"or simply download the data to Excel for any statistical stuff I do". Be very careful. First off, Excel can't handle more than 64,000 rows, so in many cases is not at all useful (whereas my SQL procedure is not constrained by numbers of rows or numbers of columns, and performs very fast for anything I have been able to throw at it). Second, take a look at this URL for far more learned opinions than I am qualified to give on Excel's infamous habit of giving wrong answers in many situations. Read the article, and consult the references section at the end to see what I mean. http://www.practicalstats.com/Pages/excelstats.html