Context: CREATE TABLE employees (employee_id VARCHAR, first_name VARCHAR, last_name VARCHAR, department_id VARCHAR)
Question: display the employee number and name( first name and last name ) for all employees who work in a department with any employee whose name contains a ’T’.
Answer: SELECT employee_id, first_name, last_name FROM employees WHERE department_id IN (SELECT department_id FROM employees WHERE first_name LIKE '%T%')