I will try my best to describe my situation. I have a table with 4 colums: Date, Equipment, x, and y. "X and Y" don't matter for this problem. The table is a history of a certain part change for each piece of equipment. What I am wanting to do is look at each equipment name (there are 12 at this time) and find the most recent date for the part change on each. Given that information, I want to calculate which of those values is the oldest. Basically, given the history, I'm wanting to know which piece of equipment has had the longest amount of time go by without the part change. Any help to lead me in the right direction would be appreciated.