SQL Server Query Tuning and Optimization

Get well-versed with ready-to-use techniques for creating high-performance queries and applicationsKey FeaturesSpeed up queries and dramatically improve application performance by both understanding query engine internals and practical query optimizationUnderstand how the query optimizer worksLearn about intelligent query processing and what is new in SQL Server 2022Book 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 learnTroubleshoot queries using methods including extended events, SQL Trace, and dynamic management viewsUnderstand how the execution engine and query operators workSpeed up queries and improve app performance by creating the right indexesDetect and fix cardinality estimation errors by examining query optimizer statisticsMonitor and promote both plan caching and plan reuse to improve app performanceTroubleshoot and improve query performance by using the Query StoreImprove the performance of data warehouse queries by using columnstore indexesHandle query processor limitations with hints and other methodsWho 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.