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SQL tuning

Author: Dan Tow
Publisher: Sebastopol, CA ; Farnham : O'Reilly, 2003.
Edition/Format:   eBook : Document : EnglishView all editions and formats
Summary:
A poorly performing database application not only costs users time, but also has an impact on other applications running on the same computer or the same network. SQL Tuning provides an essential next step for SQL developers and database administrators who want to extend their SQL tuning expertise and get the most from their database applications.There are two basic issues to focus on when tuning SQL: how to find  Read more...
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Genre/Form: Electronic books
Additional Physical Format: Print version:
Tow, Dan.
SQL tuning.
Beijing ; Farnham : O'Reilly, 2003
(DLC) 2004299621
(OCoLC)53460844
Material Type: Document, Internet resource
Document Type: Internet Resource, Computer File
All Authors / Contributors: Dan Tow
ISBN: 0596005733 9780596005733 9780596552367 059655236X
OCLC Number: 54369067
Notes: "Covers Oracle, DB2 & SQL server"--Cover.
"Generating optimal execution plans"--Cover.
Includes index.
Description: 1 online resource (xix, 314 pages) : illustrations
Contents: Foreword Preface 1. Introduction Why Tune SQL? Who Should Tune SQL? How This Book Can Help A Bonus Outside-the-Box Solutions 2. Data-Access Basics Caching in the Database Tables Indexes Uncommon Database Objects Single-Table Access Paths Calculating Selectivity Joins 3. Viewing and Interpreting Execution Plans Reading Oracle Execution Plans Reading DB2 Execution Plans Reading SQL Server Execution Plans 4. Controlling Execution Plans Universal Techniques for Controlling Plans Controlling Plans on Oracle Controlling Plans on DB2 Controlling Plans on SQL Server 5. Diagramming Simple SQL Queries Why a New Method? Full Query Diagrams Interpreting Query Diagrams Simplified Query Diagrams Exercises 6. Deducing the Best Execution Plan Robust Execution Plans Standard Heuristic Join Order Simple Examples A Special Case A Complex Example Special Rules for Special Cases Exercise 7. Diagramming and Tuning Complex SQL Queries Abnormal Join Diagrams Queries with Subqueries Queries with Views Queries with Set Operations Exercise 8. Why the Diagramming Method Works The Case for Nested Loops Choosing the Driving Table Choosing the Next Table to Join Summary 9. Special Cases Outer Joins Merged Join and Filter Indexes Missing Indexes Unfiltered Joins Unsolvable Problems 10. Outside-the-Box Solutions to Seemingly Unsolvable Problems When Very Fast Is Not Fast Enough Queries that Return Data from Too Many Rows Tuned Queries that Return Few Rows, Slowly A. Exercise Solutions B. The Full Process, End to End Glossary Index
Responsibility: Dan Tow.

Abstract:

Dan Tow outlines a timesaving method he has developed for finding the optimum execution plan -rapidly and systematically- regardless of the complexity of the SQL or the database platform being used.  Read more...

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