display the employee number, name( first name and last name ) and job title for all employees whose salary is more than any salary of those employees whose job title is PU_MAN.
SELECT employee_id ,  first_name ,  last_name ,  job_id FROM employees WHERE salary  >  ( SELECT max(salary) FROM employees WHERE job_id  =  'PU_MAN' )
employee number refers to employee_id; name(first name and last name) refers to concatenation of first_name and last_name; job title refers to job_id; salary more than any salary of those employees whose job title is PU_MAN refers to salary > (SELECT MAX(salary) FROM employees WHERE job_id = 'PU_MAN');