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MarkCBB's avatar
MarkCBB
Icon for Helper V rankHelper V
8 years ago
Solved

2nd last date per item

Hi there,   I need to create a measure that filters another measure to the 2nd last date. for example, For BP Charles I would like the measure to return the 41.2% score as it is the 2nd last score...
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  • Zubair_Muhammad's avatar
    Zubair_Muhammad
    8 years ago

    Hi Mark MarkCBB

     

    Please try this MEASURE

     

    Measure =
VAR SecondLastDate =
    MINX (
        TOPN (
            2,
            CALCULATETABLE (
                VALUES ( TableName[DATE] ),
                ALLEXCEPT ( TableName, TableName[STORE] )
            ),
            TableName[DATE], DESC
        ),
        TableName[DATE]
    )
RETURN
    CALCULATE (
        [TotalAverageScore],
        FILTER (
            ALLEXCEPT ( TableName, TableName[STORE] ),
            TableName[DATE] = SecondLastDate
        )
    )
MarkCBB's avatar
MarkCBB
Icon for Helper V rankHelper V
8 years ago

Hello Zubair_Muhammad,

 

I was able to do this after messing around a bit. This is the approach I took, I would love to hear your take on it.

 

First I created a new measure to get a Distinct Count:

Dist Count = COUNTROWS(SUMMARIZE(DATA,DATA[STORE],DATA[DATE]))

Then I edited your measure by adding a logical condition: (The IF)

 

2nd Last Visit = 
Var Occurrence = 2
VAR SecondLastDate =
    MINX (
        TOPN (
            Occurrence,
            CALCULATETABLE (
                VALUES ( 'DATA'[DATE] ),
                ALLEXCEPT ( DATA, DATA[STORE] )
            ),
             'DATA'[DATE], DESC
        ),
         'DATA'[DATE]
    )

RETURN
IF( [Dist Count] >=Occurrence ,
    CALCULATE (
        [TOTAL AVERAGE SCORE],
        FILTER (
            ALLEXCEPT ( DATA, DATA[STORE] ),
             DATA[DATE] = SecondLastDate
        )
    ),BLANK())
  • Zubair_Muhammad's avatar
    Zubair_Muhammad
    Icon for Community Champion rankCommunity Champion
    8 years ago

    MarkCBB

     

    Great work Mark.

    I wrote a similar revised MEASURE

     

    Measure =
VAR SecondLastDate =
    MINX (
        TOPN (
            2,
            CALCULATETABLE (
                VALUES ( TableName[DATE] ),
                ALLEXCEPT ( TableName, TableName[STORE] )
            ),
            TableName[DATE], DESC
        ),
        TableName[DATE]
    )
VAR countdates =
    COUNTROWS (
        CALCULATETABLE (
            VALUES ( TableName[DATE] ),
            ALLEXCEPT ( TableName, TableName[STORE] )
        )
    )
RETURN
    IF (
        [countdates] > 1,
        CALCULATE (
            [TotalAverageScore],
            FILTER (
                ALLEXCEPT ( TableName, TableName[STORE] ),
                TableName[DATE] = SecondLastDate
            )
        )
    )

     

     

    • Zubair_Muhammad's avatar
      Zubair_Muhammad
      Icon for Community Champion rankCommunity Champion
      8 years ago

      MarkCBB

       

      Difference is that you had used a MEASURE while I used a VARIABLE

       

      VAR countdates =
    COUNTROWS (
        CALCULATETABLE (
            VALUES ( TableName[DATE] ),
            ALLEXCEPT ( TableName, TableName[STORE] )
        )
    )

       

       

      • MarkCBB's avatar
        MarkCBB
        Icon for Helper V rankHelper V
        8 years ago

        Zubair_Muhammad, Thank you so much for your help, I have learnt something new. 

        Quick question, would there be any performance difference between the 2 approaches?