小编San*_*ikh的帖子

我在SQL Server中有大字符串.我想将该字符串截断为10或15个字符

原始字符串

this is test string. this is test string. this is test string. this is test string.

期望的字符串

this is test string. this is ......

我可以使用C#.net从文本中提取所有电话号码吗？

string selectedLeaveTypes = "";
  foreach (ListItem item in chkLeaveType.Items)
      {
         if (item.Selected)
         {
          selectedLeaveTypes = selectedLeaveTypes + "'" + item.Value + "',";
         }
      }
 selectedLeaveTypes = "(" +selectedLeaveTypes+ ")";

 DataRow[] rows = dt.Select("LeaveType IN '" + selectedLeaveTypes + "'");

语法错误：IN 关键字后面的项目必须用逗号分隔并括在括号中。

如何从sql中的datetime中提取AM/PM部分