摘要:
右键 open terminal 输入:sudo gedit /etc/network/interfaces #/etc/network/interfaces#This file describes the network interfaces available on your ystem#and 阅读全文
摘要:
1、不为空Select * From table Where id<>''Select * From table Where id!=''2、为空Select * From table Where id=''Select * From table Where ISNULL(id)具体情况具体分析,如 阅读全文