DAX formula to turn, in each line, the anterior date for the same ID&Service.

[DBrito79]

Hello Everyone!

Can you help me with a formula that i will try to explain:

I have a single table in PBI wich each row is an ID (sow&cycle) and a n.º of service(1, 2, 3...) and date (mating date). One ID (sow&cycle) can have or not more than 1 service. One service (p.e. 1) can end with a repetition (so it gets after another row with the service 2...) or can end in a farrowing ( There is not more services after with this ID (sow&cycle)).  There are more results of the data mating but its not necessary for the question.

I need to calculare de diference between (in days):

service 1 and 2 if i have a repetition (not a farrowing) in service 1
service 2 and 3 if i have a repetition (not a farrowing) in service 2

service 3 and 4 if i have a repetition (not a farrowing) in service 3

So it would be easier for me if i have the dates of the next service in the same row (if that row is a repetition) and make the diference in days after.

I tried a lot of formulas, the one that is more likely and have better results is:

Column

Repeat Date 1try = IF(

    PCH[Mating Result]="Repetition" && PCH[Service]=1,

    CALCULATE

    ([Dia 2] , ALLEXCEPT(PCH, PCH[Sow&Cycle] )),

    IF(

    PCH[Mating Result]="Repetition" && PCH[Service]=2,

    CALCULATE

    ([Dia 3] , ALLEXCEPT(PCH, PCH[Sow&Cycle] )),

    IF(

    PCH[Mating Result]="Repetition" && PCH[Service]=3,

    CALCULATE

    ([Dia 4] , ALLEXCEPT(PCH, PCH[Sow&Cycle] ))

    )))

Whrere the measures "dia 2", "dia 3" and "dia 4" are:

Measures:

Dia 1 = MIN(PCH[MatingDate])

Dia 2 =

CALCULATE(

    MINX(

    TOPN(2, 'PCH', PCH[MatingDate], DESC),

    PCH[MatingDate]), ALLEXCEPT(PCH, PCH[Sow&Cycle])

)

Dia 3 = VAR MinValue = [Dia 2]

RETURN

    CALCULATE(

        MIN(PCH[MatingDate]),

        FILTER(ALLSELECTED(PCH), PCH[MatingDate] > MinValue),

        ALLEXCEPT(PCH, PCH[Sow&Cycle])

    )

Dia 4 = VAR MinValue = [Dia 3]

RETURN

    CALCULATE(

        MIN(PCH[MatingDate]),

        FILTER(ALLSELECTED(PCH), PCH[MatingDate] > MinValue),

        ALLEXCEPT(PCH, PCH[Sow&Cycle])

    )

But i can only get good values until day 3, after that it appear or in blank or the first date (Service=1)

I can't make a rank of dates in each primary ID (sow&cycle). If i can it will be easier. 

Sow&Cycle	Cycle	Service	MatingDate	Mating Result	Repeat Date 1try	IRR1
SOW10-1	1	1	06/03/2022	Repetition	13/03/2022	7
SOW10-1	1	2	13/03/2022	Repetition	14/03/2022	1
SOW10-2	1	3	14/03/2022	Repetition	should be 30/03/2022	16
SOW10-1	1	4	30/03/2022	Farrowed
SOW10-2	2	1	24/06/2022	Repetition	26/07/2022	32
SOW10-2	2	2	26/07/2022	Repetition	05/08/2022	10
SOW10-3	2	3	05/08/2022	Farrowed

Can you help me? i think the error is in the ranking ASC of dates for each Sow&Cycle

Thanks a million! 

Regards

[DBrito79]

Sorry but the table have one error.
Here is the writ one

Thanks

Sow&Cycle	Cycle	Service	MatingDate	Mating Result	Repeat Date 1try	IRR1
SOW10-1	1	1	06/03/2022	Repetition	13/03/2022	7
SOW10-1	1	2	13/03/2022	Repetition	14/03/2022	1
SOW10-1	1	3	14/03/2022	Repetition	should be 30/03/2022	16
SOW10-1	1	4	30/03/2022	Farrowed
SOW10-2	2	1	24/06/2022	Repetition	26/07/2022	32
SOW10-2	2	2	26/07/2022	Repetition	05/08/2022	10
SOW10-2	2	3	05/08/2022	Farrowed

[v-stephen-msft · Accepted solution]

Hi @DBrito79 ,

If you want to fetch the previous row, please try this measure.

Repeat Date = VAR _PREVIOUSDATE=CALCULATE(MAX('Table'[MatingDate]),FILTER(ALLSELECTED('Table'),[Sow&Cycle]=MAX('Table'[Sow&Cycle])&&[Service]=MAX('Table'[Service])+1))
RETURN IF(MAX('Table'[Mating Result])="Farrowed",BLANK(),_PREVIOUSDATE)

Make sure to tick ‘Show items with no data’.

Best Regards,

Stephen Tao

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.           

[DBrito79]

Hello Stephen Tao

Thank you very much 
It works exacly!
Thanks again, you saved me a lot of time in getting this done
Best Regards
Diogo