Applying SQL: The Retail Database Challenge

Learning SQL syntax is one thing, but applying it to messy, real-world business data is where true data mastery begins. This course helps you transition from writing basic queries to solving complex business problems using a realistic retail database. You will learn to navigate structured datasets and extract actionable insights just like a professional data analyst. What you'll learn: - Understand relational database structures and core SQL terminology - Write multi-table JOINs to merge sales, inventory, and customer data - Apply aggregation functions and Common Table Expressions (CTEs) to organize complex queries - Analyze customer behavior and sales trends using modern window functions - Solve realistic business scenarios like tracking low stock and calculating customer lifetime value - Practice writing clean, optimized SQL queries following modern industry standards Starting with foundational database concepts and schema layouts, you will progress through a series of written business scenarios that simulate real-world analytical tasks. This text-only course is designed for beginners who know basic SQL syntax and want to build practical, job-ready query skills with no advanced prerequisites. Begin reading today and build the confidence to tackle real-world data challenges.