Logical Column in BI Administration

Hello experts!
I need a calc on bi administration using Time Dimension.
My situation is as follow:
I have a Time Dimension (Year, Month, Day), another Dimensions and a measure called Quantity.
I have created different logical calcs with Quantity and Time Dimension:
Quantity Year Cumulative, Quantity Month Cumulative, Quantity Previous Year, Quantity Previous Year Cumulative.
Now I have to create : Quantity Month Cumulative Previous Year...and I have problems...because I have an error when I check consistency on Bi administration. (I have used formula AGO and TODATE to get the formula)
Anybody can help me???
Thank you very much

My formula is:
Ago(ToDate("Consulting"."Quantity" , "Dim TimeM"."Month") , "Dim TimeM"."Anio" , 1)
and I have this error when I have this calc in presentation layer: NQsError 22044: " Functions AGO and TODATE don't let different levels on Time Dimension like Month / Year"

Similar Messages

URGENT: Paradox "Logical" Column Lost in HS translation to Oracle 8.1.7.3

I have a Paradox table with several fields. One field is a Logical Column.
Although I can see the paradox table through my HS set-up, I cannot see the
Logical column. Additionally, I can not select from it either.
Has anyone encountered this scenario, and if so, what is the
fix?
Ato Arkaah
Oracle 8.1.7.3
Paradox 4,5,9
ODBC MS Paradox Driver

Please check what the logical ODBC datatype this logical column is translated to and verify if Generic Connectivity supports that datatype or not.
I believe it converts to SQL BIT and Generic Connectivity does not support this datatype.
The datatypes that we support are listed in Chap 7 of the Heterogeneous Connectivity Administrator's Guide.
http://otn.oracle.com/docs/products/oracle9i/doc_library/release2/server.920/a96544/gencon.htm#1004703

Changes to Derived Logical Column not reflected in Answers

Before I go off my rocker and stab myself with my IPhone lightsabre... :-)
I created a new logical column for an existing table in my BM, deriving from an existing column (a datetime field called ESTIMATEDCLOSE) as follows:
MONTHNAME(Sales.OPPORTUNITY.ESTIMATEDCLOSE) || ' - ' || CAST(Year(Sales.OPPORTUNITY.ESTIMATEDCLOSE) AS CHAR(4))
...which should give me something like "Jan - 2008". The problem is that it returned something like "2008/01/31 00:00:00" in Answers - completely unexpected.
I decided to start out small and try something simpler, changing my derived column to be only Sales.OPPORTUNITY.ESTIMATEDCLOSE. This returned "2008/01/31 00:00:00" in Answers - sort of expected.
Then I changed it to MONTHNAME(Sales.OPPORTUNITY.ESTIMATEDCLOSE). This also returned "2008/01/31 00:00:00" in Answer!!!
It almost seems as if a derived logical column is cached in some weird way and changes to the formula is not reflecting in answers. Thinking that something so simple must work and I made a simple mistake somewhere I have spend a good part of the past day playing around with this and trying every possible solution I can think of - no luck. The odd thing is that I would rename my logical column and this will be reflected in Answers, but changes to the derived expression is not reflected.
- I deleted the column and started all over - no luck
- tried creating derived columns using different datetime expressions or even just concatenating strings to each other - no luck.
- Restarted all the Oracle services, thinking it's a cach'ing issue - no luck.
- I rebooted the server - no luck.
Once, when I started out with only MONTHNAME(Sales.OPPORTUNITY.ESTIMATEDCLOSE) I got back correct values in Answers (Jan, Feb, Mar..) and I thought the problem was finally gone. So I added || ' - ' || CAST(Year(Sales.OPPORTUNITY.ESTIMATEDCLOSE) AS CHAR(4)) to the derived formula. Guess what, Answers kept on giving me back only the Month names, completely ignoring my updated formula.
Anybody else ran into this problem? Something so simple should surely work...

