Need a DAX measure that combines the distinct and non-distinct attributes of a table

[Anonymous]

Hello PBI Community.

I am having difficulty creating a DAX measure that combines s the following distinct and non-distinct attributes within the same Matrix:

1. Counts the distinct Purchase Orders ([PO#]) within my table ('020_BOS') presented as following:
   1. Row Subtotals = Order Status ([Order_Status])
      1. Shipped
      2. Deleted
      3. Swap Doc
   2. Column Subtotals = On Time Fulfillment ([OTF])
      1. Pass
      2. Fail
2. For the non-distinct Purchase Orders ([PO#]) within my table ('020_BOS'), only counts/includes the attributes of the first Shipment ID# ([SID#]) assigned sequentially to the PO#.

  

In my table ('020_BOS') :

1. There are a total of 10,668 Purchase Orders.
2. 10,660 of the PO#'s are distinct (with a single SID#) whereas 8 are non-distinct (with two SID#'s).

I need both my matrix's subtotal and total counts to equal 10,664 – which reflects the attributes of the 10,660 distinct PO's combined with the attributes of the first [SID#] for the 4, non-distinct PO's.

My DESIRED MATRIX is as follows with both subtotals and totals reflecting 10,664 Purchase Orders:

The Original Matrix (using the implicit "Count" option for PO#) is as follows:

The Original Matrix (using implicit "Count (Distinct)" option for PO#) is as follows:

NOTES:

1. The "Desired Matrix" above was created using an inefficient, non-DAX approach where I duplicated tables, identified "unique" PO#'s, then merged results back to my original table.  Unfortunately, my data set is much too large for this approach.
2. If I had a Dollar ($) for every incorrect version of SUMX, HASONEVALUE, & VAR formula I have attempted thus far... I would be a wealthy individual!  🙂

  Examples:

1. OTF_DC1 = SUMX(SUMMARIZE('020_BOS','020_BOS'[OTF],'020_BOS'[Order_Status],"_1",CALCULATE(DISTINCTCOUNT('020_BOS'[PO#]))),[_1])  
2. OTF_DC2 = IF(HASONEVALUE('020_BOS'[OTF]),COUNT('020_BOS'[PO#]),BLANK())
3. 

Thanks in advance for any assistance, advice, or insights you could offer.

[AllisonKennedy · Accepted solution]

@Anonymous 

Basically, you're wanting to only view the first shipment values; there's a few ways you could do this. 

If you're wanting a DAX only approach, try this where you define your variables within the COUNTROWS function:

First SID Count =

COUNTROWS(

    FILTER(

        CtrlShiftL,

        VAR _PO = CtrlShiftL[PO#]

        VAR _FirstSID =

        MINX(

            FILTER(

                ALL(CtrlShiftL),

                CtrlShiftL[PO#] = _PO

            ),

            CtrlShiftL[SID#]

        )

        RETURN

        CtrlShiftL[SID#] = _FirstSID

    )

)

[Anonymous]

Thank you so much Allison... your code gave me precisely what I was seeking!!

As of today, you are officially my hero.  🙂