My current formula is below with an explanation of my data:
Would it be possible to write this in DAX?
=IFERROR(VLOOKUP(K2,K3:M40000,IF($M:$M=0,2,3),FALSE),"01/01/2010")
Column K = A Unique Value i.e Product 1, Product 2, Product 3 etc…..
Column L = Dates in order of newest to oldest
Column M...