Evaluate this SQL statement:
SELECT ename, sal, 12*sal+100 FROM emp;
The SAL column stores the monthly salary of the employee. Which change must be made to the above syntax
to calculate the annual compensation as “monthly salary plus a monthly bonus of $100, multiplied by 12”?
A.
No change is required to achieve the desired results.
B.
SELECT ename, sal, 12*(sal+100) FROM emp;
C.
SELECT ename, sal, (12*sal)+100 FROM emp;
D.
SELECT ename, sal+100, *12 FROM emp;
Explanation:
to achieve the result you must add 100 to sal before multiply with 12.
Select ename, sal, 12*(sal+100) from EMP;
Incorrect answer:
A:
Multiplication and division has priority over addition and subtraction in Operator precedence.
C:
Give wrong results
D:
Wrong syntax
Refer: Introduction to Oracle9i: SQL, Oracle University Study Guide, 1-11