SQL Mastery: Practical SQL Development and Performance Optimization

Prem Mohan Tyagi

Apr. 2026 · Authors Click Publishing

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SQL Mastery is your definitive guide to the world’s most essential data language. Whether you’re writing your first query or optimizing enterprise-scale databases, this book transforms how you think about and work with data. You’ll move from foundational SELECT statements to advanced analytical patterns used in real-world production systems. Learn joins, window functions, and CTEs. Design schemas that scale. Optimize queries from minutes to milliseconds. Understand how databases execute queries, how optimizers make decisions, and how small design choices impact performance at scale. But this isn’t just a syntax reference. SQL Mastery teaches you to think in SQL to see data problems clearly and design efficient, elegant solutions. You’ll understand not only what to write, but why it works and how it performs in production environments. Packed with practical examples, performance insights, and real-world scenarios, this book is built for professionals who want to move beyond writing SQL to truly mastering it. Perfect for developers, analysts, data engineers, DBAs, architects, DevOps professionals, and anyone serious about working with data.

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Prem Mohan Tyagi is a technologist, architect, and Full-Stack Software Developer with hands-on experience in software development and database engineering since 2005. Over the years, he has worked across diverse domains including healthcare, fintech, revenue cycle management (RCM), SaaS platforms, and cloud-native ecosystems designing and delivering scalable, secure, and high-performance data-driven systems deployed in real-world production environments.