devtools
Local inputs
Interactive SQL Simulator
Builds a SELECT, JOIN, or DDL statement against a small sample database and shows the rows that statement returns.
Processed in this tab
Browser-Based Simulation
This page runs a small sample database in JavaScript. The statements are not sent to a server. Data is strictly local, temporary, and resets on page reload. It validates basic types (INT, DECIMAL) and simple constraints to help you learn SQL safely.
Query Builder
* (All)
id
name
email
age
role
No conditions. Fetching all rows.
SQL Preview
Run a query to see results...
SQL Interactive Guide
A step-by-step tutorial for mastering SQL operations