SQL from Scratch — Tutorial Series
Overview A complete beginner-to-intermediate SQL course written as a series of posts on this site. Each part builds on the previous, using consistent real-world datasets throughout. What’s Covered Introduction to SQL and Relational Databases Basic Queries Advanced Operators Expressions Aggregation Functions Multiple Table Queries Queries within Queries Creating Database Objects Maintaining Tables Datasets Used All exercises use consistent datasets available for download on each post page. Tech Stack Database — PostgreSQL, MySQL Content — Hugo, Markdown