Counting unique number of products that were on offer in the past and are now

[Faustyna]

Hi!

I need to count unique number of products that were in the assortment, for example, in January and are now. I can't do normally: calculate(DISTINCTCOUNT(Assort[ProductId]),month(Assort[AssortDate])=1), because I will count SKUs that were in the assortment in January, and I wanted to count those that were in January and are still there.

Does anyone have any idea how to count it?I would like to get a table that will show by months the number of products that were on sale in January and are still sold in each month.

I would be grateful for your help

Faustina

[johnt75 · Accepted solution]

Try creating a measure like

Still on sale =
VAR JanProducts =
    CALCULATETABLE (
        VALUES ( Assort[ProductId] ),
        MONTH ( Assort[AssortDate] ) = 1
    )
VAR CurrentMonth =
    MONTH ( MAX ( 'Date'[Date] ) )
VAR CurrentProducts =
    CALCULATETABLE (
        VALUES ( Assort[ProductId] ),
        MONTH ( Assort[AssortDate] ) = CurrentMonth
    )
RETURN
    COUNTROWS ( INTERSECT ( CurrentProducts, JanProducts ) )

[Faustyna]

Thank you so much for a help!!