Home Database Mysql Tutorial 一些工作中遇到的小问题,以及一些小技巧积累,慢慢更新

一些工作中遇到的小问题,以及一些小技巧积累,慢慢更新

Jun 07, 2016 pm 03:35 PM
Skill renew meet question

比较不错的一个在线工具网站http://tool.oschina.net/ 1、问题描述:工作中经常用到UE,每次修改文件后,UE会保存一个bak后缀的文件,不想再生成这类文件。 解决方法: 打开UE菜单中 高级-配置-文件处理-备份 选择左侧的不备份 就可以了。 2、问题描述:从SV

比较不错的一个在线工具网站http://tool.oschina.net/



1、问题描述:工作中经常用到UE,每次修改文件后,UE会保存一个bak后缀的文件,不想再生成这类文件。

      解决方法: 打开UE菜单中 高级->配置->文件处理->备份   选择左侧的不备份 就可以了。

2、问题描述:从SVN上以前CHECK的代码,忘记了地址

      解决方法:在以前下载的项目文件上右键->属性,多了个Subversion栏,选中Subversion栏,里面有一个URL,就是check代码的地址了。

3、问题描述:使用spring tools suit开发工具,服务器使用的是wildfly8.0,但sts对JBOSS的支持只到5.0

      解决方法:打开help->install new software

                         http://download.jboss.org/jbosstools/updates/stable/kepler/          名称可以随便写

                         点击OK->NEXT进入窗口,选择全选,一路向下,完成安装,提示需要重启IDE

                        重启IDE后在Windows->Preference->Server->Runtime Environment 中即可以添加Wildfly了

4、问题描述:新打开的Eclipse开发工具中不显示代码行数

      解决方法:打开Windows->Preference->General->Editors->Text Editors  选中Show Line numbers

5、问题描述:SVN下载的代码有时需要解除与SVN的关联

      解决方法:新建一个记事本,粘贴如下代码,保存为reg后缀文件,双击该文件执行

                  

Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Folder\shell\DeleteSVN]
@="删除该目录下面.svn文件"
[HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Folder\shell\DeleteSVN\command]
@="cmd.exe /c \"TITLE Removing SVN Folders in %1 && COLOR 9A && FOR /r \"%1\" %%f IN (.svn) DO RD /s /q \"%%f\" \""
Copy after login

      执行完成后,选中项目右键,出现删除SVN文件的菜单,即可解除与SVN的关联。


      如果要解除右键中该菜单,则再按照上面步骤执行下面代码即可

<pre name="code" class="html">Windows Registry Editor Version 5.00
[-HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Folder\shell\DeleteSVN]
Copy after login

6、问题描述:Eclipse中有时我们需要复制一个工程为新工程

      解决方法:1、进入该工程跟目录,直接复制一份备份工程,例如“testA”工程,复制一份就为“testA备份”,直接重命名“testA备份”为“testB”

                          2、进入testB工程目录下,修改工程中.project文件中 testA 修改为  testB

                          3、进入testB工程目录下的.settings文件下,修改org.eclipse.wst.common.component文件中即可。

Copy after login

7、问题描述:数据库用的mysql,执行一个关联操作时报错 Every derived table must have its own alias

                          假设SQL语句为  Select *  From   (Select A.*,B.* From A Left Join B On A.xx=B.xx)

      解决方法:mysql中进行嵌套查询的时候,子查询的结果作为一个派生表来进行上一级查询的时候,派生表必须指定一个别名。

                          Select *  From   (Select A.*,B.* From A Left Join B On A.xx=B.xx)  As Test      这样即可执行成功。

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