Inside Microsoft® SQL Server(TM)
2005: Query Tuning and Optimization
by Adam Machanic
Review Of Inside Microsoft Sql Server 2005 Query Tuning And Optimization
Dive deep into the internals of query tuning and optimization in SQL
Server 2005 with this comprehensive reference. Understanding the
internals of SQL Server helps database developers and administrators to
better create, access, and effectively process information from enterprise
data. Written by experts on SQL Server, this volume from the Inside
Microsoft SQL Server series of books focuses on query tuning and
optimization. Youll take an in-depth look at the best ways to make queries
more efficient and effective, while maximizing existing resources.
Includes extensive code samples and table examples to help database
developers and administrators understand the intricacies and help
promote mastery of query tuning and optimization.

Personal Review: Inside Microsoft® SQL Server(TM) 2005:
Query Tuning and Optimization by Adam Machanic
SQL performance tuning is probably one of those things you can do to
really make a HUGE difference in performance. Let's put this in
perspective: take a typical application, if you can improve the performance
by 100% then you really made a huge improvement. You can improve a
SQL query by 1000% with 2 lines of code (sometimes all you have to do is
take away a % sign). If you can make a query sargable so that the
optimizer can do an index seek instead of an index scan your query might
go from 12 seconds to 200 milliseconds. Now try doing that in an
application, even if you change all the string concatenation to use a
stringbuilder instead of creating new strings all the time you will not get
such a drastic performance improvement. I am sure you get the point by
now, let's talk about the book.
This book is part 4 of the Inside Microsoft SQL Server 2005 series, it is
written by Kalen Delaney and five other authors. There are 6 chapters in
this book
1 A Performance Troubleshooting Methodology
This chapter explains some typical things that affect performance and also
gives a troubleshooting overview
2 Tracing and Profiling
This chapter explains how to use the profiler and how to analyze traces.
SQL Server's built-in traces are also covered
3 Query Execution
This chapter gives a query processing and execution overview. It explains
how to read plans and goes into a lot of detail about analyzing plans
4 Troubleshooting Query Performance
This chapter explains how to detect problems in plans, how to improve
queries and some best practices
5 Plan Caching and Recompilation
This chapter goes into detail about plan caching and recompilation and
how to troubleshoot plan cache issues
6 Concurrency Problems
The final chapter deals with concurrency (locking, blocking and
deadlocking)
This is an excellent book for an intermediate/advanced developer. There is
so much new stuff in SQL Server 2005 compared to 2000 to help you with
tuning queries that you probably want to read each chapter several times.
The Dynamic Management Views are a big help and this book shows you
how to use them. Some other cool stuff in this book is the discussion of
internal tables, undocumented DBCC commands and undocumented trace

flags to discover information which could help you determine much faster
what the cause of a performance problem might be. Some pages are
packed with so much information that you need to pause for a second and
process all that info (I have read some pages two to three times in a row).
You will also find out that there are more joins besides left, full and outer.
Page 137 for example has a nice table with the three Physical Join
Operators: Nested Loop Join, Hash Join and Merge Join. This table lists
the characteristics for each of these joins. If you are an intermediate to
advanced developer then I highly recommend this book.
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