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sql serve 创建序列
Oracle中有sequence的功能,SQL Server类似的功能使用Identity列实现,但是有很大的局限性。在2012中,微软终于增加了sequence 对象,功能和性能都有了很大的提高。sql server 2012 序列配置属性1. 查询序列的下一个值select next value...
分类:数据库   时间:2014-05-08 19:35:44    阅读次数:446
研二下学期做的第一个项目(主要关于datagridview的一些笔记)
首先是行标题列rowheaderdataGridView1.TopLeftHeaderCell.Value = "details";_______________________________________________________有的时候在datagridview中手动添加列的时候,就算...
分类:Windows程序   时间:2014-05-08 19:21:15    阅读次数:390
SqlServer中循环查询结果集
declare @id int,@value nvarchar(100);begin declare c_test_main cursor fast_forward for select hps_hpId,hps_time from hospitalPermSupp where hps_...
分类:数据库   时间:2014-05-08 14:39:27    阅读次数:498
the smallest positive number
2520 is the smallest number that can be divided by each of the numbers from 1 to 10 without any remainder.What is the smallest positive number that is...
分类:其他好文   时间:2014-05-08 14:36:50    阅读次数:248
Constants in C++
The first motivation for constseems to have been to eliminate the use of preprocessor #definefor value substitution. It has since been put to use for ...
分类:编程语言   时间:2014-05-08 13:14:07    阅读次数:496
Solving the Detached Many-to-Many Problem with the Entity Framework
IntroductionThis article is part of the ongoing series I’ve been writing recently, but can be read as a standalone article. I’m going to do a better j...
分类:其他好文   时间:2014-05-08 13:01:13    阅读次数:599
《C++ Primer Plus 第六版》读书笔记
CH1-3:处理数据 1 列表初始化 char c={31325};不允许缩窄 char c={66}; char c={x};不能为变量 2 强制类型转换 (typename) value typename (value) static_cast (value) 更加严格 CH4:复合类型 1 s...
分类:编程语言   时间:2014-05-08 11:56:13    阅读次数:377
10 001st prime number
这真是一个耗CPU的运算,怪不得现在因式分解和素数查找现在都用于加密运算。By listing the first six prime numbers: 2, 3, 5, 7, 11, and 13, we can see that the 6th prime is 13.What is the 1...
分类:其他好文   时间:2014-05-08 11:54:49    阅读次数:260
Hadoop-5、排序(Combiner泛谈)
一、Combiner作用1、combiner最基本是实现本地key的聚合,对map输出的key排序,value进行迭代。如下所示:map: (K1, V1) → list(K2, V2)combine: (K2, list(V2)) → list(K2, V2)reduce: (K2, list(V...
分类:其他好文   时间:2014-05-08 09:37:49    阅读次数:472
java.lang.Integer can not be cast to java.lang.Long
java.lang.Integer can not be cast to java.lang.Long...
分类:编程语言   时间:2014-05-07 22:41:30    阅读次数:329
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