安装完MySQL，Path：C:\Program Files\MySQL\mysql-5.7.9-winx64\bin;安装完SqlServer2005，Path：（因为SqlServer安装的组件多，所以有那么多环境变量。根据安装的组件，添加环境变量）C:\Program Files (x86)\Microsoft SQL Server\80\Tools\Binn\;C:\Program Files\Microsoft SQL Server\90\Tools\...