PostgreSQL SELECT List Functions Tutorial

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Boost your PostgreSQL queries with built-in functions in the SELECT list—transform, format, and analyze data instantly!

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Description
⚡ Supercharge Your PostgreSQL Queries with Built-in Functions!
In this practical tutorial, we explore how to use PostgreSQL’s built-in functions directly within the SELECT list. These powerful tools allow you to transform, format, analyze, and enhance your output—without writing extra logic or changing your database structure.

📌 Whether you're formatting names, manipulating strings, calculating lengths, or changing case, PostgreSQL’s built-in functions make your queries smarter and more readable.

🎯 What You'll Learn:
✅ How to use string functions like UPPER() and LENGTH()
✅ Real-world examples from employee data
✅ Use cases for formatting names and labels
✅ Writing cleaner, dynamic SELECT statements
✅ Best practices for using functions in reporting and APIs

💡 Bonus: Learn how these functions integrate perfectly with aliases, expressions, and JSON transformations!

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