Forum Discussion

Anonymous's avatar
Anonymous
Not applicable
8 years ago
Solved

Select a column by parameter

Hi everyone,

 

I am new to Power BI and exploring the dashboard. I have created a measure to calculate the cumulative value.

 

Cumulative Freezer=
CALCULATE (
    SUM ( 'Business Plan'[Freezer] ),
    FILTER (
        ALL ( 'Business Plan'[Period] ),
        'Business Plan'[Period] <= MAX ( 'Business Plan'[Period] )
    )
)

 

However, I want to make the chart more dynamic, like through a parameter selection I will get different cumulative value from different column.

 

But it seems that DAX doesn't have a function like "colnames" which allow me to pass dynamtic column to SUM function.

 

Can anyone help me with it? Thank you very much.

  • Eric_Zhang's avatar
    Eric_Zhang
    8 years ago
    Anonymous wrote:

    Thanks for the disconnected slicer information. But I think the main difference is that I hope to filter by columns but the disconnected slicer filters data by rows. Still thanks for your information.

    Anonymous

    In my opinion, a better practice for your case is to unpivot the columns and slice the unpivoted column.

     

    If the way in your original post is still preferable, you could try to create measure as

     

    Cumulative Freezer =
SWITCH (
    TRUE (),
    HASONEVALUE ( ParameterTable[Parameter] )
        && ISFILTERED ( ParameterTable[Parameter] )
        && LASTNONBLANK ( ParameterTable[Parameter], "" ) = "Freezer", CALCULATE (
        SUM ( 'Business Plan'[Freezer] ),
        FILTER (
            ALL ( 'Business Plan'[Period] ),
            'Business Plan'[Period] <= MAX ( 'Business Plan'[Period] )
        )
    ),
    HASONEVALUE ( ParameterTable[Parameter] )
        && ISFILTERED ( ParameterTable[Parameter] )
        && LASTNONBLANK ( ParameterTable[Parameter], "" ) = "Washing machine", CALCULATE (
        SUM ( 'Business Plan'[Washing machine] ),
        FILTER (
            ALL ( 'Business Plan'[Period] ),
            'Business Plan'[Period] <= MAX ( 'Business Plan'[Period] )
        )
    ),
    0
)

6 Replies

  • GilbertQ's avatar
    GilbertQ
    Super User
    8 years ago

    Hi Anonymous

     

    You cannot pass a column name into a DAX measure as far as I am aware. 

     

    You can pass values within a column to a DAX measure though.

     

    Do you have an example of what you are trying to achieve?

    • Anonymous's avatar
      Anonymous
      Not applicable
      8 years ago

       

      Here is a sample of my data. So far I created a measure for column "Freezer".

      Cumulative Freezer=
      CALCULATE (
          SUM ( 'Business Plan'[Freezer] ),
          FILTER (
              ALL ( 'Business Plan'[Period] ),
              'Business Plan'[Period] <= MAX ( 'Business Plan'[Period] )
          )
      )

      I hope that I can have different measure for different columns using parameter or other method so that I do not need to create new measure for every single column. A sample chart is below: