Mastering SQL Joins: A Practical Guide for beginners.

Introduction SQL joins allow you to combine data from multiple tables based on relationships between them. In this article, we’ll explore different types of joins using this two schemas: City Hospital Schema Nairobi Academy Schema What is a SQL Join? A join retrieves data from two or more tables using a related column. Basic Syntax SELECT columns FROM table1 JOIN table2 ON table1 . column = table2 . column ; 1. INNER JOIN Returns only records that exist in both tables. Example (City Hospital sch