QueryChoose a mission
Explore the shop data and the result you need.
A joyful way to learn SQL
Write SQL. See how the result comes together.
QueryCraft helps you learn SQL and databases through hands-on missions. Start at the beginning and learn at your own pace.
SQL · SELECT
Illustrative example
SELECT name, price FROM products WHERE price >= 10
| name | price |
|---|---|
| Coffee cup | 12 |
| Pouch | 10 |
GUIDE
QueryCraft user guide
Return to these instructions whenever you need help.
Build your SQL
Write it yourself or choose tables and conditions in the query builder.
Run and discover
Watch each step and check your answer.
Explore hints and commands
Use a hint or review a command when you need help.
From SQL basics to deeper learning
We plan to expand from PostgreSQL fundamentals to database-specific syntax and advanced SQL.
FAQ
Frequently asked questions
A few things to know before you start.
Can a beginner use QueryCraft?
Yes. Start with the basics and use the query builder and command lessons.
Can I learn without signing in?
Yes. Guest progress is stored in your current browser.
Does it use a real database?
Yes. Queries run through the server against a PostgreSQL learning database.
What if my SQL has an error?
Read the error, correct your SQL and try again.
What if I get stuck?
Open hints one at a time or review a command lesson.
Can I learn other SQL dialects?
The current course uses PostgreSQL on Supabase. Other dialects and advanced courses are planned for the future.