BO XI and the constant change rate analysis

Question

Hello,
We have a BI system (BO XI + Oracle) which contains sales of all countries in the world. All the amount are stored in local currency.
We have a 10 indicators in our univers for these local currency figures and 10 other corresponding indicators for the value in Euro. The exchange rate apply for a currency is annual (and stored in the database for each currency / year)
->if I report a euro indicator for a country on 3 years, 3 exchange rates will be applied to the corresponding years 
ex: for 2007,2008,2009  and Russian sales, the Turnover of the 3 years will be : Amount_2007 * Rate_2007 + Amount_2008Rate_2008 + Amount_2009Rate_2009 (this is the normal behavior of aggregation in BO)
For the business, it's very interesting to see the evolution of sales without the change rate effect (to work with constant change rate). So to do this analysis, I would like to apply the same change rate to the sales of the 3 years to get the amount in Euro
-> (Amount_2007 + Amount_2008 + Amount_2009) * Rate_2008
my question:
is it possible to work in constant rate with BO XI without to have a too complex way to do it for users ? We would like to have an object to put in condition with the values "constant rate" / "yearly rate" of better, an object with a list of years to choose the rate to apply
thanks in advance for your answer !
dansledoute

Answer 1

Hi
I hope you are building query like below
Year | Turnover | Rate
And then Multiplying 
Euro turnover =Turnover * Rate
For Rate measure you can use following expression (You would need to change it as per our table name)
CASE WHEN 'CONSTANT'=@Prompt('Which Type','A',{'CONSTANT','CHANGING'},,,,) THEN
MAX(DECODE(DATE_DIM.YEAR,@Prompt('Which Year','N','Currdim\Year',,,,),RATE.RATE)) OVER (PARTITION BY @Prompt('Which Year','N','Currdim\Year',,,,) )
ELSE MAX(RATE.RATE) OVER (PARTITION BY DATE_DIM.YEAR )
END
Now if data is like below
Rate Table
Curr | YearMnth | Rate
RUB| 201001 | 3
RUB| 201102 | 4
Above expressions will give you rate of selected same year if CONSTANT is selected. i.e.
Year | Turover | Rate
2010 | 3000 | 3
2011 | 4000 | 3
Now you can multiply Rate * Turnover to get constant turnover for 2010 rate. Basically you can create the variable at report with following definition
=([Euro Turover] * [Rate])
Let me know if this solves your issue.
Edited by: Kuldeep Chitrakar on Jun 5, 2011 3:31 PM