Server Error in '/' Application.

---

Line 313:                catch (System.Data.OleDb.OleDbException ex)
Line 314:                {
Line 315:                    throw new Exception(ex.Message);
Line 316:                }
Line 317:                return ds;

[Exception: 语法错误 (操作符丢失) 在查询表达式 'a.news_id>29 and a.news_group= and a.news_group=b.CategoryId' 中。]
   DBUtility.DbHelperOleDb.Query(String SQLString) in d:\vhostroot\localuser\hongqhq\www\App_Code\DbHelperOleDb.cs:315
   cn_controls_new_page.shownewsdetail(Int32 id, Int32 curpg) in d:\vhostroot\localuser\hongqhq\www\controls\new_page.ascx.cs:57
   cn_controls_new_page.Page_Load(Object sender, EventArgs e) in d:\vhostroot\localuser\hongqhq\www\controls\new_page.ascx.cs:17
   System.Web.Util.CalliHelper.EventArgFunctionCaller(IntPtr fp, Object o, Object t, EventArgs e) +14
   System.Web.Util.CalliEventHandlerDelegateProxy.Callback(Object sender, EventArgs e) +35
   System.Web.UI.Control.OnLoad(EventArgs e) +91
   System.Web.UI.Control.LoadRecursive() +74
   System.Web.UI.Control.LoadRecursive() +146
   System.Web.UI.Control.LoadRecursive() +146
   System.Web.UI.Control.LoadRecursive() +146
   System.Web.UI.Page.ProcessRequestMain(Boolean includeStagesBeforeAsyncPoint, Boolean includeStagesAfterAsyncPoint) +2207