I am led to produce a trend showing the evolution of sales by product since its creation date to date.
The result should display, if I filter on a given product, the evolution of sales accumulated month after month. Su I do not filter on any product the chart must display the evolution of the sales of all the products since the date of production of the first product to date.
I am confronted with the following problem: what should be the dimension? Monthname (Prodit creation date) or Monthname (Date of sale)?
