Sql Programming Tutorials, Guides & Best Practices

SELECT name FROM employees_us
UNION ALL
SELECT name FROM employees_uk;

Window functions calculate values across a set of rows related to the current row without collapsing rows into groups.

SELECT employees.name, departments.department_name
FROM employees
FULL JOIN departments
ON employees.department_id = departments.department_id;

The CROSS JOIN returns the Cartesian product of both tables.