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About the authors

Pedro Lopes is a Program Manager in the Database Systems group, based in Redmond, WA, USA. He has over 19 years of industry experience and has been with Microsoft for 9 years. He is currently responsible for program management of Database Engine features for in-market and vNext versions of SQL Server, with a special focus on the Relational Engine. He has extensive experience with query performance troubleshooting and is a regular speaker at numerous conferences such as SQLBits, PASS Summit, SQLIntersection, Microsoft Ignite, and Microsoft Build. He blogs about SQL on the SQL Server Team blog. He has authored several tools in the Tiger toolbox on GitHub: AdaptiveIndexDefrag maintenance solution, BPCheck, and usp_WhatsUp.

I dedicate this book to my life partner Sandra for her support through working evenings and weekends; to Bob Ward and Guillaume Kieffer that inspired me to look deeper into SQL Server and awoke the performance troubleshooter in me almost 20 years ago, whom I have the privilege of calling friends today; and to all new and experienced SQL Server users that ever had to write or fix T-SQL queries and asked: why is SQL Server doing this?

Pam Lahoud is a Program Manager in the Database Systems group, based in Redmond, WA, USA. She has been with Microsoft for 13 years and is currently responsible for program management of Database Engine features for in-market and vNext versions of SQL Server, with a special focus on the Storage Engine area. She is passionate about SQL Server performance and has focused on performance tuning and optimization, particularly from the developer's perspective, throughout her career. She is a SQL Server 2008 Microsoft Certified Master (MCM) with over 20 years of experience working with SQL Server.

To Andrew and Linus, for spending countless nights and weekends without me. To my computer illiterate friends Jodie, Liza, and Erin, who I know will proudly display this book on their shelves in spite of having no idea what any of this means. And to my mom, who bought me my first computer when I was 8 years old, and said "Sure!" when I decided adding computer science as a second major in my junior year of college seemed like a good idea.