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CRanjan12
New Member

Calculated Column to Retrieve previous date where value was different (Filtered by criteria)

‎09-01-2024 05:34 AM

Hi all,

I am attempting to find previous last_run date where the position value was different in a records table based on the ID and product being the same. So following the table below, when the position value column was last different and have that shown in a table as a calculated column.

 

idpositionproductlast_runDesired Column - Previous PositionDesired Column - Previous date
0012000000bkPfwAAEBottomProduct A01-Sep-24Middle01-Jun-24
0012000000bkPfwAAEMiddleProduct A15-Aug-24Top01-May-24
0012000000bkPfwAAEMiddleProduct A01-Aug-24Top01-May-24
0012000000bkPfwAAEMiddleProduct A15-Jul-24Top01-May-24
0012000000bkPfwAAEMiddleProduct A09-Jul-24Top01-May-24
0012000000bkPfwAAEMiddleProduct A15-Jun-24Top01-May-24
0012000000bkPfwAAEMiddleProduct A01-Jun-24Top01-May-24
0012000000bkPfwAAETopProduct A01-May-24Middle01-Feb-24
0012000000bkPfwAAETopProduct A01-Apr-24Middle01-Feb-24
0012000000bkPfwAAETopProduct A01-Mar-24Middle01-Feb-24
0012000000bkPfwAAEMiddleProduct A01-Feb-24Middle01-Nov-23
0012000000bkPfwAAEMiddleProduct A01-Jan-24Middle01-Nov-23
0012000000bkPfwAAEMiddleProduct A01-Dec-23Middle01-Nov-23
0012000000bkPfwAAEMiddleProduct A01-Nov-23Middle01-Nov-23
0012000000bkPfwAAEBottomProduct B01-Sep-24Middle01-Jun-24
0012000000bkPfwAAEMiddleProduct B15-Aug-24Top01-May-24
0012000000bkPfwAAEMiddleProduct B01-Aug-24Top01-May-24
0012000000bkPfwAAEMiddleProduct B15-Jul-24Top01-May-24
0012000000bkPfwAAEMiddleProduct B09-Jul-24Top01-May-24
0012000000bkPfwAAEMiddleProduct B15-Jun-24Top01-May-24
0012000000bkPfwAAEMiddleProduct B01-Jun-24Top01-May-24
0012000000bkPfwAAETopProduct B01-May-24Middle01-Feb-24
0012000000bkPfwAAETopProduct B01-Apr-24Middle01-Feb-24
0012000000bkPfwAAETopProduct B01-Mar-24Middle01-Feb-24
0012000000bkPfwAAEMiddleProduct B01-Feb-24Middle01-Nov-23
0012000000bkPfwAAEMiddleProduct B01-Jan-24Middle01-Nov-23
0012000000bkPfwAAEMiddleProduct B01-Dec-23Middle01-Nov-23
0012000000bkPfwAAEMiddleProduct B01-Nov-23Middle01-Nov-23



I have attempted using MAX function in a calculated column but I dont think I am getting the variables right. 

Would be great to get your assistance 🙂

Thank you

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Greg_Deckler
Community Champion
Community Champion

‎09-01-2024 07:27 AM

@CRanjan12 See my article on Mean Time Between Failure (MTBF) which uses EARLIER. In this case, you would just need to stop at PreviousDate variable (see below). And of course include your ID and Product name in your filter.

 

http://community.powerbi.com/t5/Community-Blog/Mean-Time-Between-Failure-MTBF-and-Power-BI/ba-p/3395....
The basic pattern is:
Column = 
  VAR __Current = [Value]
  VAR __PreviousDate = MAXX(FILTER('Table','Table'[Date] < EARLIER('Table'[Date])),[Date])

  VAR __Previous = MAXX(FILTER('Table',[Date]=__PreviousDate),[Value])
RETURN
 ( __Current - __Previous ) * 1.



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