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SQL Server里查看当前连接的在线用户数
use masterselect loginame,count(0) from sysprocessesgroup by loginameorder by count(0) descselect nt_username,count(0) from sysprocessesgroup by nt_us...
分类:数据库   时间:2015-04-18 11:15:41    阅读次数:229
hdu 1500 Chopsticks DP
题目链接:HDU - 1500In China, people use a pair of chopsticks to get food on the table, but Mr. L is a bit different. He uses a set of three chopsticks -- ...
分类:其他好文   时间:2015-04-18 06:20:41    阅读次数:139
[翻译] SACalendar
SACalendar效果图:IntroducingSACalendar- Easy to use and customizable iOS 7 CalendarSACalendar - 使用非常傻瓜,非常便于定制Only need 3 lines of code to set up. Every v...
分类:其他好文   时间:2015-04-17 22:12:17    阅读次数:175
QtGui.QPixmap
AQtGui.QPixmapis one of the widgets used to work with images. It is optimized for showing images on screen. In our code example, we will use theQtGui....
分类:其他好文   时间:2015-04-17 22:08:22    阅读次数:187
R语言合并data.frame
Merging DataAdding ColumnsTo merge two data frames (datasets) horizontally, use the merge function. In most cases, you join two data frames by one or ...
分类:编程语言   时间:2015-04-17 22:05:43    阅读次数:239
数据库基础
use [0325] --使用0325数据库 create table student --创建表格 ( code int primary key identity(1,1) not null, --列 name varchar(50)not null, --列 se...
分类:数据库   时间:2015-04-17 20:29:26    阅读次数:159
数据库基础课
createdatabases20150417--创建数据库, 数据库的名字不能纯数字createdatabase漩涡鸣人dropdatabase漩涡鸣人--删除数据库use漩涡鸣人--使用数据库go--连接符createtablexuesheng--创建表(codeintnotnull,namev...
分类:数据库   时间:2015-04-17 20:18:35    阅读次数:124
SQL server 学习笔记
select *from student--查询数据库create database s20150417 --新建数据库drop database [20150325] --删除数据库 数字开头的需要用[]括起use s20150417 --使用数据库go --连接符 不写也可以create ta....
分类:数据库   时间:2015-04-17 20:15:41    阅读次数:148
Absolute positioning
The programmer specifies the position and the size of each widget in pixels. When you use absolute positioning, we have to understand the following li...
分类:其他好文   时间:2015-04-17 19:56:23    阅读次数:184
QtGui.QGridLayout
The most universal layout class is the grid layout. This layout divides the space into rows and columns. To create a grid layout, we use theQtGui.QGri...
分类:其他好文   时间:2015-04-17 19:49:04    阅读次数:188
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