大数据就业实战培训 Oracle就业实战培训

CUUG,以就业为导向,让学员学到真正实用的技术

当前位置: CUUG培训-优技培训 >> 071考试 >

【071考试】最新OCP认证071考试题库整理-第6题

【071考试】最新OCP认证071考试题库整理-第6题

来源:CUUG培训-优技培训    更新时间:2019/5/20 13:15:38    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

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

071考试-第6题、choose the best answer

In the EMPLOYEES table there are 1000 rows and employees are working in the company for more than 10 years.

Evaluate the following SQL statement:

SQL> UPDATE employees

SET salary = NVL(salary,0) + NVL(comm,0),comm = NVL(comm,0)

WHERE hire_date < SYSDATE - 600;

What would be the result?

A) It gives an error because NVL function cannot be used with UPDATE.

B) It gives an error because multiple NVL functions are used in an expression.

C) It executes successfully and updates the records of those employees who have been working in the company for more than 600 days.

D) It executes successfully but no rows updated.

Answer:C

(SQL> update emp

2 set sal=nvl(sal,0)+nvl(comm,0),comm=nvl(comm,0)

3 where hiredate < sysdate - 100;

已更新 14 行。

)

071考试
大数据课程
WDP
oracle机构
oracle认证
oracle课程
oracle视频
CUUG就业实战培训
CUUG与ORACLE公司建立最核心、最权威、最深层次的战略合作伙伴关系;
CUUG是唯一一家只做DBA就业培训和oracle认证的授权机构,28年培养数万名oracle技术人才;
CUUG金牌讲师授课,来自一线的资深ORACLE OCM技术专家团队;
CUUG顶尖完善的学习体系,以甲骨文原厂ORACLE数据库核心技术为教学课程;

报名入口 点击进入

课程咨询:400-0909-964

考试咨询:400-0909-964

企业QQ:800060152

E-mail:cuug_bj@cuug.com