Learn T-SQL Querying (ebook)

Learn T-SQL Querying (ebook) - Opis

Transact-SQL (T-SQL) is Microsoft's proprietary extension to the SQL language used with Microsoft SQL Server and Azure SQL Database. This book will be a usefu 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 leverage them for troubleshooting. In later chapters, you will explain 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 build diagnostic queries using dynamic management views (DMVs) and dynamic management functions (DMFs) to address various challenges in T-SQL execution. Next, you will work with the built-in tools of SQL Server to shorten the time taken to address query performance and scalability issues. In the concluding chapters, this 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 the book, you will have developed the skills to determine query performance bottlenecks, avoid pitfalls, and discover the anti-patterns in use. Spis treści: 1. Anatomy of a Query2. Understanding Query Processing3. Mechanics of the Query Optimizer4. Exploring Query Execution Plans5. Writing Elegant T-SQL Query6. Easily Identified T-SQL Anti-Patterns7. Discovering T-SQL Anti-Patterns in Depth8. (...) więcej Building Diagnostic Queries Using DMVs and DMFs9. Building xEvent Profiler Traces10. Comparative Analysis of Query Plans11. Tracking Query Performance History with the Query Store12. Troubleshooting Live Queries13. Managing Optimizer Changes With the Query Tuning Assistant mniej