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【第45题】OCP认证1Z0-071最新考试题库及答案

来源：优技培训时间：

071考试不仅是OCP11g的考试科目，同时也是OCP 12c的考试科目，所以关心071考题的同学有很多，对此我们专门收集整理了近期071考试的原题，并对这些考题进行讲解，希望帮助广大考生顺利通过071考试。

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071考题解析-第45题、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(迄今为止支付给每位员工的总补偿).

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：因为 comm 列上有空值，所以会导致某些计算的结果为空)

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