PostgreSQL WHERE Clause Full Tutorial | Comparison, Logical Operators & Common Mistakes

Learn the PostgreSQL WHERE Clause from beginner to advanced with real SQL query examples, comparison operators, logical operators, AND/OR conditions, precedence rules, parentheses traps, and best practices.

In this video, we will cover:

✅ What is WHERE Clause
✅ SQL Comparison Operators
✅ AND vs OR Operators
✅ Logical Operators in PostgreSQL
✅ Query Filtering Techniques
✅ Parentheses Precedence Trap
✅ Real SQL Query Solving
✅ Best Practices for Faster Filtering
✅ Common SQL Mistakes Beginners Make

This tutorial is designed for beginners who want to master SQL filtering properly using PostgreSQL with practical examples and visual explanations.

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⌛TIMELINE⏳
00:00 Introduction to WHERE Clause
01:02 What is WHERE Clause?
04:35 WHERE Clause Syntax & Different Ways
06:50 Best Practices for WHERE Clause (Very Important)
10:20 Get Source Code & Support My Channel
11:15 Query 1 — Solve Using WHERE Clause
13:18 Query 2 — Comparison Operators Practice
14:35 Query 3 — AND Operator Example
18:45 Query 4 — OR Operator Example
20:05 Query 5 — Important Filtering Logic
23:50 Very Important Beginner Mistake
26:20 Query 6 — Parentheses Precedence Trap
32:25 Support My Channel ❤️