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【071题库】最新OCP-071考试题库解析-第21题

【071题库】最新OCP-071考试题库解析-第21题

071考试是OCP考试科目的一种,由于071考题多变,我们专门收集整理了最新的考试题库,并对这些考题进行讲解,希望可以帮助广大考生。

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071题库-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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