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POoledb exception Data type mismatch in criteria expression
 

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  1. POoledb exception Data type mismatch in criteria expression
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    <p>I have filled a table in msaccess with the data from some web resource. metadata of table in msaccess and my code is as </p> <pre><code>Dim Con1 As OleDbConnection = Nothing Dim LastDateTimeOfRawNews As DateTime = Nothing Private Function copyLatestNewstoNewsAndTemporary() Con1 = DB_Manager.getConnection() Con1.Open() Dim SQL2 As String = "" LastDateTimeOfRawNews = "#6/7/2013 4:36:46 PM#" SQL2 = "insert into TemporaryNews(Title) SELECT Title FROM News where News.news_Date &gt;='" + LastDateTimeOfRawNews + "'" Dim objCmd2 As OleDbCommand = New OleDbCommand(SQL2, Con1) objCmd2.ExecuteNonQuery() Con1.Close() End Function </code></pre> <p>metadata:</p> <pre><code>NewsId -&gt; AutoNumber Title -&gt; Text news_Date Date/Time etc </code></pre> <p>I got {"Data type mismatch in criteria expression."} exception</p> <pre><code>exception full detail is as under System.Data.OleDb.OleDbException was unhandled ErrorCode=-2147217913 Message=Data type mismatch in criteria expression. Source=Microsoft JET Database Engine StackTrace: at System.Data.OleDb.OleDbCommand.ExecuteCommandTextErrorHandling(OleDbHResult hr) at System.Data.OleDb.OleDbCommand.ExecuteCommandTextForSingleResult(tagDBPARAMS dbParams, Object&amp; executeResult) at System.Data.OleDb.OleDbCommand.ExecuteCommandText(Object&amp; executeResult) at System.Data.OleDb.OleDbCommand.ExecuteCommand(CommandBehavior behavior, Object&amp; executeResult) at System.Data.OleDb.OleDbCommand.ExecuteReaderInternal(CommandBehavior behavior, String method) at System.Data.OleDb.OleDbCommand.ExecuteNonQuery() at WBand.frmMain.copyLatestNewstoNewsAndTemporary() in C:\Users\Khanz\Desktop\Latest news\Editing\WBand\Form1.vb:line 679 at WBand.frmMain.Button3_Click(Object sender, EventArgs e) in C:\Users\Khanz\Desktop\Latest news\Editing\WBand\Form1.vb:line 918 at System.Windows.Forms.Control.OnClick(EventArgs e) at System.Windows.Forms.Button.OnClick(EventArgs e) at System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent) at System.Windows.Forms.Control.WmMouseUp(Message&amp; m, MouseButtons button, Int32 clicks) at System.Windows.Forms.Control.WndProc(Message&amp; m) at System.Windows.Forms.ButtonBase.WndProc(Message&amp; m) at System.Windows.Forms.Button.WndProc(Message&amp; m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message&amp; m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message&amp; m) at System.Windows.Forms.NativeWindow.DebuggableCallback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) at System.Windows.Forms.UnsafeNativeMethods.DispatchMessageW(MSG&amp; msg) at System.Windows.Forms.Application.ComponentManager.System.Windows.Forms.UnsafeNativeMethods.IMsoComponentManager.FPushMessageLoop(Int32 dwComponentID, Int32 reason, Int32 pvLoopData) at System.Windows.Forms.Application.ThreadContext.RunMessageLoopInner(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.ThreadContext.RunMessageLoop(Int32 reason, ApplicationContext context) at System.Windows.Forms.Application.Run(ApplicationContext context) at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.OnRun() at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.DoApplicationModel() at Microsoft.VisualBasic.ApplicationServices.WindowsFormsApplicationBase.Run(String[] commandLine) at WBand.My.MyApplication.Main(String[] Args) in 17d14f5c-a337-4978-8281-53493378c1071.vb:line 81 at System.AppDomain._nExecuteAssembly(Assembly assembly, String[] args) at System.AppDomain.ExecuteAssembly(String assemblyFile, Evidence assemblySecurity, String[] args) at Microsoft.VisualStudio.HostingProcess.HostProc.RunUsersAssembly() at System.Threading.ThreadHelper.ThreadStart_Context(Object state) at System.Threading.ExecutionContext.Run(ExecutionContext executionContext, ContextCallback callback, Object state) at System.Threading.ThreadHelper.ThreadStart() InnerException: </code></pre> <p>Also please tell me that is there any difference between datetime type of msaccess and vb.net's datetime type.</p>
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    1. PO
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    1. This table or related slice is empty.
    1. PTQuestion
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    1. USMusaab Zeeshan
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    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. This table or related slice is empty.
    1. PO
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      1. PTAnswer
    1. This table or related slice is empty.
    1. COYou assigning string value to `LastDateTimeOfRawNews` and use it as string in your variable that holds SQL Query. Can you try defining it as `Dim LastDateTimeOfRawNews As String` in your code?
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      1. POoledb exception Data type mismatch in criteria expression
      1. USYuriy Galanter
    2. COi am getting date and time from a function as under. . . while hardcoded value is just for testing, and founding same exception
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      1. POoledb exception Data type mismatch in criteria expression
      1. USMusaab Zeeshan
    3. CODim QueryOFLastRecordOFRawNews As String = "SELECT TOP 1 news_Date FROM News ORDER BY NewsId DESC" 'Dim QueryOFLastRecordOFRawNews As String = "SELECT news_Date FROM News where news_Date =#6/7/2013 11:36:13 AM#" Dim Conn2 As OleDbConnection = Nothing Dim cmd As OleDbCommand Private Function GetDateTimeOfLastNewsInRawNews(ByRef QueryOFLastRecordOFRawNews As String)
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      1. POoledb exception Data type mismatch in criteria expression
      1. USMusaab Zeeshan
 

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