pgGym
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Learn PostgreSQL · in your browser

Learn SQL by
actually writing it.

"If you didn't write the SQL, it didn't count."

A real PostgreSQL engine runs right here — no install, no account, no setup. Open a lesson, write a query, run it, and get instant feedback. Five belts take you from your first SELECT to production.

Write your first query 7 lessons live · free
The belt journey

Five belts, one path

Each belt is a level of mastery. Start at green — write SQL without fear.

  1. 1

    Beginner

    In progress

    Write SQL without fear
  2. 2

    Intermediate

    In progress

    Answer questions with data

  3. Advanced

    Coming soon

    Design and give logic to the database

    Lessons for this belt are being written. The belt map shows you exactly where the path leads.

  4. Ninja

    Coming soon

    Make it fly

    Lessons for this belt are being written. The belt map shows you exactly where the path leads.

  5. Insane

    Coming soon

    Run it in production

    Lessons for this belt are being written. The belt map shows you exactly where the path leads.