【单选题】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 co...
A.
No change is required to achieve the desired results.
【简答题】以下说法错误的是( ) A.SELECT max(sal),deptno,job FROM EMP group by sal; B.SELECT max(sal),deptno,job FROM EMP group by deptno; C.SELECT max(sal),deptno,job FROM EMP; D.SELECT max(sal),deptno,job FROM EMP grou...