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esilva32's avatar
esilva32
Frequent Visitor
7 years ago
Solved

DAX Calculation

Hello guys I am performing a calculation with DAX on power BI and would like to know if anyone could help me. My data is in table A and the results I want are in table B. Best regards, Thank you ...
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  • AlB's avatar
    AlB
    7 years ago

    Hi esilva32

     

    It certainly looks like it would be easier to do this in the query editor. If you do need to do it in DAX, try this. Create a new calculated table:

     

    TableB = 
VAR _BaseTable =
    ADDCOLUMNS (
        GENERATE (
            DISTINCT ( TableA[Id] );
            GENERATESERIES (
                CALCULATE ( DISTINCT ( TableA[StartDate] ) );
                CALCULATE ( DISTINCT ( TableA[EndDate] ) )
            )
        );
        "TempVal"; CALCULATE ( DISTINCT ( TableA[Value] ) )
    )
VAR _Dates =
    DISTINCT ( SELECTCOLUMNS ( _BaseTable; "Date"; [Value] ) )
VAR _ResTable =
    ADDCOLUMNS (
        _Dates;
        "Total Value"; SUMX ( _BaseTable; IF ( [Value] = [Date]; [TempVal] ) )
    )
RETURN
    _ResTable

     

     

     

  • esilva32's avatar
    esilva32
    7 years ago

    Hello guys

    Thank you for your help. @AIB thank you, worked perfectly, thanks for the help.

    Regards, Portugal.

  • AlB's avatar
    AlB
    7 years ago

    esilva32

     

    Minor modification:

     

    TableB =
VAR _BaseTable =
    ADDCOLUMNS (
        GENERATE (
            DISTINCT ( TableA[Id] );
            GENERATESERIES (
                CALCULATE ( DISTINCT ( TableA[StartDate] ) );
                MIN ( TODAY (); CALCULATE ( DISTINCT ( TableA[EndDate] ) ) )
            )
        );
        "TempVal"; CALCULATE ( DISTINCT ( TableA[Value] ) )
    )
VAR _Dates =
    DISTINCT ( SELECTCOLUMNS ( _BaseTable; "Date"; [Value] ) )
VAR _ResTable =
    ADDCOLUMNS (
        _Dates;
        "Total Value"; SUMX ( _BaseTable; IF ( [Value] = [Date]; [TempVal] ) )
    )
RETURN
    _ResTable
Greg_Deckler's avatar
Greg_Deckler
Icon for Community Champion rankCommunity Champion
7 years ago

You can expand out your rows in Power Query using something like:

 

    #"Added Custom" = Table.AddColumn(#"Changed Type", "Custom", each List.Dates( [Initial Date], Number.From( [Final Date]- [Initial Date]) +1, #duration(1,0,0,0))),
    #"Expanded Custom" = Table.ExpandListColumn(#"Added Custom", "Custom")

 

 

There is also GENERATESERIES in DAX. But, depending on what you want to do, check out these two Quick Measures as I think you want something like them.

https://community.powerbi.com/t5/Quick-Measures-Gallery/Open-Tickets/m-p/409364
https://community.powerbi.com/t5/Quick-Measures-Gallery/Periodic-Billing/m-p/409365

AlB's avatar
AlB
Icon for Community Champion rankCommunity Champion
7 years ago

Hi esilva32

 

It certainly looks like it would be easier to do this in the query editor. If you do need to do it in DAX, try this. Create a new calculated table:

 

TableB = 
VAR _BaseTable =
    ADDCOLUMNS (
        GENERATE (
            DISTINCT ( TableA[Id] );
            GENERATESERIES (
                CALCULATE ( DISTINCT ( TableA[StartDate] ) );
                CALCULATE ( DISTINCT ( TableA[EndDate] ) )
            )
        );
        "TempVal"; CALCULATE ( DISTINCT ( TableA[Value] ) )
    )
VAR _Dates =
    DISTINCT ( SELECTCOLUMNS ( _BaseTable; "Date"; [Value] ) )
VAR _ResTable =
    ADDCOLUMNS (
        _Dates;
        "Total Value"; SUMX ( _BaseTable; IF ( [Value] = [Date]; [TempVal] ) )
    )
RETURN
    _ResTable