Date of first sales per product

[oslosa]

Hi I have a dataset of looking like |Product name|Date|Sales| and I want to find the date of first sales, i.e. the Date for each product corresponding to the first non-zero value. In excel I would display the data in matrix format and use an Index(match)-function, but it is more tricky in the list format of power bi.

I am trying something like this, but I am not sure how to make the filter so that the measure runs per product (Product name=Product name is probably not filtering anything):

Launch year =

MAXX (

TOPN ( 1, FILTER ( Table ,[Product name]=[Product name]&&[Net turnover (OC)] <> 0 ),[Date].[Year], ASC ),

[Date].[Year]

)

This retrieves the first non-zero value for the sumtotal, so all products get the same launch year. Can anyone help me get the individual dates per product?

[Anonymous · Accepted solution]

you could use a calculated column with the following formula:

First Sale Date = minx(filter('Table','Table'[Product]=earlier('Table'[Product]) && 'Table'[Sales]>0),'Table'[Sale Date])