The Complete, Project-Based MySQL Guide — From Your First SELECT to Production-Ready Database Mastery: MySQL, SQL, database, guide, mastery

Most SQL books teach you syntax. This one teaches you the job.

If you've ever finished a SQL tutorial and still felt lost the moment a real business question landed on your desk, you're not alone. Query By Query was written to close exactly that gap — between knowing what a JOIN does and knowing which query a real report actually needs.

Every single example in this book runs against one continuously-evolving sample database — a realistic online store with customers, orders, products, and reviews. You'll build it in Chapter 1, then use it in every chapter after that, all the way through recursive queries, window functions, triggers, and replication. By the last page, you won't just have memorized a hundred disconnected snippets — you'll have watched one small business's data model grow into something that supports real reporting, real automation, and real performance decisions, the same way it would at an actual company.

Inside, you'll find:

• 34 chapters, beginner to advanced — SELECT statements to recursive CTEs, window functions, stored procedures, triggers, transactions, and replication, each with plain-English explanations, not just syntax dumps
• 100 practice problems, fully worked — from single-table basics to real-world reporting challenges, so you can test yourself before checking the answer
• Three complete database design case studies — an online store, a gym management system, and a blog/CMS — showing you how to design a schema, not just how to query one someone else built
• A full performance-tuning walkthrough — a real, step-by-step diagnosis of a slow production query using EXPLAIN, from symptom to fix to verification
• Real "Use Case" callouts throughout — every concept is grounded in an actual business question someone really asked, and every "Pitfall" box flags the mistake that actually trips people up in production
• Eight reference appendices — a function quick-reference, data type guide, command cheat sheet, glossary, common MySQL error field guide, and a dedicated SQL interview-prep chapter with fully talked-through walkthroughs

Who this book is for:
Aspiring data analysts and backend developers who want to actually think in SQL, bootcamp grads who know the syntax but freeze on real problems, and working engineers who want to go from "I can write a SELECT" to "I can design the schema, write the report, and fix the slow query when it breaks."

Who this book is not for:
If you just want a syntax reference to skim once, this isn't it — this is a book you work through with a terminal open, one query at a time.

Stop collecting SQL trivia. Start building the instinct. Open a terminal, and query by query, become the person your team asks when the database needs an answer.