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Anonymous's avatar
Anonymous
Not applicable
7 years ago

DAX count unique values after union

Hi everybody,

I am trying to create measure counting unique values of particular column, which is the result of UNION of two columns with similar data from two diffrent tables. It looks much easier with example :)  

It is not my buisness caase, but similar to it.  My tables have different structure, so I can perform UNION only over columns. And the issues is that DISTINCOUNT works only with column, and in my case I can specify particular column name after UNION statement.

Please help me with this case.

Thank you in advance!

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4 Replies

  • felipegm10's avatar
    felipegm10
    New Member
    4 years ago

    Hey, I had the same problem before but I got the solution. Use this measure, it's simple and works fine:

    Measure=  COUNTROWS(DISTINCT(UNION(VALUES(Table1[sales_manager]),VALUES(Table2[manager))))

  • v-xicai's avatar
    v-xicai
    Community Support
    7 years ago

    Hi Anonymous ,

     

    You can create new measure.

     

    Measure = var t=DISTINCT(UNION(SELECTCOLUMNS(Table1,"column1",Table1[sales_manager]),SELECTCOLUMNS(Table2,"column1",Table2[manager])))

    return COUNTX(t,[column1])

     

     

     

     

     

     

    Best Regards,

    Amy

     

    If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

    • Anonymous's avatar
      Anonymous
      Not applicable
      7 years ago

      Hi v-xicai ,

      Thank you for the reply! 

      Unfortunately DISTINCT doesn't want to accept table expression after UNION statement...

      • AkhilAshok's avatar
        AkhilAshok
        Solution Sage
        7 years ago

        Maybe something like this:

        Manager # =
VAR ManagerTable1 =
    DISTINCT ( Table1[sales_manager] )
VAR ManagerTable2 =
    DISTINCT ( Table2[manager] )
VAR CombinedManagers =
    UNION ( ManagerTable1, ManagerTable2 )
VAR UniqueManagers =
    DISTINCT ( CombinedManagers )
RETURN
    COUNTROWS ( UniqueManagers )