Real-World SQL for Analysts: 90 Practice Problems to Get You Job-Ready

Want to become job-ready in SQL? Don’t just learn syntax - solve real business problems.

SQL is one of the most in-demand skills for analysts today - but most resources stop at theory. Real-World SQL for Analysts takes you beyond textbook learning and into the world of practical problem-solving. Whether you're preparing for interviews or trying to level up at work, this book gives you 90 hands-on exercises that mirror the kinds of questions analysts face every day.

You’ll work on a single, consistent dataset (Superstore) that simulates real business data. No complicated setup required. All problems are designed to sharpen your analytical thinking and prepare you for real-life SQL challenges.

What’s inside:

90 Practice Problems: 40 Easy, 30 Intermediate, 20 Hard

One consistent dataset used across all problems

Covers joins, aggregations, window functions, CTEs, subqueries & more

No fluff - only what real analysts use on the job

Solutions with explanations provided

Perfect for:

Beginner to intermediate SQL learners

Data analysts, aspiring data scientists, and business analysts

Job seekers preparing for technical interviews

Anyone who wants to get fluent in solving real data problems using SQL

You’ll be able to access the problems on SQL90.com, where you can write and test your queries without installing anything.

By the end of this book, you'll:

Think like an analyst

Solve real business problems using SQL

Be confident for interviews and ready to work with real data

Stop memorizing. Start solving. The best way to learn SQL is through hands-on practice with real-world problems.

Happy Querying!