Writing efficient SQL Server queries is more than just a technical necessity; it’s the key to unlocking performance, scalability, and reliability in database-driven applications. Poorly optimized queries can slow down entire systems, consuming excessive resources and leading to frustrating delays for end users. On the other hand, well-written queries can significantly improve execution speed, reduce CPU and memory usage, and make applications more responsive.
This book presents 21 best practices for writing optimized SQL Server queries. Each best practice is designed to help you avoid common pitfalls while maximizing query performance. Whether you're a database developer, DBA, or someone who frequently writes SQL queries, these techniques will help you refine your skills and build a strong foundation in SQL Server optimization.