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About This Tool
Practice SQL queries, test database schemas, and analyze data directly in your browser. Powered by SQLite 3 WebAssembly (WASM), this in-browser database sandbox requires no database server, credentials, or installation.
Included Datasets: ā¢ Employees & Departments: Practice INNER/LEFT JOINs, department salary aggregations, and personnel reporting. ā¢ Products & Orders: Test e-commerce revenue analytics, inventory grouping, and high-value customer order filters.
Key Capabilities: ā¢ Genuine SQLite 3 Engine: Full SQL-92 support including subqueries, CTEs (WITH clauses), Window functions, and transactions. ā¢ Tabular Query Results: Clean data table with row counts, execution duration in milliseconds, and column types. ā¢ One-Click CSV Export: Export query result sets directly into CSV files for spreadsheet analysis. ā¢ 100% Client-Side Privacy: The database runs entirely in memory inside your browser. No queries or data are sent to any external server.
How to Use
- 1
Choose a sample query from the query templates or write your own custom SQL statement.
- 2
Click Run Query or press Ctrl+Enter to execute.
- 3
Inspect the tabular results, execution time, and row count.
- 4
Click Export CSV to download your result set or explore table schemas on the left.
Frequently Asked Questions
What SQL database engine powers this playground?
It uses SQLite 3 compiled to WebAssembly (sql.js), providing the exact same SQL engine trusted in billions of applications.
Can I create my own tables and insert data?
Yes! You can run standard DDL and DML commands like CREATE TABLE, INSERT INTO, UPDATE, and DROP TABLE.
Are my queries sent to a backend server?
Never. The SQLite database lives exclusively in your browser memory. Nothing is ever transmitted over the network.