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KBrez's avatar
KBrez
Frequent Visitor
3 years ago
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Question: 'Days Out' Measure not interacting with Date Table as expected

Hi All,

 

I am building a model that compares data year-over-year against an event date that changes each year. I pulled a solution off a forum, and created a calculated column in my date table that compares each row to the Event Date:

I added a 'DateFilter' to constrain the data in visuals, simplify YoY comparative metrics, etc. Initially, I tried to do this with a Measure based on Max purchase date and the event date:

 

CurrentDaysOut = Max('factDonorsSurveyResponses_28896 (6)'[PurchaseDate]) - Date(2023,05,07)
 
But the filter column using the measure doesn't behave as expected: 

 

The solution I came up with was to recreate the measure as a variable in the calculated column: 

My question is: why doesn't using the Measure in the calculated column expression work? As written above, the measure is calculated as a date. I was able to convert it to a whole number by putting it inside Value() and DateValue() functions, or rewriting it as a DATEDIFF function; this generated a different, but still incorrect, results. The only thing that worked was hardcoding the Measure's value e.g.:  CURRENTDAYSOUT= -32. So in theory there must be a way to get the Measure to work in this context. The variable in the calculated column is basically a copy of the measure, and it works. I am still pretty green with Dax, so any perspective would be appreciated.

3 Replies

  • Greg_Deckler's avatar
    Greg_Deckler
    Community Champion

    KBrez Columns are not dynamic. They are calculated at the time of data load/refresh.

    • KBrez's avatar
      KBrez
      Frequent Visitor

      Thanks Greg_Deckler . So as a general rule should I avoid referencing Measures in Calculated Columns?