MySQL支持定义自己的变量.这些变量可以被设置为查询结果,这使我们可以方便地把一些值存储起来供今后查询使用. ; +-----------------+ | @HisName:= name | +-----------------+ | Lily | +-----------------+ row in set (0.01 sec) mysql> SELECT * FROM student WHERE name=@HisName; +------+-----+------------+ | n
@echo off title Tomcat环境变量设置 color 0a set /p inputTH=D:\Work\024_Tomcat if /i "%inputTH%"=="" set inputTH=%Tomcat_Home% echo 正在配置环境变量,请稍候...... reg add "HKCU\Environment" /v Tomcat_Home /t reg_sz /d "%inputTH%" /f r
Mac 系统环境变量设置 vim ~/.bash_profile export PATH=$PATH:/Users/wangchengcheng/Downloads/LearningSoftWare/Android/SDK/android-sdk-macosx/toolsexport PATH=$PATH:/Users/wangchengcheng/Downloads/LearningSoftWare/Android/SDK/android-sdk-macosx/platform-to