Practice
SQL Playground
A real PostgreSQL database running in your browser. Write a query and press Run — nothing to install, no account needed.
SELECT * FROM employees;
Sample dataset
employees
50 employees across 5 departments, with a manager hierarchy.
id, name, department, salary, hire_date, manager_id
products
20 products across 4 categories.
id, name, category, price, stock
orders
200 orders linking employees to products.
id, employee_id, product_id, quantity, order_date, status