Comment Re:Google? wtf (Score 1) 86
It's easy to have unique keys in your spreadsheet so that you can easily relate information on different sheets to one another. The problem is, actually doing the processing that a SQL server would do trivially is irritating, and then it will be processed slowly every time. Whatever Excel does or doesn't cache, it isn't enough. You can do big complicated things, but they work slowly, and maintaining it is irritating at best. When you do complicated things either your formulas get long, or you wind up having to write code, or in fact often it's both. At that point you're way better off IMO doing it in something else so that at least performance is good when you're done, and you never have to screw with editing a long formula.