Oracle分析函数二——函数用法
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Oracle分析函数一——函数列表
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用java和oracle实现BLOB字段的字符串读取(独家)
阅读了一个帖子“有没有可能写出比Oracle函数更快的外部存储过程”(http://www.itpub.net/thread-1117461-1-1.html)突发灵感,加上原来有一个需求,需要从BLOB字段(本来就是字符型的内容)中直接读取成为...
各种系统架构图及其简介(原创+收集)
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大型网站系统架构分析(转载)
大型网站系统架构分析原文出处:http://www.cnblogs.com/Mainz/archive/2009/04/28/1445424.html千万级的注册用户,千万级的帖子,nTB级的附件,还有巨大的日访问量,大型网站采用什么系统架构保证性能和稳定性? ...
大型网站架构演变和知识体系(转载)
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大型网站架构之:MySpace的体系架构二(转载)
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说说大型高并发高负载网站的系统架构(转载)
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我在itpub的日子——写在itpub八周年之际
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别沪
沪上有娟女,相识三余载。我曾沪中客,依嘘不得见今我赴琼岛,将做他人父。自此两茫茫,默默不得语。镜花水中月,幽幽倾心埋。多少世间事,从来莫强求。...
mark一下,为了做半点调度一小时间隔job所做的辛苦
该job需要每小时运行一次,为了和其他任务错开,需要在半点上执行,从网上搜索了很久,也没结果。其实很简单通过decode函数处理某时间减一秒后的30的倍数,如果是1(即下半点)则去当前整点+一个半小时,否则取当前整...
个人独白
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删除Oracle重复记录
以最简单的方式删除Oracle重复记录环境:表无主键或唯一索引约束,导致记录重复,只能根据理论上的主键值来进行删除,如果无理论上的主键值,则进行全字段匹配的方式来进行,仅供自己参考!Delete from TableName a ...
Oracle的逻辑结构(表空间、段、区间、块)——总结
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Oracle的逻辑结构(表空间、段、区间、块)——表空间
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Oracle的逻辑结构(表空间、段、区间、块)——段
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Oracle的逻辑结构(表空间、段、区间、块)——区间
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Oracle的逻辑结构(表空间、段、区间、块)——Oracle数据块(二)
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Oracle的逻辑结构(表空间、段、区间、块)——Oracle数据块(一)
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I was not when you were born,You were old when I was born!
I was not when you were bornYou were old when I was bornI was not when you were bornYou were old when I was bornYou regret that I was late bornI regret that you were early bornI was not when you were ...