Data Types In PostgreSQL: Character Data Types || PostgreSQL Full Playli...

Welcome to Part 45 of our PostgreSQL Full Course Playlist! 🚀

In this video, we dive deep into one of the most fundamental aspects of PostgreSQL — Character Data Types. You'll learn the key differences, use cases, and behaviors of:

• CHAR(n) – fixed-length, space-padded strings

• VARCHAR(n) – variable-length strings with a defined limit

• TEXT – flexible and unbounded character storage

• Internal types like bpchar, "char", and name

🎯 We'll cover real-world examples like storing employee codes, customer names, blog content, product SKUs, and user feedback. You'll also learn the implications of trailing spaces, padding, truncation, and storage behavior.

💡 This session is crucial for anyone designing tables, optimizing storage, or simply trying to choose the best string type in PostgreSQL.

Whether you're a student, backend developer, or DBA — by the end of this video, you'll know when to use TEXT over VARCHAR, why CHAR can be risky, and how PostgreSQL handles string storage under the hood.

📌 Topics Covered:

• Syntax & behavior of CHAR, VARCHAR, and TEXT

• Storage internals (TOAST, compression, padding)

• Behavior with trailing spaces

• Comparison semantics and limitations

• Best practices for choosing the right type

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📽️ Next Video: Data Types In PostgreSQL – Binary Data Types