• I don't claim to be a SQL guru by any means, but I disagree with the answer to this question. Sure it could be any of the values presented, but you can't guarantee that it will be one of those three values as it very well could be 6, 8, or 10, for example. I think the problem most of us had with this question was the word choice: 'guarantee' implies that it would have to be one of the supplied answers and no others. Aside from that, good question.