instruction: For those employees whose salary is in the range of 8000 and 12000 and commission is not null or department number does not equal to 40, draw a line chart about the change of department_id over hire_date , and show by the x-axis in desc.
response: SELECT HIRE_DATE, DEPARTMENT_ID FROM employees WHERE SALARY BETWEEN 8000 AND 12000 AND COMMISSION_PCT <> "null" OR DEPARTMENT_ID <> 40 ORDER BY HIRE_DATE DESC