The result of the function is a large integer. If the argument can be null, the result can be null; if the argument is null, the result is the null value.
Using the EMPLOYEE table, select a list containing salary (SALARY) divided
by education level (EDLEVEL). Truncate any decimal in the calculation. The
list should also contain the values used in the calculation and employee number
(EMPNO). The list should be in descending order of the calculated value: