<?xml version="1.0" encoding="utf-8"?><?xml-stylesheet href='http://feeds.feedsky.com/styles/temp01.xsl' type='text/xsl' ?><!--这是一个由Feedsy提供技术支持的Feed，为了提高读者阅读的体验，以及满足用户美化自己Feed的需要，我们设计了多种精美的Feed模板，提供给大家选择，所有最终呈现出来的样式，皆由用户自愿选择使用，未经许可，任何团体和个人，请不要擅自修改样式或者盗用，这是对于用户选择权的尊重。--><rss xmlns:atom="http://www.w3.org/2005/Atom" xmlns:fs="http://www.feedsky.com/namespace/feed" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:dc="http://purl.org/dc/elements/1.1/" version="2.0"><channel><atom:link href="http://feeds.feedsky.com/csdn.net/FlashElf" type="application/rss+xml" rel="self"></atom:link><fs:self_link href="http://feeds.feedsky.com/csdn.net/FlashElf" type="application/rss+xml"></fs:self_link><lastBuildDate>Thu, 07 Sep 2006 10:27:00 GMT</lastBuildDate><title>FlashElf的专栏</title><link>http://blog.csdn.net/flashelf/</link><item><title>DHTML,Table标签,固定行头,固定列头列</title><link>http://blog.csdn.net/FlashElf/archive/2006/09/07/1188856.aspx</link><wfw:comment>http://blog.csdn.net/flashelf/comments/1188856.aspx</wfw:comment><slash:comments>4</slash:comments><wfw:commentRss>http://blog.csdn.net/flashelf/comments/commentRss/1188856.aspx</wfw:commentRss><trackback:ping>http://tb.blog.csdn.net/TrackBack.aspx?PostId=1188856</trackback:ping><description>DHTML,Table标签,固定行头,固定列头列&lt;img src =&quot;http://blog.csdn.net/flashelf/aggbug/1188856.aspx&quot; width = &quot;1&quot; height = &quot;1&quot; /&gt;</description><pubDate>Thu, 07 Sep 2006 18:27:00 +0800</pubDate><author>FlashElf</author><comments>http://blog.csdn.net/FlashElf/archive/2006/09/07/1188856.aspx#Feedback</comments><guid isPermaLink="false">http://blog.csdn.net/FlashElf/archive/2006/09/07/1188856.aspx</guid><dc:creator>FlashElf</dc:creator></item><item><title>去除网站讨厌的 javaScript 脚本</title><link>http://blog.csdn.net/FlashElf/archive/2006/05/24/753217.aspx</link><wfw:comment>http://blog.csdn.net/flashelf/comments/753217.aspx</wfw:comment><slash:comments>3</slash:comments><wfw:commentRss>http://blog.csdn.net/flashelf/comments/commentRss/753217.aspx</wfw:commentRss><trackback:ping>http://tb.blog.csdn.net/TrackBack.aspx?PostId=753217</trackback:ping><description>破解右键菜单屏蔽,破解讨厌的 javaScript 等等...&lt;img src =&quot;http://blog.csdn.net/flashelf/aggbug/753217.aspx&quot; width = &quot;1&quot; height = &quot;1&quot; /&gt;</description><pubDate>Thu, 25 May 2006 01:16:00 +0800</pubDate><author>FlashElf</author><comments>http://blog.csdn.net/FlashElf/archive/2006/05/24/753217.aspx#Feedback</comments><guid isPermaLink="false">http://blog.csdn.net/FlashElf/archive/2006/05/24/753217.aspx</guid><dc:creator>FlashElf</dc:creator></item><item><title>dotNet 桌面程序改造计划.窗口篇.Visual Studio.NET 风格的mdi窗口</title><link>http://blog.csdn.net/FlashElf/archive/2005/03/13/318852.aspx</link><wfw:comment>http://blog.csdn.net/flashelf/comments/318852.aspx</wfw:comment><slash:comments>5</slash:comments><wfw:commentRss>http://blog.csdn.net/flashelf/comments/commentRss/318852.aspx</wfw:commentRss><trackback:ping>http://tb.blog.csdn.net/TrackBack.aspx?PostId=318852</trackback:ping><description>Visual Studio.NET 风格的mdi 窗口&lt;img src =&quot;http://blog.csdn.net/flashelf/aggbug/318852.aspx&quot; width = &quot;1&quot; height = &quot;1&quot; /&gt;</description><pubDate>Mon, 14 Mar 2005 03:32:00 +0800</pubDate><author>FlashElf</author><comments>http://blog.csdn.net/FlashElf/archive/2005/03/13/318852.aspx#Feedback</comments><guid isPermaLink="false">http://blog.csdn.net/FlashElf/archive/2005/03/13/318852.aspx</guid><dc:creator>FlashElf</dc:creator></item><item><title>利用批处理文件轻巧，破解 RAR,ZIP 密码？