码迷,mamicode.com
首页 >  
搜索关键字:union all    ( 25526个结果
Oracle ORA-01034,ORA-27101,ORA-00600
本机IP地址:192.168.1.163 [oracle@rtest ~]$ sqlplus /nolog SQL*Plus: Release 10.2.0.2.0 - Production on Sun May 4 19:32:13 2014 Copyright (c) 1982, 2005, Oracle.  All Rights Reserved. @...
分类:数据库   时间:2014-05-10 10:34:04    阅读次数:392
hadoop测试
lk@lk-virtual-machine:~$ cd hadoop-1.0.1 lk@lk-virtual-machine:~/hadoop-1.0.1$ cd bin lk@lk-virtual-machine:~/hadoop-1.0.1/bin$ ./stop_all.sh bash: ./stop_all.sh: 没有那个文件或目录 lk@lk-virtual-machine:~...
分类:其他好文   时间:2014-05-10 09:58:55    阅读次数:462
ZOJ 1203 Swordfish (经典MST ~ Kruscal)Boruvka算法
链接:http://acm.zju.edu.cn/onlinejudge/showProblem.do?problemId=203 Description:  We all remember that in the movie Swordfish, Gabriel broke into the World Bank Investors Group in West Los Angeles, to...
分类:其他好文   时间:2014-05-10 09:11:52    阅读次数:343
codechef Three Way Communications 题解
The Chef likes to stay in touch with his staff. So, the Chef, the head server, and the sous-chef all carry two-way transceivers so they can stay in constant contact. Of course, these transceivers have...
分类:其他好文   时间:2014-05-10 09:11:21    阅读次数:334
浅谈C语言中的联合体
联合体union 当多个数据需要共享内存或者多个数据每次只取其一时,可以利用联合体(union)。在C Programming Language 一书中对于联合体是这么描述的: 1)联合体是一个结构; 2)它的所有成员相对于基地址的偏移量都为0; 3)此结构空间要大到足够容纳最"宽"的成员;4)其对...
分类:编程语言   时间:2014-05-09 11:25:55    阅读次数:409
CodeToHTML 打印条码生成
//=====================================================================================// All Rights Reserved , Copyright ? Learun 2013//=============...
分类:Web程序   时间:2014-05-08 20:49:28    阅读次数:506
多线程二(GCD)代码笔记
//// TWFXViewController.h// Demo_GCD//// Created by Lion User on 12-12-11.// Copyright (c) 2012年 Lion User. All rights reserved.//#import @interfa...
分类:编程语言   时间:2014-05-08 20:09:53    阅读次数:482
POJ-1042 Gone Fishing (贪心法求最佳钓鱼方案
John is going on a fishing trip. He has h hours available (1 <= h <= 16), and there are n lakes in the area (2 <= n <= 25) all reachable along a single, one-way road. John starts at lake 1, but he can finish at any lake he wants. He can only travel from on...
分类:其他好文   时间:2014-05-07 08:48:52    阅读次数:515
zoj 3781 Paint the Grid Reloaded (比较隐含的最短路)
Paint the Grid Reloaded Time Limit: 2 Seconds      Memory Limit: 65536 KB Leo has a grid with N rows and M columns. All cells are painted with either black or white initially. Two cells A ...
分类:其他好文   时间:2014-05-07 07:28:35    阅读次数:480
SQL Union和SQL Union All用法
SQL Union和SQL Union All用法SQL Union和SQL Union All用法SQL UNION 操作符UNION 操作符用于合并两个或多个 SELECT 语句的结果集。请注意,UNION 内部的 SELECT 语句必须拥有相同数量的列。列也必须拥有相似的数据类型。同时,每条 ...
分类:数据库   时间:2014-05-06 12:22:36    阅读次数:340
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!