QueryLab Documentation

Master SQL and MongoDB queries with our comprehensive guides and interactive examples

Welcome to QueryLab! 🚀

What is QueryLab?

QueryLab is an interactive platform for learning and practicing database queries without any installation. Practice SQL (SQLite) and MongoDB queries directly in your browser with instant feedback.

Quick Start Guide

  1. Choose Your Database Type: Select between SQL (SQLite) or MongoDB mode
  2. Select a Sample Database: Choose from Users & Orders, Blog, E-commerce, or create your own Custom database
  3. View the Schema: Click the "Show" button to see the database structure
  4. Write Your Query: Use the Monaco editor with syntax highlighting
  5. Execute: Click "Execute Query" to run your code and see results
  6. Get Help: If you encounter errors, use the AI powered help feature

Dual Database Support

Practice both SQL and MongoDB queries in one place

Interactive Editor

Syntax highlighting and auto-completion

AI Powered Help

Get intelligent explanations for query errors

Instant Results

See query results in real-time

💡 Pro Tip

Start with the sample queries for each database type to understand the syntax, then modify them to create your own queries. Learning by doing is the best approach!