What are the employee ids and job ids for employees who make less than the lowest earning employee with title MK_MAN?
SELECT employee_id ,  job_id FROM employees WHERE salary  <  ( SELECT min(salary) FROM employees WHERE job_id  =  'MK_MAN' )
employees who make less than = salary <; lowest earning employee with title MK_MAN refers to min(salary) WHERE job_id = 'MK_MAN';