Functions and Operators in PostgreSQL: Logical Operators || PostgreSQL F...

In this video, we dive into Logical Operators in PostgreSQL, an essential part of writing powerful and efficient queries. Logical operators help us combine multiple conditions and make decisions in our SQL statements.

We’ll cover the three main operators — AND, OR, and NOT — along with PostgreSQL’s three-valued logic system (TRUE, FALSE, and NULL). You’ll also learn how these operators work through truth tables and practical examples using an employees table.

📌 What you’ll learn in this video:

• Introduction to PostgreSQL Logical Operators

• Detailed explanation of AND, OR, and NOT

• How NULL affects logical operations

• Using logical operators in WHERE clauses

• Real-world examples with CREATE TABLE and INSERT statements

By the end of this tutorial, you’ll have a strong understanding of how logical operators work in PostgreSQL, enabling you to write more accurate and efficient queries.

👉 Don’t forget to check out the Full PostgreSQL Playlist for a complete step-by-step guide on mastering PostgreSQL.

Data Types in PostgreSQL: Binary (BYTEA) Data Types || PostgreSQL Full P...

📦 Welcome to Episode #48 of our PostgreSQL Full Playlist! In this video, we dive deep into one of the most important and specialized PostgreSQL data types — Binary Data Types, specifically the BYTEA type.

🔍 The BYTEA data type is used to store binary data like files, images, encrypted content, or any non-textual byte stream. We’ll walk you through:

• What is BYTEA and when to use it

• Input formats: Hex vs Escape (with full examples)

• How to insert and retrieve binary data

• Usage of encode() and decode() functions

• How PostgreSQL automatically compresses large binary objects using TOAST

• Important security and performance tips for handling BYTEA values

🎓 Whether you're a database developer, backend engineer, or someone diving into PostgreSQL internals — this video will give you both the theory and hands-on practice to master binary data management in PostgreSQL.

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🧠 Watch the full PostgreSQL series for deep database insights.