What you'll learn

Writing database logic directly in SQL can lead to repetition, inconsistency, and maintenance issues, so developers and analysts need a structured way to centralize, secure, and reuse SQL code efficiently using PostgreSQL’s powerful procedural features.

In this course, Write Reusable and Reliable Code with SQL in PostgreSQL, you’ll gain the ability to build, manage, and optimize SQL functions that make your database logic modular, consistent, and easy to maintain.

First, you’ll explore how to encapsulate business logic using user-defined functions to create reusable code that improves clarity and efficiency.

Next, you’ll discover how to enhance those functions with control structures, conditional logic, and error handling to make them flexible and reliable in real-world scenarios.

Finally, you’ll learn how to secure, manage, and optimize your functions using PostgreSQL best practices to ensure your code remains maintainable, auditable, and high-performing.

When you’re finished with this course, you’ll have the skills and knowledge needed to create robust, reusable, and production-ready database code.