What is SQL?
SQL (Structured Query Language) is the standard language for managing and querying relational databases. This SQL cheat sheet covers essential commands including SELECT, INSERT, UPDATE, DELETE, and JOIN operations.
SQL Cheat Sheet & Playground
Master SQL with our comprehensive SQL cheat sheet and interactive playground. Practice SQL queries with a real SQLite database running in your browser.
SQL Playground Live
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Database Schema Browser
SQL Cheat Sheet Quick Reference Guide
How to Use This Playground
Browse our SQL cheat sheet on the left panel, click any example to insert it into the editor, then execute to see results. Your data persists in IndexedDB - it's saved even after closing the browser.
SQL Commands Covered
Our SQL reference includes: SELECT queries, WHERE clauses, JOIN types (INNER, LEFT, RIGHT), GROUP BY, HAVING, ORDER BY, subqueries, CTEs, window functions, and data modification statements.
Practice SQL Online
This interactive SQL playground runs a real SQLite database in your browser using WebAssembly. Perfect for learning SQL syntax, testing queries, and experimenting with database operations.