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Mysql explain分析SQL语句之字段属性说明
在 explain的帮助下,您就知道什么时候该给表添加索引,以使用索引来查找记录从而让select 运行更快。如果由于不恰当使用索引而引起一些问题的话,可以运行 analyze table来更新该表的统计信息,例如键的基数,它能帮您在优化方面做出更好的选择。explain 返回了一行记录,它包括了 ...
分类:数据库   时间:2014-08-05 15:27:29    阅读次数:354
POJ 2299 离散化线段树
点击打开链接 Ultra-QuickSort Time Limit: 7000MS   Memory Limit: 65536K Total Submissions: 40827   Accepted: 14752 Description In this problem, you have to analyze a partic...
分类:其他好文   时间:2014-08-04 21:45:18    阅读次数:318
How to Analyze Problems Related to Internal Errors (ORA-600) and Core Dumps (ORA-7445) using My Oracle Support (文档 ID 260459.1)
Oracle Database - Enterprise Edition - Version 8.1.7.4 and later Information in this document applies to any platform. **Checked for relevance 06-Apr-...
分类:数据库   时间:2014-08-04 10:45:27    阅读次数:363
Linux Rootkit Sample && Rootkit Defenser Analysis
This paper attempts to analyze the characteristics from the attacker's point of view about the currentopen source rootkit key technology, hope can fin...
分类:系统相关   时间:2014-08-02 18:18:34    阅读次数:786
通过LoadRunner - Analyze详细分析页面元素请求
众所周知LoadRunner录制某个链接,包括动态请求与js、css、jpg等静态请求。 针对页面每一个请求元素,怎么定位具体分析呢?
分类:其他好文   时间:2014-07-31 12:29:06    阅读次数:289
Ultra-QuickSort(树状数组 + 离散化)
Description In this problem, you have to analyze a particular sorting algorithm. The algorithm processes a sequence of n distinct integers by swapping two adjacent sequence elements until the seq...
分类:其他好文   时间:2014-07-30 12:22:33    阅读次数:290
[LeetCode 题解]: Merge k Sorted Lists
Mergeksorted linked lists and return it as one sorted list. Analyze and describe its complexity.题意:对k个有序的链表进行归并排序。并分析其复杂度。/** * Definition for singly-...
分类:其他好文   时间:2014-07-29 11:02:16    阅读次数:205
debug makefile 及 lint 软件质量软件
make -dshould give you more than enough information to debug your makefile.Be warned: it will take some time and effort to analyze the output but load...
分类:其他好文   时间:2014-07-28 14:58:43    阅读次数:490
poj 2299
Ultra-QuickSort Time Limit: 7000MS   Memory Limit: 65536K Total Submissions: 40427   Accepted: 14559 Description In this problem, you have to analyze a particular sorting...
分类:其他好文   时间:2014-07-27 11:44:44    阅读次数:251
Merge k Sorted Lists leetcode java
题目:Merge k sorted linked lists and return it as one sorted list. Analyze and describe its complexity.题解:Merge k sorted linked list就是merge 2 sorted li....
分类:编程语言   时间:2014-07-26 05:44:37    阅读次数:304
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