Yesterday was a rebroadcast of the index internals seminar I presented last February, and I had forgotten how long it was. I was in a chat room the whole time, and the questions just kept coming, fast and (not so) furious! Thanks to all the participants for making it a really exciting 5 hours for me. I really appreciated all your enthusiasm.
My next seminar with SSWUG will be on Plan Caching and Recompiling. I always love teaching this topic, because there are so many ways you can make a major difference in performance by understanding when reusing a cached plan is a good thing and when it is NOT! This includes Parameter Sniffing and how to avoid it.
We'll look at when automatic statistics updating kicks in and when that causes recompiles, as well as looking at what other changes can cause automatic recompilation.
We'll talk about XML query plans, and -I'll show you how to access the plan cache metadata to see how to look at the plan for every query currently in cache. It's an awesome capability!
I hope to see you there!