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【第52题】OCP认证1Z0-071最新考试题库及答案

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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52题、choose the best answer:

Examine the structure and data in the PRICE_LIST table:

You plan to give a discount of 25% on the product price and need to display the discount amount

in the same format as the PROD_PRICE.

Which SQL statement would give the required result?

A) SELECT TO_CHAR (TO_NUMBER (prod_price)*.25, '$99,999.00')

FROM PRICE_LIST;

B) SELECT TO_CHAR(prod_price*.25, '$99,999.99')

FROM PRICE_LIST;

C) SELECT TO_CHAR(TO_NUMBER(prod_price,'$99,999.99')*.25,'$99,999.00')

FROM PRICE LIST;

D) SELECT TO_NUMBER (TO_NUMBER(prod_price, '$99,999.99')*.25, '$99,999.00')

FROM PRICE_LIST;

Answer:A

(解析:其实 B 答案也可以实现要求,但是它不是最好的,这里需要 to_number 转换函数,因为 prod_price 本身是 varchar2 类型,可以用如下语句实验:

SELECT TO_CHAR(to_number(sal)*.25, '$99,999.99')

FROM emp;

)

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