</title><link>http://blog.csdn.net/FlashElf/archive/2005/02/17/291032.aspx</link><wfw:comment>http://blog.csdn.net/flashelf/comments/291032.aspx</wfw:comment><slash:comments>11</slash:comments><wfw:commentRss>http://blog.csdn.net/flashelf/comments/commentRss/291032.aspx</wfw:commentRss><trackback:ping>http://tb.blog.csdn.net/TrackBack.aspx?PostId=291032</trackback:ping><description>利用批处理文件轻巧，破解 RAR,ZIP 密码？
这两天一个朋友以前的 rar 密码忘记了......&lt;img src =&quot;http://blog.csdn.net/flashelf/aggbug/291032.aspx&quot; width = &quot;1&quot; height = &quot;1&quot; /&gt;</description><pubDate>Thu, 17 Feb 2005 23:01:00 +0800</pubDate><author>FlashElf</author><comments>http://blog.csdn.net/FlashElf/archive/2005/02/17/291032.aspx#Feedback</comments><guid isPermaLink="false">http://blog.csdn.net/FlashElf/archive/2005/02/17/291032.aspx</guid><dc:creator>FlashElf</dc:creator></item><item><title>dotNet 桌面程序改造计划.下拉框篇.DataGrid下拉窗口</title><link>http://blog.csdn.net/FlashElf/archive/2005/02/02/277121.aspx</link><wfw:comment>http://blog.csdn.net/flashelf/comments/277121.aspx</wfw:comment><slash:comments>22</slash:comments><wfw:commentRss>http://blog.csdn.net/flashelf/comments/commentRss/277121.aspx</wfw:commentRss><trackback:ping>http://tb.blog.csdn.net/TrackBack.aspx?PostId=277121</trackback:ping><description>dotNet 桌面程序改造计划.下拉框篇.DataGrid下拉窗口
实现下拉的 DataGrid 数据选取框&lt;img src =&quot;http://blog.csdn.net/flashelf/aggbug/277121.aspx&quot; width = &quot;1&quot; height = &quot;1&quot; /&gt;</description><pubDate>Wed, 02 Feb 2005 08:13:00 +0800</pubDate><author>FlashElf</author><comments>http://blog.csdn.net/FlashElf/archive/2005/02/02/277121.aspx#Feedback</comments><guid isPermaLink="false">http://blog.csdn.net/FlashElf/archive/2005/02/02/277121.aspx</guid><dc:creator>FlashElf</dc:creator></item><item><title>dotNet 桌面程序改造计划.下拉框篇.类似Word的颜色下拉框</title><link>http://blog.csdn.net/FlashElf/archive/2005/01/30/273954.aspx</link><wfw:comment>http://blog.csdn.net/flashelf/comments/273954.aspx</wfw:comment><slash:comments>14</slash:comments><wfw:commentRss>http://blog.csdn.net/flashelf/comments/commentRss/273954.aspx</wfw:commentRss><trackback:ping>http://tb.blog.csdn.net/TrackBack.aspx?PostId=273954</trackback:ping><description>dotNet 桌面程序改造计划.下拉框篇.类似Word的颜色下拉框&lt;img src =&quot;http://blog.csdn.net/flashelf/aggbug/273954.aspx&quot; width = &quot;1&quot; height = &quot;1&quot; /&gt;</description><pubDate>Sun, 30 Jan 2005 21:20:00 +0800</pubDate><author>FlashElf</author><comments>http://blog.csdn.net/FlashElf/archive/2005/01/30/273954.aspx#Feedback</comments><guid isPermaLink="false">http://blog.csdn.net/FlashElf/archive/2005/01/30/273954.aspx</guid><dc:creator>FlashElf</dc:creator></item><item><title>以编程方式使用批语句节省 数据库 IO 来提高性能</title><link>http://blog.csdn.net/FlashElf/archive/2004/12/09/210729.aspx</link><wfw:comment>http://blog.csdn.net/flashelf/comments/210729.aspx</wfw:comment><slash:comments>1</slash:comments><wfw:commentRss>http://blog.csdn.net/flashelf/comments/commentRss/210729.aspx</wfw:commentRss><trackback:ping>http://tb.blog.csdn.net/TrackBack.aspx?PostId=210729</trackback:ping><description>大家都知道在程序中尽量少和数据库交互是可以 提高程序性能的，

