From your first SELECT to window functions, recursive CTEs, transactions, and query tuning — a practical, example-driven path to writing SQL with real confidence. Standard SQL · PostgreSQL · MySQL · SQLite.
What's Inside
A complete end-to-end learning path — from the relational model and everyday reading queries through joins, subqueries, window functions, transactions, indexing, and the pitfalls and best practices that separate confident SQL from guesswork. Every concept is example-driven against one small e-commerce schema.
Part I · Foundations
Part II · Reading Data
Part III · Writing & Managing Data
Part IV · Mastery
Who This Is For
Turn a business question into a correct, readable query without waiting in a queue.
Aggregate, window, and pivot with confidence — and know why a result looks off.
Write sargable queries, avoid N+1, and use transactions and indexes correctly.
Master CTEs, set operations, and schema design from one coherent reference.
A sharp refresher on ACID, isolation levels, and query-plan fundamentals.
The five recipes and clause-order rules that solve most SQL-screen questions.
Pair this reference with SQL Mastery for Capital Markets Business Analysts and get both books at one discounted price — the full end-to-end SQL reference plus the capital-markets field guide.
Ready When You Are
Instant PDF download after purchase. One-time payment, yours to keep.