Joe Chang: Statistics and Performance for SQL Server Developers

Joe Chang, Consultant SolidQ
Joe is a SQL Server Consultant. Joe develops tools for automating SQL XML plan analysis, cross-referencing index usage to execution plans. He has models for predicting SQL Server performance early in the design phase, and taking the guess work out of performance tuning. He has built a more complete model than the SQL Server internal cost based query optimizer, including processor and system architecture dependencies and logic costs, which are not incorporated in the cost based optimizer.

http://www.qdpma.com/JoeChang.html
http://sqlblog.com/blogs/joe_chang/default.aspx