I use OBIEE 10.1.3.4
Thank you
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(Question originally taken from ITtoolbox and posted by Gorazd)

Hi,
you can not do it in Administration tool but you can set agregation for that field in Answers (fx->Agregation rule->Sum) and effect should be the same. Note that it may not work properly on Oracle 10g as generated SQL is not 100% recognized, on 11g everything is OK (at least in my case).
Regards,
Marko
Edited by: user10449532 on 2008.11.19 06:29

Proper use of AGO function

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I have to report on cubes that have their data aggregated on the day level. Standard reporting works fine. Now I want to do some historic comparison. I therefore created some calculation columns in Administrator, e.g.
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You can have problem if you are going in a lower level such as week or date but if you stay on the month level, normally you must have the good result.
Check here to have an example of this problem:
http://obiee101.blogspot.com/2009/01/obiee-leap-year-challenge.html
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http://gerardnico.com/wiki/dat/obiee/bi_server/design/dimension/time_dimension_parameters_for_ago_and_td_functions#timecalender_dimension_design_verification
See each punt that are listed under the paragraph Time/Calender Dimension Design Verification. A good time dimension is the key for a good result with the time series function.
Cheers
Nico

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Hi all,
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This is my simple query using aggregate function in it..
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SQL> select * from v$version where rownum = 1;
BANNER
Oracle Database 10g Enterprise Edition Release 10.2.0.5.0 - 64bi
SQL> with table1
2 as
3 (
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5 ),
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7 as
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27       , table2 t2
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karthick user name              100         10
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Message was edited by:
user642387

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Edited by: UserMB on Jun 25, 2009 6:17 AM

Using aggregates in AGO function

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