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where, group by, having
where vs having当一个sql语句中存在where子句,会先执行where,然后执行group by,然后执行having.一般来说,only use 'having' when you use 'group by'Always use 'having' with aggregate f...
分类:其他好文   时间:2014-07-07 16:58:32    阅读次数:183
eclipse 安装scons
http://www.sconsolidator.com/updateInstallationTo use SConsolidator, you first have to installSCons(version 2.0 is the minimum requirement). SConsolid...
分类:系统相关   时间:2014-07-07 16:19:42    阅读次数:458
「笔记」「ubuntu」mint个人shell样式脚本
alias ll='ls -al'use_color=false# Set colorful PS1 only on colorful terminals.# dircolors --print-database uses its own built-in database# instead of ...
分类:其他好文   时间:2014-07-07 13:41:54    阅读次数:245
介绍两个JQuery插件 — 滚动和轮播
1、滚动组件。有时候需要在网页中的各个部分跳转,类似于回到首页的功能,给点动画当然是极好的。JQuery插件AnimateScroll就是解决这个问题的。使用方法类似这样:$('#use').animatescroll({scrollSpeed:1500, easing:'easeOutCubic'...
分类:Web程序   时间:2014-07-07 13:04:13    阅读次数:170
[转] virt-builder, to trivially create various Linux distribution guest images
http://kashyapc.com/2014/01/27/virt-builder-to-trivially-create-various-linux-distribution-guest-images/ I frequently use virt-builder (part of libgue...
分类:系统相关   时间:2014-06-30 23:21:25    阅读次数:359
windows下配置Sublime Text 2开发Nodejs
1 下载 Sublime Text 2 http://www.sublimetext.com/2 下载Nodejs插件,下载ZIP包 https://github.com/tanepiper/SublimeText-Nodejs3 解压ZIP,重命名为Nodejs4 将Nodejs复制到C:\Use...
分类:Windows程序   时间:2014-06-30 20:53:39    阅读次数:4835
You Can Use Bags To Extend The Life Of Dry Foods
Weekly golfers will find a bag that gives them enough space to do a lot of tees, balls, sticks, and whatever he deems necessary for the golf course. P...
分类:其他好文   时间:2014-06-30 20:52:39    阅读次数:258
ios8 swift开发:显示变量的类名称
var ivar = [:] ivar.className // __NSDictionaryI var i = 1 i.className // error: 'Int' does not have a member named 'className' If you want to get the type of a primitive, you have to use brid...
分类:移动开发   时间:2014-06-30 20:14:35    阅读次数:311
Blocks
Blocks are a way to define a block of code that you will use at a later time.Sometimes people refer to blocks as anonymous functions because they are ...
分类:其他好文   时间:2014-06-30 15:21:04    阅读次数:220
Set Matrix Zeroes
题目 Given a m x n matrix, if an element is 0, set its entire row and column to 0. Do it in place. Follow up: Did you use extra space? A straight forward solution using O(mn) space is probab...
分类:其他好文   时间:2014-06-30 06:17:09    阅读次数:245
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