【12c OCP】最新OCP 12c題庫考試原題（071-45題）
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45、(9-16)choose the best answer:
View the Exhibit and examine the data in the EMPLOYEES table.
You want to generate a report showing the total compensation paid to each employee to date(迄今為止支付給每位員工的總補償).
You issue the following query:
SQL>SELECT ename ||' joined on '|| hiredate ||
', the total compensation paid is '||
TO_CHAR(ROUND(ROUND(SYSDATE-hiredate)/365) * sal + comm)
"COMPENSATION UNTIL DATE"
FROM employees;
What is the outcome?
A) It executes successfully and gives the correct output.
B) It generates an error because the usage of the ROUND function in the expression is not valid.
C) It generates an error because the concatenation operator can be used to combine only two items.
D) It generates an error because the alias is not valid.
E) It executes successfully but does not give the correct output.
Answer：E
(解析：因為 comm 列上有空值，所以會導致某些計算的結果為空)
