Joining Tables in Oracle

 Joining Tables in Oracle

One of the powerful features of relational databases is the ability to join multiple tables together based on a common column. Here is an example:

SELECT e.first_name, e.last_name, d.department_name

FROM employees e

JOIN departments d ON e.department_id = d.department_id;

This joins the "employees" and "departments" tables on the "department_id" column and selects the "first_name", "last_name", and "department_name" columns.