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sun-sboyanapall's avatar
sun-sboyanapall
Advocate I
4 years ago
Solved

convert SQL(case) to Dax

Hello guys, 

 

I have this query in sql which I am trying to make a measure in powerbi but having issues,

 

SQL query: 

SELECT COUNT (DISTINCT(ID)) - 

COUNT( DISTINCT (case when MONTH(ISNULL(ConvertedDate,Date_of_Last_Status_Change__c)) <> MONTH(TransactionDate) and Year(ISNULL(ConvertedDate,Date_of_Last_Status_Change__c)) <> YEAR(TransactionDate) then DocumentNumber end))

 

TABLE STRUCTURE

IDTransactionDateConvertedDateDate_of_Last_Status_Change__cDocumentNumber
12312/1/202112/1/202112/15/2021001

145

11/1/202112/1/202112/15/2021002
23410/1/20219/1/202110/21/2021003
265NULL10/1/202110/15/2021NULL
NULL2/1/2021NULLNULL005

 

correct answer:

4 - 2 = 2

 

Thanks for your help!

 

 

Need Help
  • smpa01's avatar
    smpa01
    4 years ago

    sun-sboyanapall  can you try this measure

     

    Measure =
CALCULATE (
    DISTINCTCOUNT ( tbl[ID] ),
    VAR _base =
        FILTER (
            tbl,
            tbl[TransactionDate] <> BLANK ()
                && tbl[ConvertedDate] <> BLANK ()
                && tbl[Date_of_Last_Status_Change__c] <> BLANK ()
        )
    VAR _left =
        FILTER ( tbl, tbl[ID] <> BLANK () )
    VAR _join =
        EXCEPT (
            _left,
            FILTER (
                _base,
                MONTH ( COALESCE ( tbl[ConvertedDate], tbl[Date_of_Last_Status_Change__c] ) )
                    <> MONTH ( tbl[TransactionDate] )
                    && YEAR ( COALESCE ( tbl[ConvertedDate], tbl[Date_of_Last_Status_Change__c] ) )
                        <> YEAR ( tbl[TransactionDate] )
            )
        )
    RETURN
        _join
)

     

8 Replies

  • smpa01's avatar
    smpa01
    Community Champion
    4 years ago

    sun-sboyanapall  I don't think the above SQL query returns 2 for the data provided, it returns 4, cause the following part returns 0

    COUNT( DISTINCT (case when MONTH(ISNULL(ConvertedDate,Date_of_Last_Status_Change_c)) <> MONTH(TransactionDate) and Year(ISNULL(ConvertedDate,Date_of_Last_Status_Change_c)) <> YEAR(TransactionDate) then DocumentNumber end))

     

    breakdown

    MONTH(ISNULL(ConvertedDate,Date_of_Last_Status_Change_c)) <> MONTH(TransactionDate) 
has two matches row 2 and row 3 as {12,11}, {9,10}

Year(ISNULL(ConvertedDate,Date_of_Last_Status_Change_c)) <> YEAR(TransactionDate)
has no match as all of them are {2021,2021}

     

    • sun-sboyanapall's avatar
      sun-sboyanapall
      Advocate I
      4 years ago

      That's correct the correct answer would be 4, I thought I have changed year.

      Looking forward to how you would do this with dax.


      • smpa01's avatar
        smpa01
        Community Champion
        4 years ago

        sun-sboyanapall  can you try this measure

         

        Measure =
CALCULATE (
    DISTINCTCOUNT ( tbl[ID] ),
    VAR _base =
        FILTER (
            tbl,
            tbl[TransactionDate] <> BLANK ()
                && tbl[ConvertedDate] <> BLANK ()
                && tbl[Date_of_Last_Status_Change__c] <> BLANK ()
        )
    VAR _left =
        FILTER ( tbl, tbl[ID] <> BLANK () )
    VAR _join =
        EXCEPT (
            _left,
            FILTER (
                _base,
                MONTH ( COALESCE ( tbl[ConvertedDate], tbl[Date_of_Last_Status_Change__c] ) )
                    <> MONTH ( tbl[TransactionDate] )
                    && YEAR ( COALESCE ( tbl[ConvertedDate], tbl[Date_of_Last_Status_Change__c] ) )
                        <> YEAR ( tbl[TransactionDate] )
            )
        )
    RETURN
        _join
)

         

  • sun-sboyanapall's avatar
    sun-sboyanapall
    Advocate I
    4 years ago

    Thank you, another way I did was created a calculated column, is consumed that is taking care of my case statement.

     

    IsConsumed = 
var yearTranDate = YEAR(Tbl[TransactionDate])
var monthTranDate = MONTH(Tbl[TransactionDate])
var yearConvDate = YEAR(Tbl[ConvertedDate]))
var monthConvDate = MONTH(Tbl[ConvertedDate]))
var yeardateLastSC = YEAR(Tbl[Date_of_Last_Status_Change__c]))
var monthdateLastSC = MONTH(Tbl[Date_of_Last_Status_Change__c]))

RETURN  IF(ISBLANK(vLeadConsumedWithSales[ID]), FALSE(), IF(ISBLANK(yearConvDate), yearDateLastSC <> yearTranDate && monthDateLastSC <> monthTranDate, yearConvDate <> yearTranDate && monthConvDate <> monthTranDate))
    • smpa01's avatar
      smpa01
      Community Champion
      4 years ago

      sun-sboyanapall  well done.

       

      One rule of thumb to always remember with DAX; if you can create a measure, don't create a column.