DAX previous month value

[VJ89]

Hi All,

I have a scenario where i am supposed to get the previous month measure of the top scorer in the current month.

For example. my data look like below

name	Date	Score	measure value
Alice	01-02-2017	78	8
Sam	01-02-2017	67	9
Sam	01-03-2017	89	6
Alice	01-03-2017	56	7

Current month highest scorer is SAM and its measure value is 6.

So right now i am looking for SAM's previous month measure value which is 9.

Can anyone please help me with this scenario?

[LaurentCouartou]

Say you are looking at the data for march and have a filter on name = "Alice", should the measure still return Sam's score for february?

[VJ89]

If there is a filter ="Alice" then it should return the measure value of "Alice" for the month of Feb.

If no filter is present then it should give the Highest scorer's previous month value, in this case it will be "Sam's" Feb value.

[LaurentCouartou · Accepted solution]

My suggestion:

Previous month score for top scorer = 
	VAR TopScorers = TOPN( 1, VALUES( Scores[name] ), CALCULATE(AVERAGE(Scores[Score])) )
        VAR PrevMonth = CALCULATETABLE( DATEADD(Scores[Date],-1, MONTH), LASTDATE( Scores[Date]) )
		  RETURN
CALCULATE( AVERAGE(Scores[Score])
		, TopScorers
		, PrevMonth
	)

Note the TOPN function wil return several players if you have ties in your current selection. Hence the average calculation.

Also, in case several months/dates are selected, I take the last one and calculate the previous month for this date.

[VJ89]

Hey Thanks a lots, it worked like charm!! 🙂