SQL Server 2005查询统计信息

Question

Where can I find some in-depth information on tuning statistics in SQL Server 2005?

I need to really delve in to what statistics are being used in a number of different queries, how they are interacting with indexes, how/when/where to use custom statistics (over and above what the database tuning advisor recommends), when/how to update the statistics for the best performance etc. etc.

Does anyone know of any good articles/webcasts/books around this subject?

Thanks in advance,

Tom

Answer 1

本书提供了有关性能调优的相当详细的信息， 内容包括Microsoft®SQLServer（TM）2005：查询调优和优化

Answer 2

I suggest you review the following comprehensive Microsoft TechNet reference.

Statistics Used by the Query Optimizer

Answer 3

I suggest you visit http://sqlserverpedia.com/ and look for blog/article/demo/screencast/podcast specific to your needs. SQLServerPedia is a free Premier Online SQL Server resource.

Or are you specifically asking these questions right now:

"Why is this query running slow? Is my index getting used? Why does this query run faster than this query?"

The book " Dissecting SQL Server Execution Plans " will help you on this regard. A free ebook version is available here .

;-) MarlonRibunal