I've received a request from our VP of Enterprise Application Design (aka my boss) to do an hour-ish long presentation on SQL Server performance tuning. Rather than trying to distill a 500+ page book down to an a hour of me stammering, I figured it would be best to simply pick out a few of the most common performance killers and focus on those.Due to a recent debacle involving a proc that gets called several thousand times a day and a nested scalar udf... iTVF vs scalar & mTVFs is definitely on the agenda...I'm interested in knowing what other "Common Query Blunders / Performance Killers / Bad Habbits" the rest of you would talk about, if you were given this assignment.Basically, I'm looking for the low hanging fruit. The types of improvements that yield the best bang for the buck, so to speak.Any supporting articles and/or test procedures would also be appreciated... I'm not expecting anyone to take my word on anything... I'll need to be able to demonstrate the difference between the "right way" & "wrong way" with actual numbers.Thank you to everyone in advance. :-)
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