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Categories Download eBook: SQL Server Execution Plans, Second Edition Bookmark and Share

Book Catagory:SQL Server
Title SQL Server Execution Plans, Second Edition
Author(s) Grant Fritchey
Publisher: Red gate books (October 12, 2012)
Paperback 344 psges
Language: English
ISBN-10: 190643493X
ISBN-13: 978-1906434939
Book Description

This book is the only in-depth look at how to improve your SQL query performance through careful design of execution plans

Every day, out in the various online forums devoted to SQL Server, and on Twitter, the same types of questions come up repeatedly: Why is this query running slowly? Why is SQL Server ignoring my index? Why does this query run quickly sometimes and slowly at others? My response is the same in each case: have you looked at the execution plan? execution plans.

An execution plan describes what's going on behind the scenes when SQL Server executes a query. It shows how the query optimizer joined the data from the various tables defined in the query, which indexes it used, if any, how it performed any aggregations or sorting, and much more. It also estimates the cost of all of these operations, in terms of the relative load placed on the system. Every Database Administrator, developer, report writer, and anyone else who writes T-SQL to access SQL Server data, must understand how to read and interpret

This book leads you right from the basics of capturing plans, through how to interrupt them in their various forms, graphical or XML, and then how to use the information you find there to diagnose the most common causes of poor query performance, and so optimize your SQL queries, and improve your indexing strategy.
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SQL Server Execution Plans, Second Edition

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