I think what Jeff is getting at, and I agree, is that you shouldn't necessary use the first solution you're given. Mark himself admitted that it's "quick and dirty" and that it won't work very well once your table starts to grow; he even suggested another method. I linked to an article that shows you half a dozen or so ways of doing it. I recommend you evaluate them all to see which works best. Yes, it's more work for you now, but it'll pay in terms of future performance and and of how well prepared you'll be next time you have to implement something like this.

John