SQL Playground & Query Runner
Write schema and seed SQL, then run queries against an in-memory database.
About the SQL Playground & Query Runner
An in-browser SQL sandbox: edit a schema/seed SQL block to build a fresh in-memory SQLite database, then write and run queries against it. Comes with a small demo schema and sample JOIN, GROUP BY, and subquery buttons to get started, plus CSV/JSON export of results. Powered by sql.js (SQLite compiled to WebAssembly) — everything runs locally.
Examples
Join query
SQLSELECT c.name, o.product FROM customers c JOIN orders o ON o.customer_id = c.id;Output
SQLAda Lovelace | LaptopKeyboard shortcuts
- Copy the main outputCtrl / ⌘ + Shift + C
- Download the resultCtrl / ⌘ + S
- Share this toolCtrl / ⌘ + Shift + S
- Reset the inputsAlt + R
- Open the tool search paletteCtrl / ⌘ + K
Related tools
SQLite Database Viewer & Query Runner
Dev Utilities
Open a .sqlite/.db file in your browser and run SQL against it.
SQL Formatter
Dev Utilities
Format and indent SQL queries for readability.
SQL Query Analyzer
Dev Utilities
Find expensive SQL patterns, missing filters and index opportunities.
.editorconfig Generator
Dev Utilities
Create an .editorconfig file with per-language overrides.
.htaccess Redirect Generator
Dev Utilities
Generate Apache .htaccess redirect and rewrite rules.
AAB (Android App Bundle) Analyzer
Dev Utilities
Open an .aab file and inspect its manifest, modules, ABIs, densities and size breakdown.
Frequently asked questions
Read more
- A SQL playground that runs in your tab: CSV import, schema explorer and exportable results
Practise SQL, prototype a query or analyse a CSV without installing a database. How SQLite-in-WebAssembly makes a private, zero-setup playground possible.
Version 1.0.0 · Updated 2026-08-11 · Runs entirely in your browser