Practice SQL Online Free
Interactive exercises & interview prep
Why use Practice Mode
Build real SQL skills with instant feedback: run queries against real databases, get your results compared to the expected output, and practice what employers actually ask in data and engineering interviews. Everything is free and no signup is required.
You can practice by schema (HR, E-commerce, School, Healthcare, Banking), by scenario (SELECT, WHERE, JOINs, subqueries, etc.), or by company (FAANG-style questions). Each question has an expected result so you know when your solution is correct.
How to use Practice Mode
Pick a mode (Schema, Scenario, or Company) at the top, then choose a category and a question from the list. Write or edit SQL in the editor, then click Run Query. Your Data Output is compared to the Expected Output automatically.
Use the View Schema button to see tables and relationships, and View Solution if you get stuck. Progress is saved in your browser so you can resume later.