摘要:
下面的代码实现修改显示器分辨率和刷新频率的功能:using System; using System.Drawing; using System.Collections; using System.ComponentModel; using System.Windows.Forms; using System.Data; using System.Runtime.InteropServices; ... 阅读全文
摘要:
1. 处理日期型数据Select * From Subject Where PubTime>=#01/01/2005#2. Access中以“*”代替了标准SQL中的“%”。3. “_”代表单一字符Select * From Users Where Name Like '_ _'4. Having子句允许为每个组指定条件,跟在Group By子句后面。Select UserName,Count(*... 阅读全文