The author has a website and sells a book devoted to teaching people about SQL indexing, so that's where his focus is. I wonder what kind of a pool he got; give

The author has a website and sells a book devoted to teaching people about SQL indexing, so that's where his focus is. I wonder what kind of a pool he got; given that he seems to have given it mostly to people reading his site, you'd think that it'd be people who know more about SQL indexing than the average. Most troubling to me was how people who chose the MySQL option did so much worse than pretty much every other database. (I took the MySQL option, even though I work on MS SQL these days, and got 4 out of 5.) I suppose for people who consider MySQL to be a toy RDBMS, that's less "troubling" than "confirming current perception."