Can I test SQL online without a database server?

Yes. PeachTools runs SQLite compiled to WebAssembly in your browser. Define a schema, run queries, and see results instantly — no PostgreSQL or MySQL install required.

Is my SQL sent to PeachTools servers?

No. Queries run locally using SQLite compiled to WebAssembly (sql.js) in your browser.

Which SQL dialect is supported?

SQLite syntax. Most standard SELECT, JOIN, GROUP BY, and DDL statements work. This is not PostgreSQL or MySQL.

Does data persist between runs?

Each run creates a new in-memory database from your schema panel. Edit the schema to change seed data.

Can I run INSERT or UPDATE?

Yes. DDL and DML in the schema panel persist for the session of that run. The query panel can mix SELECT with other statements.

Why is my result capped?

Large result sets are capped on the free tier to keep the page responsive. Narrow your query with LIMIT or upgrade to Pro for higher caps.

SQL Playground

Run SQL queries against SQLite in your browser

Run and test SQL online with SQLite in your browser. Create tables, seed data, and execute SELECT queries privately — schema and results never leave your device.

Also known as: sql compiler · sql tester · sql editor online · sqlite playground · test sql online · online sql runner

100% In-Browser & Private — your data never leaves this device

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How to use the SQL Playground

Define your schema in the top panel — CREATE TABLE, INSERT, and other setup statements.
Write SELECT, WITH, or EXPLAIN queries in the Query panel.
Press Run query or Ctrl+Enter to execute against an in-memory SQLite database.
Review tabular results or error messages. Each run starts fresh from your schema.

FAQ

Can I test SQL online without a database server?: Yes. PeachTools runs SQLite compiled to WebAssembly in your browser. Define a schema, run queries, and see results instantly — no PostgreSQL or MySQL install required.
Is my SQL sent to PeachTools servers?: No. Queries run locally using SQLite compiled to WebAssembly (sql.js) in your browser.
Which SQL dialect is supported?: SQLite syntax. Most standard SELECT, JOIN, GROUP BY, and DDL statements work. This is not PostgreSQL or MySQL.
Does data persist between runs?: Each run creates a new in-memory database from your schema panel. Edit the schema to change seed data.
Can I run INSERT or UPDATE?: Yes. DDL and DML in the schema panel persist for the session of that run. The query panel can mix SELECT with other statements.
Why is my result capped?: Large result sets are capped on the free tier to keep the page responsive. Narrow your query with LIMIT or upgrade to Pro for higher caps.