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SQL Playground

Practice SQL queries in your browser. No signup, no server — powered by SQLite WebAssembly.

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How to Use SQL Playground

  1. 1

    Write your SQL

    Type or paste a SQL query into the editor. The playground comes pre-loaded with sample users and orders tables.

  2. 2

    Run the query

    Click the Run button or press Ctrl+Enter (Cmd+Enter on Mac) to execute your SQL and see results instantly.

  3. 3

    Explore the schema

    Check the schema panel at the top to see all tables and their columns. Use the quick example buttons to try common query patterns.

  4. 4

    Import your own data

    Click Import CSV to load a CSV file as a new table. Export your query results as CSV or copy them to your clipboard.

Frequently Asked Questions

No. SQLite runs entirely in your browser via WebAssembly. Your data and queries never leave your machine.

This playground uses SQLite, which supports standard SQL including JOINs, subqueries, aggregate functions, CTEs (WITH clauses), window functions, and more.

Yes. You can write CREATE TABLE statements, INSERT data, and work with your own schema. You can also import CSV files as tables.

Results are paginated and display up to 1,000 rows. There is no limit on the data stored in the in-memory database during your session.

No. The database is in-memory and resets when you refresh the page. Export your results as CSV if you need to save them.

Yes. Separate your statements with semicolons and they will be executed in order. Results from SELECT statements will be displayed.

Why Practice SQL in Your Browser?

SQL is the universal language of data. Whether you are a backend developer writing queries for production databases, a data analyst exploring datasets, or a student learning relational databases for the first time, having a fast, zero-setup environment to experiment is invaluable. This SQL playground gives you exactly that — a full SQLite database running locally in your browser via WebAssembly.

What You Can Do

The playground comes with sample users and orders tables so you can start writing queries immediately. Practice JOINs, aggregations with GROUP BY, filtering with WHERE, subqueries, and more. You can also create your own tables, import CSV files as new tables, and export results — all without leaving your browser.

Supported SQL Features

SQLite supports a wide range of standard SQL including SELECT, INSERT, UPDATE, DELETE, CREATE TABLE, JOIN, GROUP BY, HAVING, ORDER BY, subqueries, Common Table Expressions (WITH), window functions, CASE expressions, and aggregate functions like COUNT, SUM, AVG, MIN, and MAX.

Privacy First

Unlike online SQL editors that send your queries to a remote server, this tool runs entirely in your browser. The SQLite engine is compiled to WebAssembly and executes locally. Your data never leaves your machine, and there are no accounts or signups required.