Use the SQL editor online to practice SELECT queries, create small SQLite tables, test joins, and inspect results without a database server. Code runs locally in a browser WebAssembly worker.
CREATE TABLE users (id INTEGER, name TEXT); INSERT INTO users VALUES (1, 'Aman'); SELECT * FROM users;
id | name ---+----- 1 | Aman === Code Execution Successful ===
Queries run in a dedicated Worker against a fresh in-memory SQLite database for each run. It is designed for focused snippets and learning tasks where a fast browser workspace is more useful than a full local project.
Start with the built-in project, replace its sample with one of these focused examples, and compare your result with the expected output.
Create a tiny dataset and practice an aggregate query.
CREATE TABLE visits (page TEXT);
INSERT INTO visits VALUES ('home'), ('tools'), ('tools');
SELECT page, COUNT(*) AS visits FROM visits GROUP BY page;Expected: home | 1 tools | 2
Try in editorUse WHERE and ORDER BY with an in-memory table.
CREATE TABLE scores (name TEXT, score INTEGER);
INSERT INTO scores VALUES ('A', 82), ('B', 95);
SELECT * FROM scores WHERE score >= 90 ORDER BY score DESC;Expected: B | 95
Try in editorYes. ToolerWork runs SQLite-style SQL inside a browser WebAssembly worker.
No. It creates a temporary local in-memory SQLite database for each run.
Yes. SELECT results are shown as readable tables in the output panel.
No. SQL execution runs locally in your browser session.
Queries run in a dedicated Worker against a fresh in-memory SQLite database for each run. The workspace also keeps the active project in local browser storage.
The database is temporary and starts fresh on every run. MySQL, PostgreSQL, stored procedures, remote connections, and database-specific extensions are not supported.