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【071考试】最新OCP认证071考试题库整理-第17题

【071考试】最新OCP认证071考试题库整理-第17题

来源:CUUG培训-优技培训    更新时间:2019/5/21 9:50:50    阅读次数:

071考试题库之前是比较稳定的,但随着Oracle的调整,071考试不断的增加新的考题,增加了考试的难度,所以我们专门收集整理了这些考试,并对这些考题进行解析,希望可以对考生有帮助。

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

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071考试-第17题、choose the best answer

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

Evaluate the following SQL statement:

SELECT first_name, employee_id, NEXT_DAY(ADD_MONTHS(hire_date,6),1) "Review" FROM employees;

The query was written to retrieve the FIRST_NAME, EMPLOYEE_ID, and review date for employees. The review date is the first Monday after the completion of six months

of the hiring.

The NLS_TERRITORY parameter is set to AMERICA in the session.

Which statement is true regarding this query?

A) The query would not execute because the NEXT_DAY function accepts a string as argument.

B) The query would execute to give the desired output.

C) The query would not execute because date functions cannot be nested.

D) The query would execute but the output would give review dates that are Sundays.

Answer:D

(解析:题目的意思是显示某个时间以后第一个周一的日期,但是西方人的第一天是星期天,

所以应该修改为 NEXT_DAY(ADD_MONTHS(hire_date,6),2)

步骤:

SQL> alter session set NLS_TERRITORY=america;

SQL> select next_day(sysdate,2) from dual;

NEXT_DAY(SYSDA

--------------

03-12 月-18 #这一天是周日

SQL> select next_day(sysdate,1) from dual;

NEXT_DAY(SYSDA

--------------

02-12 月-18 #这一天是周一

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