John,
Yes, cleared the cache (from Dashboard Administration) and also used nqcmd Call SAPurgeAllCache. Restarted BI Server. Still no luck.
I tried your formula and then only got back "2008/01/31" (just the date without the timestamp) - very strange.
Then I noticed the following amazing thing (by accident):
I started with a request in Answers that does not contain my derived column and then add my derived column to the report. The text would be all wrong in this column (Jan, Feb, March). Then I add the same column again to the report and the second added column will magically show the correct strings (Jan - 2008) !!! Even stranger is that the moment I added the same column again to the report, the text on the first column would also magically jump to the correct values (Jan - 2008).
I did a bit more testing and created a blank request and added my derived column as the only column - this time it will show the correct values immediately. It does seem like it's tied to the content already in the request. I went a step further and saved my buggy request and added it to a Dashboard - it worked perfectly in the Dashboard.
Must be something buggy here in Answers when working with derived columns. I'm on 10.1.3.4...

URGENT: Paradox "Logical" Column Lost in HS

We have a problem with our HS. "Logical" Paradox columns are not available
via the HS link from Oracle (i.e. DESC shows all columns but the "Logical",
and we can select from all columns but the logical one).
Is there a solution to this?
Ato Arkaah
Oracle 8.1.7.3
Paradox 4,5,9
MS ODBC driver for Paradox

Please check what the logical ODBC datatype this logical column is translated to and verify if Generic Connectivity supports that datatype or not.
I believe it converts to SQL BIT and Generic Connectivity does not support this datatype.
The datatypes that we support are listed in Chap 7 of the Heterogeneous Connectivity Administrator's Guide.
http://otn.oracle.com/docs/products/oracle9i/doc_library/release2/server.920/a96544/gencon.htm#1004703

"On time pick rate" logical column defined as INT instead of DOUBLE

Hi,
I noticed that there is a problem with the indicator "Top 10 Plants by Pick Rate". The calculation of this formula results in a decimal number indicating the number of selections made in time in relation to the total number of selections. However, in the "Business Model and Mapping" in "Oracle BI Administration Tool", the Logical Column "On time pick rate" (Core.Fact - Sales - Pick Line) is defined as INT (integer). This produces a truncation of the information and the indicator always displays 0 (zero).
You think this is a bug or is the expected behavior?
Regards

I have the same problem also. I'm using VC++6.0 and ADO 2.71 to perform queries with an Oracle Client 9.2.0.1. The same query on same table but on different Server version returns different results. With the production server, which is an 8.1.7.4 server, a NUMBER column returns a LONG value, while on the Test server, which is a 9.2.0.5.0 server, the same column returns a DOUBLE value. The problem is that using ADO I don't check data type/size when getting values, but I aspect a LONG value because a created the column with NUMBER specification. Could this be a different default from previous server version when creating the NUMBER column without any SCALE and PRECISION attributes?

How to create Measue Logical Column in fact?- urgent

Hi All,
In BMM Layer i have 2 Fact Tables with Different Sources .
Fact - Fact1
X1
Fact - Fact2
Y1
But now I want to create Logical Column in 'Fact - Fact 2' as follows
Z1 = X1 + Y1
But Once aftre cretaion of that Column , from the Report side i can able to see the data only if the report contains Z1 Attribute alone.
But if the report contains any other attribute along with Z1... that Z1 doesnt have any Data .. its Blank.
How can i resolve this issue ?

Have you all conformed dimensions between the two facts?

At max how many logical columns can be created in RPD

Hi All,
At max how many logical columns can be created in RPD. I have a requirement of creating 200 columns. Will there be any problem .
Is there any predefind number of columns for RPD creation??
Please help ..

Hi Annapurna,
There's no limit that I'm aware of or which is mentioned anywhere. Just as an example: I have a logical fact table with around 750 logical columns (>500 original measures & 250 derived measures). No issue whatsoever. Opening the presentation table through answers takes about 2-3 seconds (the NQSQL command has a lot to retrieve), but that's about it.
Cheers,
C.

