We have several Item codes from different manufacturers. Each of the item codes have different Introduction Month.
For ex: Item1 is introduced in Jan1995, Item2 in Feb2006 etc.
Every month we get the report for all the Item codes. Here is our reporting requirement.
(Initial 3 months from Intro month)
Item1 publisher1 quantity
Item2 publisher2 quantity
Any suggestions are greatly appreciated and rewarded.