Logical column levels and aggregation

Hi all,
In order to have reliable results, I had to specify a dimension level in a logical column properties.
As a consequence, the generated query includes this level in the query (that's great), but no aggregation is performed afterwards. Therefore, when I display this measure alone in a flat table or a ticker, I have a set of detailed value instead of an aggregated value. The only place where I can see my aggregated value is in a pivot table.
In answers, I tried to :
- replace the default aggregation by an explicit SUM, or
- add a SUM() in the measure formula
but neither solved the issue.
Does anyone know how to solve it?
Thanks in advance.
Ced.

Hi,
What is the source for AGO measures PriorDollars and PriorUnits?
AGO(CurrentUnits, '?',?)
AGO(CurrentDollars, '?',?)
Have you set up hierarchy correctly (because you said that the granularity in your fact table is at week grain) and it should be like this:
Fiscal Year > Fiscal Quarter > Fiscal Month > Fiscal Week
It depends on how did you define your TIME dimension.
Try maybe like this:
PriorYEARDollars = AGO(CurrentUnits, 'YEAR',1)
and the same for
PriorYEARUnits =AGO(CurrentDollars, 'YEAR',1)
Now, if you put in the report
YEAR
CurrentUnits
CurrentDollars
PriorYEARUnits
PriorYEARDollars
you'll get only three rows (for 3 years) with PRIOR YEAR measures.
Try it.
A good reference for understanding AGO:
http://obiee101.blogspot.com/2008/11/obiee-ago-and-todate-series.html
Also you need to set chronological key correctly for TIME dimension.
Regards
Goran
http://108obiee.blogspot.com

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Facts at different Logical Dimension Level and Default Interaction (Drill)

I have one Geography Logical Dimension that consists of 3 physical tables snowflaked. The 3 tables are City, State and Country. I have created 3 Level Based Hierarchies.
I have 2 Facts. Fact_State is at the State grain only (Set the appropriate Content Level). Fact_City is at the City grain (Set the appropriate Content Level).
When I pull a query with Country and a metric from Fact_State, the default interaction allows me to drill down. I drill into the State values. I would assume that the Drill interaction would stop here since this metric (Fact_State) is only at this level.
What actually occurs is it allows for a drill into City and when you look at the Physical SQL it is trying to hit the other Fact Table (Fact_City) and pulls back no metrics. I then return no data.
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You need to have a metric sourcing from both Fact_State and Fact_City, provided both facts are as Logical sources for the logical fact table.
Make sure Fact_State got proper level and Fact_City got detail level.
When you pull Country or State with metric query should hit Fact_State, when you drill down below the state query should be from Fact_City with proper data.
Edited by: Srini VEERAVALLI on Mar 28, 2013 2:43 PM
I can look into your new post only If you update this or older posts. Still you may get responses from others ;)
Edited by: Srini VEERAVALLI on May 22, 2013 2:00 PM

Why logical column in terms of other logical columns and not physical sourc

Hello
Can someone shed some light that in what scenario ..defining a logical column in terms of other logical column is beneficial compared to defining logical column in terms of physical sources?
I found something on google that said defining in terms of logical columns is like one time thing. I dont understand, even if you define in terms of physical source that' too one time.
In both the case we build an expression specifying which logical or physical columns.
Thank you

well logical columns from physical source, if in logical fact table you can set aggr rules. Logical columns based on other logical columns you can not. Logical columns based on other logical columns will inherit the aggr rules. So for instance, if you create col1 and col2. Both based off physical and both having sum aggr rule. If you create logical column col3 based off these two as such "col1"/"col2" it will produce the following sum(col1)/cum(col2). Now if you really wanted sum(col1/col2) then you should have made col3 based off physical as col1/col2 with aggr rule of sum.
Also of some note, all logical columns based off physical will be performed in the inner most query. So for my example above to get col3 where it is logical col1/logical col2 or sum(col1)/sum(col2) the physical query will be:
select D1.c1/D1.c2
from (
select sum(col1) as c1,
sum(col2) as c2
from tableA
) D1
So my short summary of this, is what or how do you want your sql to be created. Based on this can you lead you to your answer of whether to use logical col based on physical or other logical columns. And unltimately, check the sql generated from your work to ensure the sql queries generated are what you want and expect.
I hope this helps!

