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fact with start and end date

fact with start and end date

fact with start and end date

(OP)
Transactions in my source system have start and end dates. In other words, a transaction/fact is valid during a time period specified by start and end date. so for example, suppose there are two transactions in the source system as following:

(Tran-name:T1 , start-date:   "1/1/2009"      , end-date : "5/1/2009" , Tran$ : $150)
(Tran-name:T2 , start-date:  "1/1/2009"      , end-date  :"2/25/2009", Trans$:  $200)

In this case, when a reporting period of Jan 2009 to March of 2009 is selected, and Month attribute is included in the report, the report should look like the following:

Month     Tran-count          Tran$
Jan             1             $150
Jan             1             $200
Total           2             $350   
Feb             1             $150
Feb             2             $200
Total           2             $350
March          1            $150
Total           1             $150  
Grand TOTAL  2        $350

Any ideas about how to implement the Tran$ and Tran-count metrics ?
 

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