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一个实用的记事本程序,就像一个小的office world。
一个实用的记事本程序,就像一个小的office world。-Notepad a practical procedure, like a small office world.
- 2022-07-25 13:15:45下载
- 积分:1
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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(...
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 :
- 2022-07-14 22:31:11下载
- 积分:1
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使用DUintID检测出优化大师用了哪几个三方控件后,使用那些控件模仿的windows优化大师的界面,很细致的啊,^_^...
使用DUintID检测出优化大师用了哪几个三方控件后,使用那些控件模仿的windows优化大师的界面,很细致的啊,^_^-Optimize the use of master DUintID detected which spent several tripartite control, the use of those controls to optimize the master mimic the windows interface, very meticulous ah, ^ _ ^
- 2023-07-07 08:55:03下载
- 积分:1
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编译了一个简单的计算器,实现最基本的功能,乘除加减
编译了一个简单的计算器,实现最基本的功能,乘除加减-compile a simple calculator, to achieve the most basic functions, multiplication and division Modified
- 2022-03-18 07:49:56下载
- 积分:1
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VB控件实例31
VB控件实例31-40,都是简单的VB控件应用,没必要说明了,自己看-examples 31-40 VB Controls are simple VB Control application note is not necessary, themselves.
- 2022-08-21 09:31:55下载
- 积分:1
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本程序是一个透明窗体实例
本程序是一个透明窗体实例-this process is a transparent example of the form
- 2023-05-18 07:05:03下载
- 积分:1
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This a simple interface design. Through the expansion, such as adding to click o...
这只是一个简单的界面设计。 可以通过扩展为按钮等添加点击事件,从而实现想要的功能。-This a simple interface design. Through the expansion, such as adding to click on the button, thereby achieving the desired function.
- 2022-02-20 04:38:45下载
- 积分:1
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很不错的曲线例子,好用看看就知道!!!!!!
很不错的曲线例子,好用看看就知道!!!!!!
-Very good example of the curve, easy to use and see on the know! ! ! ! ! !
- 2023-03-12 13:25:04下载
- 积分:1
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MFC超级计算器
这个程序是实现 计算机计算的程序 个人设计 易于操作简单
- 2023-02-24 03:30:03下载
- 积分:1
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这代码是将Tab Ctrl添加到浮动窗口。
这代码是将Tab Ctrl添加到浮动窗口。-This code is added to the Tab Ctrl floating window.
- 2023-07-21 10:05:03下载
- 积分:1