SQL Server Execution Plans pdf epub mobi txt 電子書 下載 2024


SQL Server Execution Plans

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Grant Fritchey
Red Gate Books
2009-3
250
$9.99
9781906434021

圖書標籤: DB   


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发表于2024-12-24

SQL Server Execution Plans epub 下載 mobi 下載 pdf 下載 txt 電子書 下載 2024

SQL Server Execution Plans epub 下載 mobi 下載 pdf 下載 txt 電子書 下載 2024

SQL Server Execution Plans pdf epub mobi txt 電子書 下載 2024



圖書描述

Editorial Review

Execution plans show you what's going on behind the scenes in SQL Server. They can provide you with a wealth of information on how your queries are being executed by SQL Server, including:

Which indexes are getting used and where no indexes are being used at all.

How the data is being retrieved, and joined, from the tables defined in your query.

How aggregations in GROUP BY queries are put together.

The anticipated load, and the estimated cost, that all these operations place upon the system.

All this information makes the execution plan a fairly important tool in the tool belt of database administrator, database developers, report writers, developers, and pretty much anyone who writes TSQL to access data in a SQL Server database.

Given the utility and importance of the tool, you'd think there'd be huge swathes of information devoted to this subject. To be sure, fantastic information is available from various sources, but there really isn't any one place you can go to for focused, practical information on how to use and interpret execution plans.

This is where my book comes in. My goal was to gather as much useful information on execution plans as possible into a single location, and to organize it in such as way that it provided a clear route through the subject, right from the basics of capturing plans, through their interpretation, and then on to how to use them to understand how you might optimize your SQL queries, improve your indexing strategy, and so on.

Specifically, I cover:

How to capture execution plans in graphical, as well as text and XML formats

A documented method for interpreting execution plans, so that you can create these plans from your own code and make sense of them in your own environment

How SQL Server represents and interprets the common SQL Server objects – indexes, views, derived tables etc – in execution plans

How to spot some common performance issues such as bookmark lookups or unused/missing indexes

How to control execution plans with hints, plans guides and so on, and why this s a double-edged sword

How XML code appears in execution plans

Advanced topics such as parallelism, forced parameterization and plan forcing.

Along the way, I tackle such topics as SQL Server internals, performance tuning, index optimization and so on. However, my focus is always on the details of the execution plan, and how these issues are manifest in these plans. If you are specifically looking for information on how to optimize SQL, or build efficient indexes, then you need a book dedicated to these topics. However, if you want to understand how these issues are interpreted within an execution plan, then this is the place for you.

SQL Server Execution Plans 下載 mobi epub pdf txt 電子書

著者簡介

Grant is currently working as a development DBA for FM Global, an industry-leading engineering and insurance company. In his time as a DBA, he has worked at three failed dotcoms, a major consulting company and a global bank. He has developed large scale applications in languages such as VB, C# and Java and has lived with SQL Server from the hoary days of 6.0, right through to 2008. His nickname at work is "The Scary DBA". He even has an official name plate, and he displays it proudly.

Grant volunteers for the Professional Association of SQL Server Users (PASS) and has written and published articles on various topics relating to SQL Server at Simple-Talk, SQL Server Central, the PASS web site, SQL Standard and the SQL Server Worldwide Users Group. He is one of the founding officers of the Southern New England SQL Server Users Group (SNESSUG). Outside work, Grant kayaks, learns and teaches self-defense, brews his own beer, chops wood to heat his house, raises his kids and helps lead a pack of Cub Scouts.


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