Forum Discussion

msmays5's avatar
msmays5
Helper II
6 years ago
Solved

Count Rows Based on Disconnected Tables

I have a 'Mapping' table with the following columns: Mapping[Country] and Mapping[Region].   I have a second table 'Articles' that has two columns: Article[ID] and Article[Geography_Tags]. The Arti...
  • msmays5's avatar
    msmays5
    6 years ago

    I was able to solve this. For anyone who comes across this:

     

    Count of Articles =
MAXX (
    Mapping,
    VAR _countrySemiColon =
        CONCATENATE ( ";", Mapping[Country ] )
    VAR _regionSemiColon =
        CONCATENATE ( ";", Mapping[Region Tag] )
    VAR _FilteredTable =
        FILTER (
            Articles,
            (
                SEARCH ( _countrySemiColon, Article[Geography_Tags],, 0 ) <> 0
                    || SEARCH ( _regionSemiColon, Article[Geography_Tags],, 0 ) <> 0
            )
        )
    RETURN
        COUNTROWS ( _FilteredTable )
)

     

     

lbendlin's avatar
lbendlin
Super User
6 years ago

Change the semicolons to pipe "|" and attack your enumerations with the PATH functions.

 

Does it really matter if you match to country or region?  If the combined list of countries and regions is unique (ie no two countries have the same region etc)  then you could combine you Mapping columns 

 

And lastly, use SWITCH() to exit the search after the first hit.

  • msmays5's avatar
    msmays5
    Helper II
    6 years ago

    Thanks for the response, lbendlin. There are multiple countries that have the same Region (the list of two items I included in my example was just a short list). I have a list of 95 countries, each of which belongs to a single region.

     

    Because a value in Article[Geography_Tags] could contain the country, the region, or both, my thought was to filter the Article table to include only rows where Article[Geography_Tags] contains either the selected Mapping[Country] or the country's Mapping[Region]. But I think that's where I'm getting hung up

    • lbendlin's avatar
      lbendlin
      Super User
      6 years ago

      here's another crazy idea approach

       

      add a semicolon to the front and the back of your enumeration.

       

      for example instead of 

       

      United States;Asia

       

      this would be

       

      ;United States;Asia;

       

      That helps to prevent bleedover.

       

      Next, use DAX FIND() or SEARCH() functions with that string against your Mapping columns, First against the Country column and then (if nothing found) against the region column

       

      • msmays5's avatar
        msmays5
        Helper II
        6 years ago

        Thanks, lbendlin. In PowerQuery, I prepended a semicolon. I then created the below measure, which works. However, I have one final question.

         

        In addition to showing the below value where the visual provides a filter context to a single market, I'd also like to have a card that will show the maximum value for any of the selected markets. Put another way, if a user selects China and United States, the card would compute the below for both United States and China, and then take the maximum of that value. 

         

        How can I modify the below to work with an iterator (which is what I think I need?)

         

         

        VAR _country =
    SELECTEDVALUE ( Mapping[Country], "Multi" )
VAR _countrySemiColon = 
    IF ( _country <> "Multi", CONCATENATE(";", _country), "Multi" )
VAR _region =
    IF (
        _country <> "Multi",
        LOOKUPVALUE (Mapping[Region], Mapping[Country], _country),
        "Unknown"
    )
VAR _regionSemiColon = IF ( _country <> "Multi", CONCATENATE(";", _region), "Unknown" )
RETURN
    IF (
        _country <> "Multi",
        COUNTROWS (
            FILTER (
                Article,
                SEARCH ( _countrySemiColon, Article[Geography_Tags],, 0 ) <> 0
                    || SEARCH ( _regionSemiColon, Article[Geography_Tags],, 0 ) <> 0
            )
        ),
        "Multiple Countries are selected"
    )