Data Analysis Basics with SQL

Data Analysis Basics with SQL is a practical, beginner-friendly guide to one of the most in-demand skills in modern business and analytics roles. Designed for adults and students with little to no prior database experience, this book introduces the fundamentals of relational databases and teaches readers how to confidently extract, filter, and analyze data using SQL. Through clear explanations and hands-on examples, readers learn how to write effective queries, combine data across tables, and summarize results for business insights.
Core concepts such as JOINs, GROUP BY, and data normalization are explained in plain language, with real-world use cases relevant to analysts, operations teams, and decision-makers. This book focuses on building practical competence rather than memorization, helping readers understand how data is structured and how SQL is used in everyday analytical work. Key topics include: Understanding relational databases and tables Writing SELECT, WHERE, ORDER BY, and LIMIT queries Using JOINs to combine data across sources Aggregation with GROUP BY and HAVING Introduction to data normalization concepts Applying SQL skills to real business questions Data Analysis Basics with SQL is an essential stepping stone for anyone pursuing careers in data analysis, business intelligence, operations, or technology-driven roles.