当前位置: Oracle DBA培训网-优技培训 >> 071题库 >

【071题库】最新OCP-071考试题库解析-第6题

【071题库】最新OCP-071考试题库解析-第6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。

)

技术沙龙MORE+

Oracle技术沙龙:【数据保护顶尖技术-MAA】首次全国首播12c MAA技术 云数据库加上MAA技术组成最豪华的技...
Oracle技术沙龙第49期:【Oracle 数据库云技术分享】Oracle技术沙龙第49期:【Oracle 数据库云技术分享】本次技术沙...
Oracle技术沙龙第48期:【Oracle 12c RAC安装】小编:今天讲什么内容呢?以后有什么用呢? 大师:今天讲的是12c...
我要参加技术沙龙

关闭