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[Oracle]any, all解析
因为很少用到, 所以几乎忘记了这几个函数, 不过它们还是很有用的使用它们可以大大简化一些SQL文的语法, 至于效率问题,如CCW所说它们和EXISTS, IN 之类没有什么差别, 而且要具体问题具体分析其中ANY和SOME在意思上是相同的,可以相互替代.举几个例子来说明ALL和ANY的用法1. SE...
分类:数据库   时间:2014-10-29 19:08:44    阅读次数:149
Fun with layers
Fun with layers这篇文章的有些内容很奇怪,我根本就没有这种现象,所以暂时就这样吧In this post, I’ll explain how to add a border, rounded corners, and drop shadow to any UIView using so...
分类:其他好文   时间:2014-10-29 14:27:27    阅读次数:273
A Tour of Go Web servers
Package httpserves HTTP requests using any value that implementshttp.Handler:package httptype Handler interface { ServeHTTP(w ResponseWriter, r *Re...
分类:Web程序   时间:2014-10-29 00:06:07    阅读次数:226
URAL 2014 Zhenya moves from parents
2014. Zhenya moves from parentsTime limit: 1.0 secondMemory limit: 64 MBZhenya moved from his parents’ home to study in other city. He didn’t take any...
分类:其他好文   时间:2014-10-28 21:30:47    阅读次数:264
A Tour of Go Interfaces
An interface type is defined by a set of methods.A value of interface type can hold any value that implements those methods.Note:The code on the left ...
分类:其他好文   时间:2014-10-28 21:26:00    阅读次数:185
C# - ref
The ref keyword causes an argument to be passed by reference, not by value. The effect of passing by reference is that any change to the parameter in the called method is reflected in the calling me...
分类:Windows程序   时间:2014-10-28 17:58:56    阅读次数:268
SQLIO Disk Subsystem Benchmark Tool
C:\Program Files (x86)\SQLIO>sqlio -?sqlio v1.5.SG-?: invalid optionUsage: sqlio [options] [...] [options] may include any of the following: ...
分类:数据库   时间:2014-10-28 09:17:26    阅读次数:336
abstract 和 virtual的区别
(以下基于C#)1.对方法修饰的区别An abstract function can have no functionality.You're basically saying, any child class MUST give their own version of this method, ...
分类:其他好文   时间:2014-10-27 12:39:45    阅读次数:194
A Tour of Go If and else
Variables declared inside anifshort statement are also available inside any of theelseblocks.package main import ( "fmt" "math")func pow(x, n, ...
分类:其他好文   时间:2014-10-27 00:23:52    阅读次数:165
A Tour of Go Multiple results
A function can return any number of results.This function returns two strings.package mainimport "fmt"func swap(x, y string) (string, string) { ret...
分类:其他好文   时间:2014-10-26 21:00:32    阅读次数:143
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