Learn T-SQL Querying

Troubleshoot query performance issues identify anti-patterns in code and write efficient T-SQL queriesKey FeaturesDiscover T-SQL functionalities and services that help you interact with relational databasesUnderstand the roles tasks and responsibilities of a T-SQL developer Explore solutions for carrying out database querying tasks database administration and troubleshootingBook DescriptionTransact-SQL (T-SQL) is Microsoft's proprietary extension to the SQL language that is used with Microsoft SQL Server and Azure SQL Database. This book will be a useful guide to learning the art of writing efficient T-SQL code in modern SQL Server versions as well as the Azure SQL Database.The book will get you started with query processing fundamentals to help you write powerful performant T-SQL queries. You will then focus on query execution plans and learn how to leverage them for troubleshooting. In the later chapters you will learn how to identify various T-SQL patterns and anti-patterns. This will help you analyze execution plans to gain insights into current performance and determine whether or not a query is scalable. You will also learn to build diagnostic queries using dynamic management views (DMVs) and dynamic management functions (DMFs) to address various challenges in T-SQL execution. Next you will study how to leverage the built-in tools of SQL Server to shorten the time taken to address query performance and scalability issues. In the concluding chapters the book will guide you through implementing various features such as Extended Events Query Store and Query Tuning Assistant using hands-on examples.By the end of this book you will have the skills to determine query performance bottlenecks avoid pitfalls and discover the anti-patterns in use.Foreword by Conor Cunningham Partner Architect - SQL Server and Azure SQL - MicrosoftWhat you will learnUse Query Store to understand and easily change query performanceRecognize and eliminate bottlenecks that lead to slow performanceDeploy quick fixes and long-term solutions to improve query performanceImplement best practices to minimize performance risk using T-SQLAchieve optimal performance by ensuring careful query and index designUse the latest performance optimization features in SQL Server 2017 and SQL Server 2019Protect query performance during upgrades to newer versions of SQL ServerWho this book is forThis book is for database administrators database developers data analysts data scientists and T-SQL practitioners who want to get started with writing T-SQL code and troubleshooting query performance issues through the help of practical examples. Previous knowledge of T-SQL querying is not required to get started on this book. About the Author Pedro Lopes is a Program Manager in the Database Systems group based in Redmond WA USA. He has over 19 years of industry experience and has been with Microsoft for 9 years. He is currently responsible for program management of Database Engine features for in-market and vNext versions of SQL Server with a special focus on the Relational Engine. He has extensive experience with query performance troubleshooting and is a regular speaker at numerous conferences such as SQLBits PASS Summit SQLIntersection Microsoft Ignite and Microsoft Build. He blogs about SQL on the SQL Server Team blog. He has authored several tools in the Tiger toolbox on GitHub: AdaptiveIndexDefrag maintenance solution BPCheck and usp_WhatsUp.Pam Lahoud is a Program Manager in the Database Systems group based in Redmond WA USA. She has been with Microsoft for 13 years and is currently responsible for program management of Database Engine features for in-market and vNext versions of SQL Server with a special focus on the Storage Engine area. She is passionate about SQL Server performance and has focused on performance tuning and optimization particularly from the developer's pers