Book Image

Microsoft SQL Server 2012 Performance Tuning Cookbook

Book Image

Microsoft SQL Server 2012 Performance Tuning Cookbook

Overview of this book

As a DBA you must have encountered a slow running application on SQL Server, but there are various factors that could be affecting the performance. If you find yourself in this situation, don't wait, pick up this book and start working towards improving performance of your SQL Server 2012. SQL Server 2012 Performance Tuning Cookbook is divided into three major parts -- Performance Monitoring, Performance Tuning, and Performance Management--that are mandatory to deal with performance in any capacity. SQL Server 2012 Performance Tuning Cookbook offers a great way to manage performance with effective, concise, and practical recipes. You will learn how to diagnose performance issues, fix them, and take precaution to avoid common mistakes. Each recipe given in this book is an individual task that will address different performance aspects to take your SQL Server's Performance to a higher level.The first part of this book covers Monitoring with SQL Server Profiler, DTA, System statistical function, SPs with DBCC commands, Resource Monitor & Reliability, and Performance Monitor and Execution Plan. The second part of the book offers Execution Plan, Dynamic Management Views, and Dynamic Management Functions, SQL Server Cache and Stored Procedure Recompilations, Indexes, Important ways to write effective TSQL, Statistics, Table and Index Partitioning, Advanced Query tuning with Query Hints and Plan Guide, Dealing with Locking, Blocking and Deadlocking and Configuring SQL Server for optimization to boost performance.The third and final part gives you knowledge of performance management with help of Policy Based Management and Management with Resource Governor.
Table of Contents (28 chapters)
Microsoft SQL Server 2012 Performance Tuning Cookbook
Credits
About the Authors
Acknowledgement
Acknowledgement
About the Reviewers
www.PacktPub.com
Preface
Index

"Trust" your foreign key to gain performance


We have already studied what DRI can do and by how much it can increase performance, in the previous recipe. This recipe is also related to DRI, which shows that even a single small option can play a big role as far as performance is concerned.

Getting ready

We are going to see the sys.foreign_keys system view to get information about the foreign key we defined in the table schema. Concentrate on the field is_not_trusted, in the view, which gives you information whether your foreign key is trusted or not.

How to do it...

Follow the steps given here to perform this recipe:

  1. First of all, we have to create two tables for demonstration of this recipe from the AdventureWorks2012 database:

    IF OBJECT_ID('ProductDemo') IS NOT NULL
    DROP TABLE ProductDemo
    GO
    IF OBJECT_ID('ProductModelDemo') IS NOT NULL
    DROP TABLE ProductModelDemo
    GO
    select * into ProductModelDemo from Production.ProductModel
    select * into ProductDemo from Production.Product WHERE ProductModelID...