【071题库】最新OCP-071考试题库解析-第52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。
每周五晚8点，我们有免费的OCP解析公开课，地址：https://ke.qq.com/course/326223 OCP题库交流群：1015267481，验证ocp
-------------------------------------------------------
071题库-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, '$99,999.99')
FROM emp;
)
-
标签错误:<!-- #Label#
labelId=20160707140604
moduleId=1
classId=12231768634
orderby=2
fields=url,title,u_info
attribute=
datatypeId=22192428132
recordCount=3
pageSize=
<htmlTemplate><dt><img src="/images/index_26${index}.jpg" width="100" height="62" /><a href="$url" title="${title}">${title}</a><span>${api.left(u_info,60)}</span></dt></htmlTemplate>
-->
- 我要参加技术沙龙
