SQL Playground (SQLite WASM): What It Does
Runs SQLite queries in an in-memory database compiled to WebAssembly. It supports table creation, CSV imports, complex JOINs, query execution plan inspection (EXPLAIN), and exporting results.
Example
CREATE TABLE users (id INT, name TEXT); INSERT INTO users VALUES (1, 'Mango'); SELECT * FROM users;[{ id: 1, name: 'Mango' }]Executes SQLite SQL statements against an in-memory WebAssembly database.
How to Use
- Write or paste SQL statements into the query editor.
- Click Run Query to execute statements against the virtual SQLite database.
- Import CSV files as new tables or export query results as JSON or CSV.
Limitations
- Queries execute in volatile browser memory; reload will reset the database.
- Network-specific database extensions and foreign server connections are unavailable.
Frequently Asked Questions
Which SQL dialect does this playground implement?
It runs standard SQLite 3 compiled to WebAssembly, supporting common features like CTEs, window functions, and JSON operators.
Can I persist tables across browser sessions?
You can download the current SQLite database file to your disk and re-upload it whenever you return.
Related Tools
Interactive web sandbox to write, preview, and test HTML5, CSS3, and JavaScript in an isolated browser environment.
Real-time split-screen Markdown editor with GitHub Flavored Markdown, live HTML rendering, and instant export.
Parse CSV and TSV spreadsheets into structured JSON arrays with automatic delimiter detection.
Format, beautify, validate, and inspect JSON payloads with line-accurate error highlighting.