Mastering SQL Join: INNER, LEFT, RIGHT, FULL - Complete Guide
SQL JOINs are the cornerstone of working with relational databases, enabling you to combine data from multiple tables based on related columns. Understanding JOINs unlocks the full power of normalized database design where related data lives across multiple tables rather than being duplicated. This comprehensive guide covers all major JOIN types with practical examples, common pitfalls, and production-ready best practices.