Forum Discussion

bombom's avatar
bombom
Helper I
3 years ago
Solved

Power BI count null rows

Hi!

 

I have two columns. Both have a general key INT value called TicketId, but one table has less TicketIds than another table. Each table has different amount of columns.

 

For example, the current counting of rows looks like this:

 

DatesTab1Tab2
08.11.20221058950
09.11.202210581056
22.11.20222342302

 

I am looking for a DAX measure forluma that will calculate TicketIds that exist in Tab1, but doesn't exist in Tab2. It should be not a formula like 1058 - 950 = 108. Because after there will be drillthrough to show all the TicketIds that were calculated (exist in Tab1 and doesn't exist in Tab2).


DatesTab1Tab2Tabcross
08.11.20221058950108
09.11.2022105810562
22.11.202223423022040
Need Help
  • Anonymous's avatar
    Anonymous
    3 years ago

    Hi bombom ,

    You can create a measure as below to get it:

    Tabcross =
VAR _tab =
    EXCEPT ( VALUES ( Tab1[TicketId] ), VALUES ( Tab2[TicketId] ) )
RETURN
    COUNTROWS ( _tab )

    If the above one can't help you get the desired result, please provide some sample data in your table 'Tab1' and 'Tab2' (exclude sensitive data) with Text format and your expected result with backend logic and special examples. It is better if you can share a simplified pbix file. You can refer the following link to upload the file to the community. Thank you.

    How to upload PBI in Community

    Best Regards

     

4 Replies

  • Nishudhan's avatar
    Nishudhan
    Frequent Visitor
    3 years ago

    Hi,

    you can use set operator - Except

    =except(table1,table2)

     

     

    • bombom's avatar
      bombom
      Helper I
      3 years ago

      Hello Nishudhan ,

      Thank you. I tried it, but there is an error: "All table arguments to the "EXCEPT" function must have the same number of columns.". It's true. Each of my tables have different amount of columns. So it looks like this formula wouldn't work...

  • Nishudhan's avatar
    Nishudhan
    Frequent Visitor
    3 years ago

    Hi,

    Can you try left anti join -(which returns all the records from left which is not there in right)which is in the power query - Home-Merge as new 

  • Anonymous's avatar
    Anonymous
    Not applicable
    3 years ago

    Hi bombom ,

    You can create a measure as below to get it:

    Tabcross =
VAR _tab =
    EXCEPT ( VALUES ( Tab1[TicketId] ), VALUES ( Tab2[TicketId] ) )
RETURN
    COUNTROWS ( _tab )

    If the above one can't help you get the desired result, please provide some sample data in your table 'Tab1' and 'Tab2' (exclude sensitive data) with Text format and your expected result with backend logic and special examples. It is better if you can share a simplified pbix file. You can refer the following link to upload the file to the community. Thank you.

    How to upload PBI in Community

    Best Regards