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tahir9's avatar
tahir9
Frequent Visitor
8 years ago
Solved

Getting prior month data to display for current month?

Hello i am trying to display the prior month totals as a measure in a table where i am showing the totals by month and year... but my measure formula isn't working not sure why? Here is the formula:

 

Prior days = CALCULATE(SUM('Calendar'[Work Day]),PARALLELPERIOD('Calendar'[Date].[Date],-1,MONTH))

 

As you can see in the table below i want the 24 for january to show up in february and so on... but the formula above only returns that months totals... 

 



Need Help
  • Phil_Seamark's avatar
    Phil_Seamark
    8 years ago

    HI tahir9

     

    Please try this calculated measure

     

    Prior days = 
    CALCULATE(
        SUM('Calendar'[Work Day]),
        ALL('Calendar'),
        PREVIOUSMONTH('Calendar'[Date])
        )

4 Replies

  • Phil_Seamark's avatar
    Phil_Seamark
    Icon for Microsoft Employee rankMicrosoft Employee
    8 years ago

    HI tahir9

     

    Please try this calculated measure

     

    Prior days = 
    CALCULATE(
        SUM('Calendar'[Work Day]),
        ALL('Calendar'),
        PREVIOUSMONTH('Calendar'[Date])
        )
    • tahir9's avatar
      tahir9
      Frequent Visitor
      8 years ago

      that worked Phil! Thank you! Just curious if you could explain why that worked but my method did not... ?

      • Phil_Seamark's avatar
        Phil_Seamark
        Icon for Microsoft Employee rankMicrosoft Employee
        8 years ago

        HI tahir9

         

        The magic function in my calculation is the ALL function.  This allows me to remove the implicit filtering being applied to the underlying dataset and have access to different rows.  If you do some internet searching for DAX Filter Context, there will be a bunch of articles or blogs that describe it.  I have a section in my book (aka.ms/practicalDAX) that you may also find useful.