oracle建库与日期格式用法
oracle建库与日期格式用法
安装oracle 实例名orcl,system密码system
/*建库步骤:
1.安装oracle,填写实例名orcl,最后创建实例数据库后结束。
2.系统运行中输入cmd回车打开命令窗口,输入命令 sqlplus ,输入用户名 回车登录,输入命令 start D:ksxt.sql (D:ksxt.sql是本文件的路径)
回车执行。自动结束
命令窗口如下:
C:UsersAdministrator>sqlplus
请输入用户名:
SQL>start D:ksxt.sql
3.修改程序文件 Web.Config 中的ksxt2448为ksxtpwd 。
4.部署成功,测试程序。
*/
--登录,未创建用户之前 用system登录
conn ;
--创建临时表空间
create temporary tablespace ksxt_temp tempfile 'D:oracleproduct10.2.0oradatatestserverksxt_temp01.dbf'
size 32m
autoextend on
next 32m maxsize 2048m
extent management local;
--创建表空间
create tablespace KSXT
logging --有 NOLOGGING 和 LOGGING 两个选项,创建表空间时,创不创建重做日志
datafile 'D:oracleproduct10.2.0oradatatestserverKSXT01.dbf' size 32m --DATAFILE 用于指定数据文件的具体位置和大小.如果有多个文件,可以用逗号隔开,但是每个文件都需要指明大小.必须为绝对地址,不能使用相对地址.
autoextend on
next 32m maxsize 2048m
extent management local --EXTENT MANAGEMENT LOCAL 存储区管理方法,本地管理(LOCAL): 用二进制的方式管理磁盘,有很高的效率,同进能最大限度的使用磁盘. 同时能够自动跟踪记录临近空闲空间的情况,避免进行空闲区的合并操作。
UNIFORM SEGMENT SPACE MANAGEMENT --磁盘扩展管理方法:SEGMENT SPACE MANAGEMENT: 使用该选项时区大小由系统自动确定。由于 Oracle 可确定各区的最佳大小,所以区大小是可变的。UNIFORM SEGMENT SPACE MANAGEMENT:指定区大小,也可使用默认值 (1 MB)。
AUTO -- 段空间的管理方式: AUTO: 只能使用在本地管理的表空间中. 使用LOCAL管理表空间时,数据块中的空闲空间增加或减少后,其新状态都会在位图中反映出来。位图使 Oracle 管理空闲空间的行为更加自动化,并为管理空闲空间提供了更好的性,但对含有LOB字段的表不能自动管理.MANUAL: 目前已不用,主要是为向后兼容.
;
--创建用户并指定表空间
create user ksxt/*username*/ identified by ksxt2448/*password*/
default tablespace KSXT
temporary tablespace ksxt_temp;
--给用户授予权限
grant connect,resource,dba to ksxt;--三个系统权限组 connect 仅连接 resource 开发,应用资源 dba 管理员
--以后以该用户登录,创建的任何数据库对象都属于ksxt_temp 和ksxt表空间,这就不用在每创建一个对象给其指定表空间了。
--使用创建的用户登录
conn ;
--导入数据
--imp file=c:/ksxt.dmp full=y ignore=y; --dmp文件导入
start d:ksxt.sql; --sql文件 语句导入
--创建序列,你首先要有CREATE SEQUENCE或者CREATE ANY SEQUENCE权限,
--示例:
/*
create sequence emp_sequence --sequence name
increment by 1 -- 每次加几个
start with 1 -- 从1开始计数
nomaxvalue -- 不设置最大值
nocycle -- 一直累加,不循环
cach 10; --缓存大小
*/
create sequence KSTMB_SQS
minvalue 1
maxvalue 999999999999999999999999999
start with 2
increment by 1
cache 20;
create sequence STORYDATA_SQS
minvalue 1
maxvalue 999999999999999999999999999
start with 2
increment by 1
cache 20
order;
--创建索引,检查在导出的sql文件中是否含有索引创建语句,切勿重复创建
/*
create index INDEX_KSTMB_1 on KSTMB (SJBM, STLX, STBM)
tablespace KSXT
pctfree 10
initrans 2
maxtrans 255
storage
(
initial 64K
minextents 1
maxextents unlimited
);
create index STORYDATA_INDEX_1 on STORYDATA (STBM, TIMEID)
tablespace KSXT
pctfree 10
initrans 2
maxtrans 255
storage
(
initial 64K
minextents 1
maxextents unlimited
);
*/
其实
oracle日期格式 insert into Ecp_Chat_Message(CHATID,CONTENT,IMGURL,SENDUSERID,SENDTIME,RECEIVEUSERID,STATE,ISREAD)
values(1,'asdfdf','aaaa','kehu4',to_date('2011-12-03 12:55:45.333333','yyyy-mm-dd hh24:mi:ss.ff'),'serviceid',1,0)
报错如下:
日期格式图片在转换整个输入字符串之前结束
插入到秒的可以这样写,
insert into Ecp_Chat_Message(CHATID,CONTENT,IMGURL,SENDUSERID,SENDTIME,RECEIVEUSERID,STATE,ISREAD)
values(1,'asdfdf','aaaa','kehu4',to_date('2011-12-03 12:55:45','yyyy-mm-dd hh24:mi:ss'),'serviceid',1,0)
毫秒级就要用
insert into Ecp_Chat_Message(CHATID,CONTENT,IMGURL,SENDUSERID,SENDTIME,RECEIVEUSERID,STATE,ISREAD)
values(1,'asdfdf','aaaa','kehu4',to_timestamp('2011-12-03 12:55:45.333333','yyyy-mm-dd hh24:mi:ss.ff'),'serviceid',1,0)
这种写法,同时注意数据库字段要改成timestamp类型

Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

Notepad++7.3.1
Easy-to-use and free code editor

SublimeText3 Chinese version
Chinese version, very easy to use

Zend Studio 13.0.1
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 Mac version
God-level code editing software (SublimeText3)

Hot Topics



The message "Your organization has asked you to change your PIN" will appear on the login screen. This happens when the PIN expiration limit is reached on a computer using organization-based account settings, where they have control over personal devices. However, if you set up Windows using a personal account, the error message should ideally not appear. Although this is not always the case. Most users who encounter errors report using their personal accounts. Why does my organization ask me to change my PIN on Windows 11? It's possible that your account is associated with an organization, and your primary approach should be to verify this. Contacting your domain administrator can help! Additionally, misconfigured local policy settings or incorrect registry keys can cause errors. Right now

Windows 11 brings fresh and elegant design to the forefront; the modern interface allows you to personalize and change the finest details, such as window borders. In this guide, we'll discuss step-by-step instructions to help you create an environment that reflects your style in the Windows operating system. How to change window border settings? Press + to open the Settings app. WindowsI go to Personalization and click Color Settings. Color Change Window Borders Settings Window 11" Width="643" Height="500" > Find the Show accent color on title bar and window borders option, and toggle the switch next to it. To display accent colors on the Start menu and taskbar To display the theme color on the Start menu and taskbar, turn on Show theme on the Start menu and taskbar

By default, the title bar color on Windows 11 depends on the dark/light theme you choose. However, you can change it to any color you want. In this guide, we'll discuss step-by-step instructions for three ways to change it and personalize your desktop experience to make it visually appealing. Is it possible to change the title bar color of active and inactive windows? Yes, you can change the title bar color of active windows using the Settings app, or you can change the title bar color of inactive windows using Registry Editor. To learn these steps, go to the next section. How to change title bar color in Windows 11? 1. Using the Settings app press + to open the settings window. WindowsI go to "Personalization" and then

Do you see "A problem occurred" along with the "OOBELANGUAGE" statement on the Windows Installer page? The installation of Windows sometimes stops due to such errors. OOBE means out-of-the-box experience. As the error message indicates, this is an issue related to OOBE language selection. There is nothing to worry about, you can solve this problem with nifty registry editing from the OOBE screen itself. Quick Fix – 1. Click the “Retry” button at the bottom of the OOBE app. This will continue the process without further hiccups. 2. Use the power button to force shut down the system. After the system restarts, OOBE should continue. 3. Disconnect the system from the Internet. Complete all aspects of OOBE in offline mode

Taskbar thumbnails can be fun, but they can also be distracting or annoying. Considering how often you hover over this area, you may have inadvertently closed important windows a few times. Another disadvantage is that it uses more system resources, so if you've been looking for a way to be more resource efficient, we'll show you how to disable it. However, if your hardware specs can handle it and you like the preview, you can enable it. How to enable taskbar thumbnail preview in Windows 11? 1. Using the Settings app tap the key and click Settings. Windows click System and select About. Click Advanced system settings. Navigate to the Advanced tab and select Settings under Performance. Select "Visual Effects"

We all have different preferences when it comes to display scaling on Windows 11. Some people like big icons, some like small icons. However, we all agree that having the right scaling is important. Poor font scaling or over-scaling of images can be a real productivity killer when working, so you need to know how to customize it to get the most out of your system's capabilities. Advantages of Custom Zoom: This is a useful feature for people who have difficulty reading text on the screen. It helps you see more on the screen at one time. You can create custom extension profiles that apply only to certain monitors and applications. Can help improve the performance of low-end hardware. It gives you more control over what's on your screen. How to use Windows 11

Screen brightness is an integral part of using modern computing devices, especially when you look at the screen for long periods of time. It helps you reduce eye strain, improve legibility, and view content easily and efficiently. However, depending on your settings, it can sometimes be difficult to manage brightness, especially on Windows 11 with the new UI changes. If you're having trouble adjusting brightness, here are all the ways to manage brightness on Windows 11. How to Change Brightness on Windows 11 [10 Ways Explained] Single monitor users can use the following methods to adjust brightness on Windows 11. This includes desktop systems using a single monitor as well as laptops. let's start. Method 1: Use the Action Center The Action Center is accessible

The activation process on Windows sometimes takes a sudden turn to display an error message containing this error code 0xc004f069. Although the activation process is online, some older systems running Windows Server may experience this issue. Go through these initial checks, and if they don't help you activate your system, jump to the main solution to resolve the issue. Workaround – close the error message and activation window. Then restart the computer. Retry the Windows activation process from scratch again. Fix 1 – Activate from Terminal Activate Windows Server Edition system from cmd terminal. Stage – 1 Check Windows Server Version You have to check which type of W you are using
