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hungbm12's avatar
hungbm12
Regular Visitor
3 years ago
Solved

Unexpected output - sumx

Hi everyone,

I don't understand the result of the Total row (I expect it was 4)

Here the data:

 

Anyone help me?

 

 

 

4 Replies

  • ValtteriN's avatar
    ValtteriN
    Icon for Community Champion rankCommunity Champion
    3 years ago

    Hi,

    I recommend reading this article by SQLBI about the total row: https://www.sqlbi.com/articles/why-power-bi-totals-might-seem-inaccurate/

    The behaviour of totals is a bit wonky in Power BI.

    For a solution try something like this:

    Dax:

    Measure 29 =
    var _mdate = CALCULATE(MAX('Table (18)'[date]),ALL('Table (18)'[date])) return

    CALCULATE(SUM('Table (18)'[value]),'Table (18)'[date]=_mdate,ALL('Table (18)'[date]))

     

    I hope this post helps to solve your issue and if it does consider accepting it as a solution and giving the post a thumbs up!

    My LinkedIn: https://www.linkedin.com/in/n%C3%A4ttiahov-00001/
    • hungbm12's avatar
      hungbm12
      Regular Visitor
      3 years ago

      I'm sorry but if I changed the 4th row to December 28th, Total row = 2 (not as I expect). I expect it get the newest value of each Category and return 4

  • FreemanZ's avatar
    FreemanZ
    Icon for Super User rankSuper User
    3 years ago

    hi hungbm12 

    Trying to understand how your code works. It shall be executed like this:

    measure 3 = 
SUMX(
    DISTINCT(Sheet1[category]), //1.scans category A then B
    CALCULATE(  //2.convert row context A(B) to filter context A(B)
        SUM( Sheet1[value]), //7. it get 2+2 when scanning A in step 1 and another 2+2 in scanning B, so comes 8
        FILTER( // 6. filter context A(B) is replaced by the outcome of FILTER, which is two 24 Dec rows.
            Sheet1,     //3.scan the original Sheet1 
            VAR _maxdate = MAX(Sheet1[Date])  // 4. _maxdate equals 24 Dec
            RETURN [date]=_maxdate   //5. filter in two rows on 24 Dec.
        )
    )
)

     

    p.s.

    [date]=MAX(Sheet1[Date])

    is a misleading syntax sugar and thus extended to:

    VAR _maxdate = MAX(Sheet1[Date]) 
    RETURN [date]=_maxdate