【第21题】OCP认证1Z0-071最新考试题库及答案

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21题、choose the best answer

View the Exhibit and examine the description of the EMPLOYEES table.

You want to calculate the total remuneration for each employee. Total remuneration is the sum of the annual salary and the percentage commission earned for a year.

Only a few employees earn commission.

Which SQL statement would you execute to get the desired output?

A) SELECT first_name, salary, salary*12 + NVL(salary, 0)*commission_pct "Total"

FROM EMPLOYEES;

B) SELECT first_name, salary, salary*12+(salary*NVL2(commission_pct,

salary,salary+commission_pct)) "Total"

FROM EMPLOYEES;

C) SELECT first_name, salary, (salary + NVL(commission_pct,0)*salary)*12 "Total"

FROM EMPLOYEES;

D) SELECT first_name, salary, salary*12+salary*commission_pct "Total"

FROM EMPLOYEES;

Answer：A

(解析：题眼是“Only a few employees earn commission”，说明有人的佣金是 null，所

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