SQL Server Query Tuning and Optimization

This book helps you get up to speed with both query engine internals and practical query optimization. As you progress, you'll explore ready-to-use techniques for creating high-performance queries and applications.

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Get well-versed with ready-to-use techniques for creating high-performance queries and applications

Key Features

Speed up queries and dramatically improve application performance by both understanding query engine internals and practical query optimization
Understand how the query optimizer works
Learn about intelligent query processing and what is new in SQL Server 2022

Book DescriptionSQL Server is a relational database management system developed by Microsoft. As a database server, it is a software product with the primary function of storing and retrieving data as requested by other software applications.

This book starts by describing the inner workings of the query optimizer, and will enable you to use this knowledge to write better queries and provide the query engine with all the information it needs to produce efficient execution plans. As you progress, you'll get practical query optimization tips for troubleshooting underperforming queries. The book will also guide you through intelligent query processing and what is new in SQL Server 2022. Query performance topics such as the Query Store, In-Memory OLTP and columnstore indexes are covered as well.

By the end of this book, you'll be able to get the best possible performance for your queries and applications.

What you will learn

Troubleshoot queries using methods including extended events, SQL Trace, and dynamic management views
Understand how the execution engine and query operators work
Speed up queries and improve app performance by creating the right indexes
Detect and fix cardinality estimation errors by examining query optimizer statistics
Monitor and promote both plan caching and plan reuse to improve app performance
Troubleshoot and improve query performance by using the Query Store
Improve the performance of data warehouse queries by using columnstore indexes
Handle query processor limitations with hints and other methods

Who this book is forThis book is for SQL Server developers who are struggling with slow query execution, database administrators who are tasked with troubleshooting slow application performance, and database architects who design SQL Server databases in support of line-of-business and data warehousing applications.