Dearest User: before you try to score office points by showing up someone else's error you should do a little research first to make certain the error is actually the fault of the person you're trying to show up. Definitely do not start out in email, copying their boss, your boss, their boss's boss, and your boss's boss. Why not? Because the person you're trying to show up might keep excellent documentation and notes and be able to prove in seconds that the error was actually the fault of your own boss. And you just pointed out your own boss's error to their boss.
Sincerely,
Somebody who keeps every relevant email, meticulously placed in folders by topic, and writes copious, dated, decision-relevant comments in his SQL.