Multiple table joins chain together to combine data from 3+ tables. Each join adds another table to the result set.

Joins execute left-to-right. First join combines tables 1 and 2, result joins with table 3, etc. Mix INNER and LEFT joins based on requirements.

Production queries routinely join 5-10 tables. Understanding multi-table joins is essential for real-world database work. This is where SQL complexity shows.

Every complex report joins multiple tables. Order details need customers, products, categories, shipping info. Employee reports need departments, locations, managers, projects.