Report with non aggregated and aggregated columns from different facts.

Hi,
We have got requirement as follows,
1) We have two dimension tables, and two fact(Fact1 and Fact2) table in physical.
2) In BMM we have made hierarchies for both dimensions, and are joins both logical fact table.
3)In fact1, we are having three measures of which we have made two as aggregation sum, and one is non aggregated(It contains character).
4)Fact2 have two measures, both are aggregation as sum.
5)Now here the problem arises, we want to make a report with some columns from dim and non aggrgated column from fact1 and and aggregated column fact2
How to resolve the above issue.
Regards,
Ankit

As suggested you really want to move your none-aggregated fact attributes to a logical dimension (using the same physical table as the logical fact). Map this in the BMM layer as a snowflake, Place a hierarchy on this dimension with (at minimum) Total -> Detail levels, then on the other fact table you want to include in the report, set the content level on your other fact measures to the 'Total' level for your new logical Dim and it will allow them to be present in the same report.

Logical Column Aggregation

I have CurrentDollars and CurrentUnits in my measures table, and I"ve created PriorDollars and PriorUnits logical columns utilizing the AGO function. Since 'Use existing logical columns as the source' is checked, I don't have access to the Aggregation tab, and everything I've read leads me to believe that this is OBIEE's way of forcing inheritance of the aggregation rule of the 'source' column.
Problem is, the Prior* columns don't aggregate (sum). If I create a report with Year, CurrentDollars, CurrentUnits, I get three rows... one row for each year that has data. That's what I want. But when I add either of the Prior columns, I get 52 rows per year (since my data is at the week level). If I wrap either of the Prior columns in SUM, it sums all Prior* column values. If I check the box that says I want it to use Sum aggregation, nothing changes. I get similar bogus results if I add a SUM function around the original AGO function.
This is a real drag. Am I missing something obvious? Some blogs lead me to think that this is a known bug. Does anyone have a workaround?
Edited by: Tom G. on Aug 26, 2009 11:30 AM

Hi,
What is the source for AGO measures PriorDollars and PriorUnits?
AGO(CurrentUnits, '?',?)
AGO(CurrentDollars, '?',?)
Have you set up hierarchy correctly (because you said that the granularity in your fact table is at week grain) and it should be like this:
Fiscal Year > Fiscal Quarter > Fiscal Month > Fiscal Week
It depends on how did you define your TIME dimension.
Try maybe like this:
PriorYEARDollars = AGO(CurrentUnits, 'YEAR',1)
and the same for
PriorYEARUnits =AGO(CurrentDollars, 'YEAR',1)
Now, if you put in the report
YEAR
CurrentUnits
CurrentDollars
PriorYEARUnits
PriorYEARDollars
you'll get only three rows (for 3 years) with PRIOR YEAR measures.
Try it.
A good reference for understanding AGO:
http://obiee101.blogspot.com/2008/11/obiee-ago-and-todate-series.html
Also you need to set chronological key correctly for TIME dimension.
Regards
Goran
http://108obiee.blogspot.com

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In SharePoint Calendar lists, fields [Start Time] and [End Time] do not exist at the Site Column level.

<header style="box-sizing:border-box;color:#777777;line-height:1;font-size:13px;padding-right:46px;margin-bottom:3px;font-family:'Helvetica Neue', arial, sans-serif;">
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Hi Khojasteh,
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Thanks,
Qiao
Forum Support
Please remember to mark the replies as answers if they help and unmark them if they provide no help. If you have feedback for TechNet Subscriber Support, contact
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[https://picasaweb.google.com/105903262683032369187/OBIEE?authkey=Gv1sRgCPW2qu2x8eKdjgE]
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Logical column levels and aggregation

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