其实other的下拉选择框是一个ComboBox,你可以直接在里面手工输入!
eclipse中如何增加编码
其实other的下拉选择框是一个ComboBox,你可以直接在里面手工输入!
http://www.cnblogs.com/cheney23reg/archive/2010/08/19/1803474.html
这几天看到了几个不错的Android 上的应用,心痒痒,也想探索一下Android 的世界,于是决心学习一下Android 的开发技术。 :)
接下来当然是搭建Android 的开发环境啦,步骤如下:
1. 安装JDK。注意这里只是安装JRE是不行的,需要安装JDK
笔者是去 http://www.oracle.com/technetwork/java/javase/downloads/index.html 下载了 JDK 6 Update 20。
注: 根据www.eclipse.org的官方信息,在windows 平台上安装了JDK 6 Update 21,然后运行Eclipse Helios (3.6) 会出现 crashing,需要进行一些设置 ( http://wiki.eclipse.org/FAQ_How_do_I_run_Eclipse%3F#Oracle.2FSun_VM_1.6.0_21_on_Windows )
Windows 7:
1) 双击 jdk-6u20-windows-i586.exe …
http://hi.baidu.com/cive/blog/item/bd4e8e82a714d0b26c81198d.html
重新安装了sql server 2008,发现sa账户无法登录,错误是233。
网上找了很多帖子,
设置了“SQL Server和Windows身份验证模式”,
也设置了sa“启用”,
也重启了N次,
都不行,
偶然看到一个办法,一试就好了。
如下:
用Windows身份验证登录,执行SQL命令:
ALTER LOGIN sa WITH PASSWORD=’新密码’,
搞定,现在终于可以用sa登录SQL管理器了。
In Microsoft Windows: In Microsoft Windows, you can use the command ipconfig /flushdns to flush the DNS resolver cache.
– Start -> Run -> type cmd – In command prompt, type C:>ipconfig /flushdns
In Mac OSX: In Mac OSX, you …
Recursive relationships: relationships exist between entity instances of the same type.
One-to-one: If we were to track which employees were married to other employees, we would expect each to be married to either zero or one other employee at any …
如班级和教师的关系由三张表来表示:班级表,教师 及 班级教师表
In particular, the logical model does not contain any many-to-many relationships. There is a simple rationale for this difference – relational databases do not directly support many-to-many relationships, so they must be transformed using an intersection entity.…
select count(*) FROM [AdventureWorks].[Person].[Contact]
返回表中所有的记录的个数
select COUNT(MiddleName) from [AdventureWorks].[Person].[Contact]
返回字段中,值非空的记录的个数(重复的也算进去的)
select COUNT(distinct MiddleName) from [AdventureWorks].[Person].[Contact]
返回字段中不重复且非空的记录的个数
Result:
19972
11473
70…
1.Android 四大天王:Activity(程序的界面),Intent(数据传输),Service(服务),Content Provider(数据存放)
2.产生APK安装包:Android Manifest里的Export
3.Activity的生命周期:onCreate->onStart->onResume->onPause->Other Activity’s onCreate,onStart,onResume-> onStop()(完全不可见后,才会调用,如第二个ACtivity是Dialog,则不发生),再按Back后,Other Activity’s onPause ->First Activity’s onStart->onResume, Other Activity’s onStop() , onDestroy()(再起来时一定要再有onCreate)
4. A task is a stack of Activities.…
1. 机器名和用户名相同不能正确安装Sqlserver 2008R2!
2. .Net4.0要安装Extended
3. Windows firewall 要开放80口(IIS中设置的)
4.Cystal Report客户端要重新安装
5.目录要被IIS_User?NetWork Service共享(Full Control)…
It is not easy to change SQL Server 2008/2005 object schema (tables, stored procedures and views) to “dbo”. Here is a solution.