以下举一个比较常见的例子

如：需要根据 某条件判断条记录是否存在 如果不存在就 插入的这种操作。

一般都会用 2 次数据库io ， 1次取 Count 如果=0 就 INSERT INTO 其实在 Oracle, 或 SQL Service

等大型数据库中可以使用批 SQL 语句节省数据库 IO(和数据库的交互).

以下例子是一个简单的的演示执行一次数据库 io（Oracle数据库演示 SQLService 也差不多），适合使用在写存储过程没太大意义的时候。

。。。。。。。&lt;img src =&quot;http://blog.csdn.net/flashelf/aggbug/210729.aspx&quot; width = &quot;1&quot; height = &quot;1&quot; /&gt;</description><pubDate>Fri, 10 Dec 2004 00:51:00 +0800</pubDate><author>FlashElf</author><comments>http://blog.csdn.net/FlashElf/archive/2004/12/09/210729.aspx#Feedback</comments><guid isPermaLink="false">http://blog.csdn.net/FlashElf/archive/2004/12/09/210729.aspx</guid><dc:creator>FlashElf</dc:creator></item><item><title>Windows 控件限制用户输入的基本法门(.NET 篇)</title><link>http://blog.csdn.net/FlashElf/archive/2004/10/31/161024.aspx</link><wfw:comment>http://blog.csdn.net/flashelf/comments/161024.aspx</wfw:comment><slash:comments>11</slash:comments><wfw:commentRss>http://blog.csdn.net/flashelf/comments/commentRss/161024.aspx</wfw:commentRss><trackback:ping>http://tb.blog.csdn.net/TrackBack.aspx?PostId=161024</trackback:ping><description>Windows 控件限制用户输入的基本法门(.NET 篇)&lt;img src =&quot;http://blog.csdn.net/flashelf/aggbug/161024.aspx&quot; width = &quot;1&quot; height = &quot;1&quot; /&gt;</description><pubDate>Mon, 01 Nov 2004 00:18:00 +0800</pubDate><author>FlashElf</author><comments>http://blog.csdn.net/FlashElf/archive/2004/10/31/161024.aspx#Feedback</comments><guid isPermaLink="false">http://blog.csdn.net/FlashElf/archive/2004/10/31/161024.aspx</guid><dc:creator>FlashElf</dc:creator></item><item><title>ASP.NET 验证控件安全隐患</title><link>http://blog.csdn.net/FlashElf/archive/2004/07/15/41940.aspx</link><wfw:comment>http://blog.csdn.net/flashelf/comments/41940.aspx</wfw:comment><slash:comments>8</slash:comments><wfw:commentRss>http://blog.csdn.net/flashelf/comments/commentRss/41940.aspx</wfw:commentRss><trackback:ping>http://tb.blog.csdn.net/TrackBack.aspx?PostId=41940</trackback:ping><description>ASP.NET,安全,ASP.NET 验证控件安全隐患&lt;img src =&quot;http://blog.csdn.net/flashelf/aggbug/41940.aspx&quot; width = &quot;1&quot; height = &quot;1&quot; /&gt;</description><pubDate>Thu, 15 Jul 2004 18:19:00 +0800</pubDate><author>FlashElf</author><comments>http://blog.csdn.net/FlashElf/archive/2004/07/15/41940.aspx#Feedback</comments><guid isPermaLink="false">http://blog.csdn.net/FlashElf/archive/2004/07/15/41940.aspx</guid><dc:creator>FlashElf</dc:creator></item><item><title>.Net 实现纳秒级别计算</title><link>http://blog.csdn.net/FlashElf/archive/2004/06/23/24336.aspx</link><wfw:comment>http://blog.csdn.net/flashelf/comments/24336.aspx</wfw:comment><slash:comments>11</slash:comments><wfw:commentRss>http://blog.csdn.net/flashelf/comments/commentRss/24336.aspx</wfw:commentRss><trackback:ping>http://tb.blog.csdn.net/TrackBack.aspx?PostId=24336</trackback:ping><description>.Net 实现纳秒级别计算&lt;img src =&quot;http://blog.csdn.net/flashelf/aggbug/24336.aspx&quot; width = &quot;1&quot; height = &quot;1&quot; /&gt;</description><pubDate>Thu, 24 Jun 2004 03:07:00 +0800</pubDate><author>FlashElf</author><comments>http://blog.csdn.net/FlashElf/archive/2004/06/23/24336.aspx#Feedback</comments><guid isPermaLink="false">http://blog.csdn.net/FlashElf/archive/2004/06/23/24336.aspx</guid><dc:creator>FlashElf</dc:creator></item></channel></rss>