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Anonymous's avatar
Anonymous
Not applicable
4 years ago
Solved

Getting previous date by category, not min date

Hello all, this Measure is working as long as there are only 2 dates Min and Max, but I need to get the date before Max regardless if it's Min or not. 1 table, 1 date column and 1 category column. I ...
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  • Chew_WenJie's avatar
    Chew_WenJie
    4 years ago

    Thanks for clearer explanation, below you can try the new measure for the different of the days compare to previous ID.

    Measure =
    var forid = SELECTEDVALUE('Table'[ID])
    var selectdate = SELECTEDVALUE('Table'[Date])
    var previousdate = CALCULATE(MAX('Table'[Date]),FILTER(ALL('Table'),'Table'[ID]=forid-1))
    var result = DATEDIFF(previousdate,selectdate,DAY)
    return
    IF(previousdate=BLANK(),BLANK(),result)

    Another measure is the status: 
    Status =
    var forid = SELECTEDVALUE('Table'[ID])
    var forcategory = SELECTEDVALUE('Table'[Category])
    var result = CALCULATE(MAX('Table'[Category]),FILTER(ALL('Table'),'Table'[ID]=forid-1))
    return
    IF(result=BLANK(), BLANK(), IF(forcategory<>result, "Change", "No Change"))
     

     


     

    Hope this can help you.

     



  • v-henryk-mstf's avatar
    v-henryk-mstf
    4 years ago

    Hi Anonymous 

     

    If the problem has been solved you can mark the reply for the standard answer to help the other members find it more quickly. If not, please point it out.


    Looking forward to your feedback.


    Best Regards,
    Henry

Chew_WenJie's avatar
Chew_WenJie
Icon for Resolver III rankResolver III
4 years ago

Hello, earlier function are normally used in the calculated column instead of measure. You may refer to the power bi that i had attached below, the measure i done is datediff based on the ID of the name. 

 

Dummy data:


Sample measure result: 

Measure:

 

Measure =
var aname = SELECTEDVALUE('Table'[Name])
var findminID = CALCULATE(MIN('Table'[ID]),'Table'[Name]=aname)
var findmaxID = CALCULATE(MAX('Table'[ID]),'Table'[Name]=aname)
var find1stdate = CALCULATE(MAX('Table'[Date]),'Table'[ID]=findminID)
var findlastdate = CALCULATE(MAX('Table'[Date]),'Table'[ID]=findmaxID)

var datedifferent = DATEDIFF(find1stdate,findlastdate,DAY)

return
datedifferent

 

.

Hope this can help you 

 

Anonymous's avatar
Anonymous
Not applicable
4 years ago

Hello, thanks for the response. in my data Min(ID) will return the first record in the group, this is not the record I want, I am looking for previous date, as I add new records I am checking for change from the most recent.

 

Thanks

  • Chew_WenJie's avatar
    Chew_WenJie
    Icon for Resolver III rankResolver III
    4 years ago

    Maybe, you can show me what is the result you wanted from this table, i believe that i will have a better understanding on your requirement.

     

    • Anonymous's avatar
      Anonymous
      Not applicable
      4 years ago

      Thanks, I am testing your measure but not getting the right result. this is a better sample of the actual data. as I add new records I need to compare to the previous date, when I add ID 2, compare to ID 1, when I add ID 3, compare to ID 2. Below sample shows ID 5, I need to compare to ID 4. Using Min and Max return ID 1 and ID 5 which is not what I need to check for name change. Thank for your help

       

       

      IDCategoryDateStatusDays
      1aName7/27/22  
      2aName8/10/22No Change14 days
      3aName8/17/22No Change21 Days
      4bName8/25/22Change1 Days
      5bName9/1/22No Change6 Days
      • Chew_WenJie's avatar
        Chew_WenJie
        Icon for Resolver III rankResolver III
        4 years ago

        Thanks for clearer explanation, below you can try the new measure for the different of the days compare to previous ID.

        Measure =
        var forid = SELECTEDVALUE('Table'[ID])
        var selectdate = SELECTEDVALUE('Table'[Date])
        var previousdate = CALCULATE(MAX('Table'[Date]),FILTER(ALL('Table'),'Table'[ID]=forid-1))
        var result = DATEDIFF(previousdate,selectdate,DAY)
        return
        IF(previousdate=BLANK(),BLANK(),result)

        Another measure is the status: 
        Status =
        var forid = SELECTEDVALUE('Table'[ID])
        var forcategory = SELECTEDVALUE('Table'[Category])
        var result = CALCULATE(MAX('Table'[Category]),FILTER(ALL('Table'),'Table'[ID]=forid-1))
        return
        IF(result=BLANK(), BLANK(), IF(forcategory<>result, "Change", "No Change"))
         

         


         

        Hope this can help you.