摘要:
带图形化界面的:ubuntu 16.04 传统的:CentOS-6.7-86_64-bin-DVD1.iso 阅读全文
摘要:
http://www.2cto.com/os/201411/356865.html root下 ]# /etc/init.d/network restart ]# vim /etc/sysconfig/network-scripts/ifcfg-eth0 ]# ping 192.168.147.2 阅读全文
摘要:
select trim('e'from 'elite'),ltrim('elite','e'), rtrim('elite','e') from dual; 阅读全文
摘要:
SELECT deptno,ename,empno, ROW_NUMBER() OVER(partition by deptno ORDER BY empno) AS emp_id FROM emp; 阅读全文