How to change the variable value at run time in logical column in RPD

for e.g..
i have used a session variable in logical column in rpd in case statement. now in dashboard prompt i am using that variable to store data which user is passing but the data captured is not getting reflected in the logical column.
its been always populated with the default value passed through the initilization block..

resolved myself

Display values for logical columns with several physical sources

Hi all,
I'm enocuntering some strange behaviour with the values displayed for a column (when we want to add it a as a filter, and in the dialogue box select 'Show All' values).
Basically the logical column is mapped against several physical columns as the base fact table is aggregated to different levels. Additionally, one column in the fact tables has an attribute value, and these vary between the aggregated and non-aggregated table. This is not a problem.
In the production environment, when we display the all values in the filters prompt for this column we are seeing the values being taken from one fact table. Naturally this means that not all the values possible for this column are being shown (i.e. values from the aggregated fact tables are missing). Now in one of our test environment where those fact tabels have additional data loaded, the values are being taken from one of the other fact tables. Unfortunately it is not necessarily the fact table with less data.
My questions are:
a) What dictates which fact table the server will use when the query in Answers doesnt use any dimensions (i.e. we are selecting just this attribute and selecting all the possible values by which it can be filtered)?
b) Is there a way of obtaining all the values from the differente physical columns? I.e. that the display values shows the values of that logical column across all the physical fact tables? Maybe we would need to model that attribute as a logical dimension just for that attribute? Im not really sure this would work, as at the physical level the join between the dimension and fact would still have to go to only one particular fact table.
Any info or help is much appreciated.

Hi,
Aggregate tables exist at physical level and are created by ETL procedures. Although i am aware that the dimension come into play when the application needs to decide which source aggregate table to use, it is not an issue here as in our query we are not involving dimensions. We are selecting just this one columen, and then the filter option on this column, then in the dialogue box we select 'All Choices', only the values from one of the source tables is being shown.
This is not a probelm within reports, i think it is a product limitation in that in that option to list all values a user can filter by, it is not possible to display all the values from the different fact tables to which that column is mapped.
Has anyone else encountered this behaviour?

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!

How to create logical columns for current period and prior period

Hello all.
Is there any way in obiee to create a new logica column in BMM layer that says "CURRENT PERIOD" AND "PRIOR PERIOD" OR ONE SINGLE COLUMN THAT SAYS "PERIOD".
In those columns what I need is if it a current period column it shoould have 03/01/2012-03/31/2012 (this month date range)
and in prior period column I shouldhave 02/01/2012 -02/29/2012(which is previous month date range).These columns I will be using in my reports.
Please help me if we can create any such columns with these conditions/requirements

Hi,I have already created he dynamic variables.But I am not getting how to use those variables and create the new logical columns in bmm layer.
this is what I am trying
case when VALUEOF("Current Month begin date"."Current Month begin date") ='..' and VALUEOF("Current Month end date"."Current Month end date")
='..' then 'current period' end
I don't really understand what I should write case when VALUEOF("Current Month begin date"."Current Month begin date") ='..'??

How To Create Logical column For Lastyear To Till Date

Hi All,
I Have to calculate Lastyear to Till Date for Logical Column.
Ex:I have Time Dime and Fact column and Dimension columns.
jan 2011 to oct 2012.
Please Let me know.
Thanks,
Abhi

Looks like you are not reading my messages
Since you are doing on logical columns getting this error.
Try this using physical columns then count from aggregate tab
CASE WHEN "Oracle Data Warehouse"."Catalog"."dbo"."Fact_W_SRVREQ_F_Open_Date"."OPEN_DT_WID" > 20110101 THEN "Oracle Data Warehouse"."Catalog"."dbo"."Fact_W_SRVREQ_F_Open_Date"."SR_WID" END
The same you can go with your variable
Or else the same can do by duplicating the existing Fact - CRM - Service Request"."# of SRs" and just add above code.
or just use the below you dont use sum since already aggregation is happend for # of SRs
CASE WHEN "Core"."Dim - Date"."Year" = VALUEOf("Warehouse Refresh Date Last Year"."CURRENT_CALENDAR_YEAR_LAST_YEAR") AND "Core"."Dim - Date"."Date" < VALUEOF("Warehouse Refresh Date Last Year"."LAST_REFRESH_DATE_LAST_YEAR") THEN "Core"."Fact - CRM - Service Request"."# of SRs" END
Hope this works, mark as correct

