const string sql = "SELECT 邮箱地址 AS 'emailAddress',姓氏 AS 'firstName',姓名 AS 'lastName', 群组 AS 'group' FROM [帆软报表].[dbo].[集团邮箱通讯录] WHERE 邮箱地址 IS NOT NULL AND (姓氏 IS NOT NULL OR 姓名 IS NOT NULL)";
List<Dictionary<string, object>> list = SelectList(sql, conn);