本文归根结底的办法就是利用cmd命令行将未卸载完全的插件或程序进行完美卸载(需要手动先卸载oracle之后，执行cmd删除，最后删除注册表和安装路径下的文件，重启电脑，再次尝试安装Oracle)。
hi i have a table as followsid,school,address,city,state,phone,email,fax . There is almost 40 cities . I need to select 1 entry from each city. can any one guide me
加载中,请稍侯......