Value of previous month YYYYMM

[alextarki]

Dear All, 

I have the following task that I kindly ask you to help me with :

column YYYYMM , values across months

Column YYYYMM is separated from date. 

I want to calculate the value of previous month YYYYMM-1 and show it on the chart

PREVIOUS month doesnt help me as its based on date 

Thanks

[Anonymous]

Did this work for anyone ? I have tried the suggested measure definition exactly but still getting BLANKs for all the months. Been searching about this for a couple of days now. I am unabe to use PREVIOUSMONTH() becasue I do not have a proper date column with contiguous dates.

[az38]

@alextarki  hi

previous month you can find as

DATE(LEFT([Column], 4), RIGHT([Column], 2)-1, 1)

[alextarki]

Thanks

How can I build the entire previous month value?

[Anonymous · Accepted solution]

HI @alextarki,

You can try this measure formula if it meets your requirement:

Measure =
VAR currYM =
    MAX ( Table[YearMonth] )
VAR prevDate =
    DATE ( LEFT ( currYM, 4 ), RIGHT ( currYM, 2 ) - 1, 1 )
VAR prevYM =
    YEAR ( prevDate ) * 100
        + MONTH ( prevDate )
RETURN
    CALCULATE (
        SUM ( Table[Amount] ),
        FILTER ( ALLSELECTED ( Table ), [YearMonth] = prevYM )
    )

Regards,

Xiaoxin Sheng