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oracle 与sql serve 获取随机行数的数据
Oracle 随机获取N条数据 当我们获取数据时,可能会有这样的需求,即每次从表中获取数据时,是随机获取一定的记录,而不是每次都获取一样的数据,这时我们可以采取Oracle内部一些函数,来达到这样的目的1) select * from (select * from tablename order b...
分类:数据库   时间:2014-07-22 23:16:15    阅读次数:434
什么时候需要交换Top Level ?
什么时候需要交换Top Level
分类:其他好文   时间:2014-07-22 23:11:35    阅读次数:347
iOS 视频开发
MediaPlayer framework播放电影文件:iOS sdk中可以使用MPMoviePlayerController来播放电影文件。但是在iOS设备上播放电影文件有严格的格式要求,只能播放下面两个格式的电影文件。? H.264 (Baseline Profile Level 3.0)? M...
分类:移动开发   时间:2014-05-01 13:55:15    阅读次数:424
CRM 2011: 报价(Quote Detail)到订单(Order Detail)的Mapping
CRM 2011: 报价(Quote Detail)到订单(Order Detail)的Mapping(MSCRM 2011 Mapping QuoteProduct to OrderProduct)由于QuoteProduct 到 OrderProduct 的mapping是隐藏的,我们在solu...
分类:移动开发   时间:2014-05-01 13:45:37    阅读次数:436
Gold mining in South Africa
A quarry operator in the Libyan needed to expand their crushing and screening plant in order to cope with an increase in chip and sand demand from the...
分类:其他好文   时间:2014-04-30 20:26:27    阅读次数:646
LeetCode4:Add Two Numbers
题目: You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a sin...
分类:其他好文   时间:2014-04-30 18:44:23    阅读次数:428
Development of large-scale site performance optimization method from LiveJournal background
A LiveJournal course of developmentis a project in the 99 years began in the campus, a few people do as a hobby such an application, in order to achie...
分类:其他好文   时间:2014-04-29 19:38:16    阅读次数:589
【leetcode刷题笔记】Spiral Matrix
Given a matrix ofmxnelements (mrows,ncolumns), return all elements of the matrix in spiral order.For example,Given the following matrix:[ [ 1, 2, 3 ],...
分类:其他好文   时间:2014-04-29 10:37:46    阅读次数:434
LeetCode——Add Two Numbers
You are given two linked lists representing two non-negative numbers. The digits are stored in reverse order and each of their nodes contain a single ...
分类:其他好文   时间:2014-04-29 10:17:46    阅读次数:406
宏函数定义继承类
//: ORDER.CPP -- Order of constructor calls // with inheritance#include #define inherit(derived, base) \class derived : public base { \public: \ deri....
分类:其他好文   时间:2014-04-28 00:09:24    阅读次数:444
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