Logical Column(s) a.k.a. Pre-calculated Measures

I am looking for best practices around logical columns either in Presentation Layer or Business Layer. Specifically I want to know..
1) Is it advisable to have logical columns?
2) How many are good to have? Should one create logical columns for all frequent calculations which are done on dashboards?
3) Are there any performance implications?
4) Can we use Time Series function with logical columns? Like AGO etc.
In short I am looking for intelligent pros and cons of such implementations.
PS: Logical columns are derived from physical columns. For e.g. Profit = Income - Expense.
Regards.

Hi
1) all complex logic should be in the BMM layer in the RPD. Yes, it's advisable to have them in the BMM. Although another good practice is to try to delegate all complex calculations to ETL if possible.
2) As many as deemed necessary. Yes.
3) No, not really. But if you use Answers' logical columns - you have to be creative in propagating them to other reports.
4) Yes you can. But again, this is something that's better to have in the RPD.

Logical Columns - Running Sum & 3Month Rollover

Hi All,
Need to build a logical column.
I have a column with number of units (count distinct) in RPD.
I need to build a new logical column in the REPOSITORY , such that it has running sum values.... sothat when i pick this #units column and months column in the ANSWERS...I need to get roll over of all previous values for first month.
Say Jan ---> XXXX units ( summation of all previous available units - few years)
Feb----> YYYY units ( sum of till jan values & Feb units)
Mar----> ZZZZ ...etc ( sum of till Feb values & Mar units) so on.
Based on this newly built column I need to build another column of " 3 months roll over " column.
Replies appreciated.
Thanks in advance.

Hi user11939829m
So help me understand your new measures a little better. For the sake of this post, let's say your data is like so
Month Year -- Units
Jan 2010 -- 1
Feb 2010 -- 2
Mar 2010 -- 3
Apr 2010 -- 4
May 2010 -- 5
Jun 2010 -- 6Then let's say you have a report with the above columns and the new running sum columns.
Month Year -- Units -- Running Sum Units
Jan 2010 -- 1 -- 1
Feb 2010 -- 2 -- 3
Mar 2010 -- 3 -- 6
Apr 2010 -- 4 -- 10
May 2010 -- 5 -- 15
Jun 2010 -- 6 -- 21Now what exactly would your three months rollover be? Would the 3 month rolling sum = running sum for current month + running sum for last month + running sum for last last month?
i.e.
Month Year -- Units -- Running Sum Units -- 3 Month Rolling Sum
Jan 2010 -- 1 -- 1 -- 1
Feb 2010 -- 2 -- 3 -- 4
Mar 2010 -- 3 -- 6 -- 10
Apr 2010 -- 4 -- 10 -- 19
May 2010 -- 5 -- 15 -- 31
Jun 2010 -- 6 -- 21 -- 46Not sure what value such a measure would add. Or do you mean 3 month rolling sum would be the running sum for just the last three months (like below)? This makes more sense but in your description, you indicated that you'd build the 3 month rolling sum off of the running sum which confused me a bit.
Month Year -- Units -- Running Sum Units -- 3 Month Rolling Sum
Jan 2010 -- 1 -- 1 -- 1
Feb 2010 -- 2 -- 3 -- 3
Mar 2010 -- 3 -- 6 -- 6
Apr 2010 -- 4 -- 10 -- 9
May 2010 -- 5 -- 15 -- 12
Jun 2010 -- 6 -- 21 -- 15 Is that what you are going for? Please elaborate.
Best regards,
-Joe

Logical column currency format properties at rpd level?

I need to show the currency amount with dollar symbol for a logical column and that should happen at rpd level.
Is there anyway we could do that ?
thank you

Hi User.
You can have logical column name as 'Amount in $' or 'Amount in Dollar'
this is the best practice..
Then if you want value to be suffixed by $ , you can go for data formatting in column properties.....
this is commonly used....
mark if Correct/helps .
fiaz

Logical Column in BI Administration

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