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vanessa's avatar
vanessa
Post Patron
9 years ago

Dynamic Last 7 day

  I am trying to calculate the sales for the last 7 days, but the last 7 days will be dynamic, based on the date selected in a slicer. eg. if the date selected in the slicer is 2017/07/18, then the...
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vanessa's avatar
vanessa
Post Patron
9 years ago

Anonymous I am trying to create a dynamic measure not column.

Anonymous's avatar
Anonymous
Not applicable
9 years ago

Hi vanessa,

 

You can try to use below formula to calculate the last 7 day sales:

Last 7 Day Sales = 
var seleted=LASTDATE(ALLSELECTED('Fact table'[Date]))
return
CALCULATE(SUM('Fact table'[Sales]),FILTER(ALL('Fact table'),'Fact table'[Date]>=seleted-7&&'Fact table'[Date]<=seleted))

 

 

Regards,

Xiaoxin Sheng

  • Rameshwar's avatar
    Rameshwar
    Frequent Visitor
    9 years ago

    Hi Anonymous

     

    Your formula works correctly in PowerBI Desktop when I have In Memory data. 

     

    However, its not working when I've PowerBI Desktop conected to SSAS Tabular instance (1103 compatibility - SQL2014) with Direct Query connection. It gives me syntax error for VAR function.

     

    Is VAR function not supported in SSAS, specifically to 1103 compatibility level?

     

    Thanks for your help!

     

    Thanks,

    Rameshwar 

     

    • Anonymous's avatar
      Anonymous
      Not applicable
      9 years ago

      Hi,

       

      If you are working with a date table, you could also create a calculated column within the date table that's is called 'IsLast7Days'. The column value equals true for every day that's within last 7 days. Based on that, you can create a calculation including a filter (Where IsLast7Days equals true).

      • Rameshwar's avatar
        Rameshwar
        Frequent Visitor
        9 years ago

        Anonymous

         

        The Calculated column will not work here. This Measure needs to be dynamic. The user might select any date from Slicer and depending upon that we should go back previous 7 days. 

      • Rameshwar's avatar
        Rameshwar
        Frequent Visitor
        9 years ago

        Thanks TomMartens. I was hoping the same. 

         

        Thanks,

        Rameshwar

    • Anonymous's avatar
      Anonymous
      Not applicable
      8 years ago

      Hi Rameshwar,

       

      Were you able to resolve this issue? I'm trying to write a DAX formula involving VAR in Power BI desktop connected to a SSAS Tabular data model and also getting a syntax error when there's actually no error that I can see in my syntax.

       

      Thanks for your input

      Esteban