怎么去除多表查询情况下的重复的老师信息的出现
try
             {
                 int t = SecurityHelper.SafeRequestInt("T", 0);
                 TableSelector xTableSelector = new TableSelector();
                 CourseDal dal = new CourseDal();
                 dal.SetCommand(TTlion.DataProvider.Common.CommandAction.Select);
                 string tables = "Qz_Course c Inner Join Qz_User u on c.TeacherId=u.Id";
                 string fields = " c.TeacherId,U.Name,U.EName,U.UserName,Time";
                 int pageIndex = TTlion.Toolkit.SecurityHelper.SafeRequestInt("page", 1);
                 string sWhere = "1=1 and StudentId={0} ";
                 sWhere = string.Format(sWhere, CurrentUser.UserId);
                 int totalCount = 0;
                 using (DataSet source = dal.GetRecordFromPage(tables, fields, "c.TeacherId", sWhere, "c.TeacherId asc", 2, Pager.PageSize, pageIndex, out totalCount))
                 {
                     if (totalCount > 0)
                     {
                         if (totalCount > 0)
                         {
                             this.rptList.DataSource = source.Tables[0];
                             this.rptList.DataBind();
                             Pager.RecordCount = totalCount;
                         }
                     }
                 }
             }
             catch
             {
             }
------解决方案--------------------
这个要从SQL语句着手,通过group by
或者
对数据集进行Filter过滤,将重复的去掉后,然后绑定到Repeater控件中
------解决方案--------------------楼上说的,是可以的,group by来分组,去掉重复的,复杂的SQL文,可以通过,写储存过程来控制,在通过程序调用它。
------解决方案--------------------通过SQL查询过滤,或使用LINQ的distinct过滤