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ON DUPLICATE KEY UPDATE用法
INSERT INTO `books `(`name`,`count`,`num`)VALUES ('windows','1','2'),('','linux','1','3')ON DUPLICATE KEY UPDATE `count` = `count` + VALUES(`COUNT`), ...
分类:其他好文   时间:2014-10-29 01:50:13    阅读次数:143
Android笔记-Dalvik VM-1
Dalvik Virtual Machine (good on limited hardware)Duplicate data used in class files is included only once in the .dex output, which saves space and us...
分类:移动开发   时间:2014-10-27 17:06:39    阅读次数:218
leetcode Subsets
题目: Given a set of distinct integers, S, return all possible subsets. Note: Elements in a subset must be in non-descending order.The solution set must not contain duplicate subsets....
分类:其他好文   时间:2014-10-24 22:17:14    阅读次数:198
[LeetCode] Find Minimum in Rotated Sorted Array
Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2). Find the minimum element. You may assume no duplicate exists in...
分类:其他好文   时间:2014-10-24 13:06:25    阅读次数:224
AIX6.1/11.2.0.3数据库上关于SWAP的一个BUG
昨天去南京某客户那里调优新上线的业务数据库,在查看alert.log日志时发现在过去的一段时间里,每过几个小时或间隔一段时间,就会报类似以下的内容: Thu Aug 21 09:01:26 2014 WARNING: Heavy swapping observed on system in last 5 mins. pct of memory swapped in [8.42...
分类:数据库   时间:2014-10-22 18:20:18    阅读次数:494
LeetCode 153 Find Minimum in Rotated Sorted Array
Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2). Find the minimum element. You may assume no duplicate exists in the ar...
分类:其他好文   时间:2014-10-22 12:57:45    阅读次数:120
Remove duplicate in single linkedlist
1/* 1.Node.java*/ 2 package Chapter2; 3 4 public class Node { //T可以是int,string等 5 public T data; 6 public Node next; 7 public Node(T d, Nod...
分类:其他好文   时间:2014-10-20 21:21:04    阅读次数:240
【LeetCode】Find Minimum in Rotated Sorted Array 解题报告
【题目】 Suppose a sorted array is rotated at some pivot unknown to you beforehand. (i.e., 0 1 2 4 5 6 7 might become 4 5 6 7 0 1 2). Find the minimum element. You may assume no duplicate...
分类:其他好文   时间:2014-10-20 11:51:28    阅读次数:239
转载:C#保存文件时重名自动生成新文件的方法
/// /// Generates a new path for duplicate filenames./// /// The path./// private string GetNewPathForDupes( string path ){ string directory = Path...
分类:Windows程序   时间:2014-10-17 03:32:03    阅读次数:237
使用RMAN工具复制数据库
一.概述复制数据库即使用RMAN工具的DUPLICATE命令从源数据库拷贝所有或者一部分的数据到目标数据库。复制数据库技术在多种场景都是特别有用的,如创建standby数据库,创建用于不同目的地测试环境,数据库迁移等。使用DUPLICATE命令复制数据库能自动配置与源数据库不同的DBID,..
分类:数据库   时间:2014-10-15 21:08:42    阅读次数:369
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