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人们在使用SQL时往往会陷入一个误区，即太关注于所得的结果是否正确，而忽略了不同的实现方法之间可能存在的 性能差异，这种性能差异在大型的或是复杂的数据库环境中（如联机事务处理OLTP或决策支持系统DSS）中表现得尤为明 显。笔者在工作实践中发现，不良的SQL往往来自于不恰当的索引设计、不充份的连接条件和不可优化的where子句。在对 它们进行适当的优化后，其运行速度有了明显地提高！下面我将从这三个方面分别进行总结：-people in the use of SQL often fall into the trap, that is too focused on the findings is correct, and ignore a different method may exist between the performance differences, these differences in large or complex database environment (such as online transaction processing or decision support OLTP system DSS) has become even more obvious. In practice I found that the poor tend to SQL from inappropriate design of the index, not fully connected and non-optimal conditions where the phrase. On their proper optimization, and their operating speed has been improved! Now I will be three aspects of this summary :

CXInfoTip - Information Tooltip 是我在网上找的，版权归原作者所有。-CXInfoTip- Information Tooltip is what I find online, and belongs to original author.

Clipper锯齿边缘阴影框的设计-Clipper jagged edges of the shadow box design

使用浏览器实现苹果工具条 并且在浏览器下方绘制新的蓝色气泡窗口-mac bar use ie

信息条，这个条很像outLook、outLook Express 或是FrongPage的编辑条，它很适合用文字和图片显示指定程序的信息，可以动态的改变文字、文字颜色、背景颜色、文字字体、位图。-information, much like outLook of this, outLook Express or FrongPage editor, it is very suitable in words and pictures show that the specified procedure information, dynamic change text, text color, background color, Fonts, bitmap.

WannaPlayDIB实用图形库 Bitmap包装器实现 Bitmap文件存取类:支持8位调色板位图和24位真彩位图的载入，以及24位真彩位图保存-Bitmap graphics library utility WannaPlayDIB wrapper realize Bitmap file access categories: support for palette bitmaps 8 and 24-bit true color bitmap loading, as well as 24-bit true color bitmap Save

利用Windows的远程桌面访问ActiveX，实现在程序中嵌入远程桌面访问功能的例程

一个实际应用程序,具有界面显示和下位及通信及汉字显示等功能.-A practical application, with the interface display and the next bit and communications and display features such as Chinese characters.

vc下试图分割的代码-vc attempted to separate code

在数学中，离散傅里叶变换（DFT）转换函数等间隔采样的有限列表转换的系数的实验的复数正弦波的有限组合，排序由它们的频率，具有这些相同的样本值的列表中。它可以说是将采样函数从原始域（通常是沿一条线的时间或位置）到频域转换。 输入采样是复数（在实践中，通常是实数），并且输出的系数是复杂的为好。输出的正弦信号的频率是基本频率，其对应的周期是采样间隔的长度的整数倍。通过DFT得到的正弦信号的组合，因此周期性的同一时期。在DFT不同于离散时间，它的输入和输出序列都是有限傅里叶变换（DTFT）;因此它被认为是有限域（或定期）离散时间函数的傅立叶分析。 这里是一个C＃实现的DFT的任意数量的值