【ocp-12c】最新Oracle OCP-071考试题库(47题)
47、(10-6)choose two
You need to calculate the number of days from 1st January 2007 till date.
Dates are stored in the default format of dd-mon-rr.
Which two SQL statements would give the required output?
A) SELECT TO_DATE (SYSDATE, 'DD/MONTH/YYYY') - '01/JANUARY/2007' FROM DUAL;
B) SELECT SYSDATE - TO_DATE ('01/JANUARY/2007') FROM DUAL;
C) SELECT SYSDATE -'01-JAN-2007' FROM DUAL;
D) SELECT SYSDATE - TO_DATE ('01-JANUARY-2007') FROM DUAL;
E) SELECT TO_CHAR (SYSDATE, 'DD-MOM-YYYY') - '01-JAN-2007' FROM DUAL;
Answer:BD
(解析:对数据进行混合运算时必须要用转换函数转换为日期格式,因为它不会隐式转换,但是我们在insert
数据时,会实现隐式转换。
SQL> SELECT SYSDATE - TO_DATE ('01-1 月-2007') FROM DUAL;
或者:
SQL> SELECT SYSDATE - TO_DATE ('01/1 月/2007') FROM DUAL;
)
【ocp-12c】最新Oracle OCP-071考试题库(47题)的更多相关文章
- 【OCP题库-12c】最新CUUG OCP 071考试题库(72题)
72.View the exhibit for the structure of the STUDENTand FACULTYtables. STUDENT Name Null? Type ----- ...
- 【OCP题库-12c】最新CUUG OCP 071考试题库(71题)
71.(32-18) choose three Which three statements indicate the end of a transaction? (Choose three.) A) ...
- 【OCP题库-12c】最新CUUG OCP 071考试题库(70题)
70.(31-2)choose the best answer: View the Exhibit and examine the structure of the Book table. The B ...
- 【OCP题库-12c】最新CUUG OCP 071考试题库(69题)
69.(31-1)choose the best answer: Evaluate the following query: SELECT INTERVAL '300' MONTH, INTERVAL ...
- 【OCP题库】最新CUUG OCP 12c 071考试题库(68题)
68.(29-13)choose two: Which two statements are true? (Choose two.) A) DICTIONARY is a view that cont ...
- 【OCP题库】最新CUUG OCP 12c 071考试题库(67题)
67.(25-8)choose the best answer: View the Exhibit and examine the structure of CUSTOMERS table. Eval ...
- 【OCP题库】最新CUUG OCP 12c 071考试题库(66题)
66.(22-19)choose two Examine the structure proposed for the TRANSACTIONS table: Which two statements ...
- 【OCP题库】最新CUUG OCP 12c 071考试题库(65题)
65.(22-16) choose the best answer: The CUSTOMERS table has the following structure: You need to writ ...
- OCP 12c最新考试题库及答案(071-2)
2019-02-12 16:23:54 2.(4-7) choose the best answer:You need to display the first names of all cust ...
- 【OCP-12c】2019年CUUG OCP 071考试题库(80题)
80.View the exhibit and examine the structure in ORDERS and ORDER_ITEMS tables. You need to create a ...
随机推荐
- 使用openal与mpg123播放MP3,附带工程文件(转)
使用openal与mpg123播放MP3,附带工程文件 使用openal和mpg123播放MP3文件 使用静态编译,相关文件都在附件里 相关工程文件:openal_mpg123_player.7z 使 ...
- Git 仓库 SSH、HTTP、Gitweb (Nginx) 乱炖
简介: 自己搭建 Git 仓库,实现 SSH 协议.配合 Nginx 实现 HTTP 协议拉取.推送代码. 利用 Nginx 实现 Gitweb 在线浏览代码,使用 Gitweb-theme 更新默认 ...
- python之private variables
[python之private variables] “Private” instance variables that cannot be accessed except from inside a ...
- grep 过滤.svn文件
[grep 过滤.svn文件] 问题: 在repository搜索代码时,常常会搜索到.svn的代码,如果不想搜索.svn目录下的相关代码怎么办? 1.使用管道进行双层“过滤”,其中第二次gre ...
- php多进程pcntl学习(二)
多进程中数据独立,变量无法共享,所以可以使用shmop共享内存实现(cli模式不支持APC扩展),或者存储到redis这种nosql中. 下面实例,开10个进程结合redis集合,做一些简单的任务处理 ...
- MVC架构思想
- [Selenium] 怎样判断是否适合自动化测试
实施自动化测试前需要对软件开发过程进行分析,以观察其是否适合使用自动化测试.通常需要满足以下条件: 1)需求变动不频繁 2)项目周期足够长 3)自动化测试脚本可重复使用 4)手工测试无法完成或者需要大 ...
- 2016年,你读过的最好的IT技术书有哪几本?
def 程序员 原文 https://www.zhihu.com/question/54350343 陈硕 等 54 人赞同了该回答 1 知乎 陈硕大牛的 服务器多线程编程muduo 输的好不好可能更 ...
- DataStage 错误集(持续更新)
DataStage 错误集(持续更新) DataStage序列文章 DataStage 一.安装 DataStage 二.InfoSphere Information Server进程的启动和停止 D ...
- UIPickerView 修改必须滚动才修改值的bug
//相应的选择转动 - (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSI ...