TOP Solves Infinite Query ???

Oct 9, 2007

Hi There

I have a query that runs every night. It has been fine for months. Yesterday it started to run infinately.

When i execute it it never returns.

BUT when i add a top clause to othe query it works, now in my experience this normally happens because you are now eliminating the "bad" row with the top clause, so the join that causes it to run infinately now never occurs.

HOWEVER i run the exact query with a TOP 730 cluase and it only return 720 rows, so i am not eliminating any rows ?

Basically i have a query that runs infinately but if i add a top clause that does eliminate any rows it works ?

But if i increase the top cluase to 800 it runs inifnatley again, but it only returns 720 rows ?

I am stumped, can anyone shed some light on this please.

Thanx

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Nov 24, 1999

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Nov 1, 2007

Another thread (http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=2347749&SiteID=1) got me wondering: what exactly is this "infinite clickthrough" feature that SSRS Enterprise Edition has? Searching for "infinite clickthrough" yields little but frustration - nearly all of the hits are merely pages explaining that Enterprise Edition has it and the other editions don't, without ever describing what exactly it is.

Near as I can tell, "infinite clickthrough" refers to a feature of ReportBuilder when used in conjunction with Report Models on SSRS Enterprise whereby ReportBuilder will synthesize a clickthrough report on the fly, and has nothing to do with the ability to build "clickthrough" reports using links (the "Navigation" tab on the Properties of most any reporting services object).

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Apr 15, 2004

This code is from BOL (in index type: "DDLs-SQL Server"):
Take a look at error handling .. what happens if one of the three cmd.execute within the [Done:] hanlde fails?

It looks to me like we would have an infinite loop! .. am I missing something here?

BOL CODE EXAMPLE:
-----------------------------
Dim Cn As New ADODB.Connection
Dim Cmd As New ADODB.Command

' If the ADOTestTable does not exist, go to AdoError.
On Error GoTo AdoError

' Connect using the SQLOLEDB provider.
cn.Provider = "sqloledb"
cn.Properties("Data Source").Value = "MyServerName"
cn.Properties("Initial Catalog").Value = "northwind"
cn.Properties("Integrated Security").Value = "SSPI"
cn.Open

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Cmd.CommandText = "DROP TABLE ADOTestTable"
Cmd.CommandType = adCmdText
Cmd.Execute

Done:
Cmd.CommandText = "SET NOCOUNT ON"
Cmd.Execute
Cmd.CommandText = "CREATE TABLE ADOTestTable (id int, name char(100))"
Cmd.Execute
Cmd.CommandText = "INSERT INTO ADOTestTable values(1, 'Jane Doe')"
Cmd.Execute
Cn.Close
Exit Sub

AdoError:
Dim errLoop As Error
Dim strError As String

' Enumerate Errors collection and display properties of
' each Error object.
Set Errs1 = Cn.Errors
For Each errLoop In Errs1
Debug.Print errLoop.SQLState
Debug.Print errLoop.NativeError
Debug.Print errLoop.Description
Next

GoTo Done

End Sub
-------------------------------------------------------

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Jul 5, 2006

Hi

I have an infinite loop in a trigger I and I cant reslove it.

In my system the user updates a stock table from the GUI and on the update I need to check values to see if I need to add records to a StockHistory table. For Example: If the user changes the grade of Product X from A to B then I need to add a new line in StockHistory for product X grade A that decrements the total number of products in the warehouse. Similary I need to increase the quantity of stock for Product X grade B.

I had the trigger working for single updates but now when stock is added to the database (from another db) it has status of 'New'. This isn't actually 'in stock' until the user sets the status to 'Goods In'. This process will then update the status for all records in the category. This caused my trigger to fail as the 'inserted' table now contains many records.

Now the problem I have is the trigger is in an infinite loop. It always shows the id of the first record it finds and the @Quantity values increases as expected. I've taken all my procesing code out of the trigger and adding some debugging stuff but it still doesnt work:

CREATE TRIGGER [StockReturns_on_change] ON [dbo].[StockReturns]
FOR UPDATE
AS

DECLARE INDIVIDUAL Cursor --- Cursor for all the rows being updated

FOR
SELECT Id FROM inserted

OPEN INDIVIDUAL

FETCH NEXT FROM INDIVIDUAL INTO @Id

select @Quantity = 1

print @@FETCH_STATUS
print @Id
print @Quantity

WHILE @@FETCH_STATUS = 0
begin

select @Quantity = @Quantity + 1

print @@FETCH_STATUS
print @Id
print @Quantity

-- Get the next row from the inserted table
FETCH NEXT FROM INDIVIDUAL INTO @Id

End -- While loop on the cursor

-- no close off the cursors
CLOSE INDIVIDUAL
DEALLOCATE INDIVIDUAL

Can you help me please?

Kind Regards

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Hi i have a cursor in a Stored Procedure. The problem is that it's poiting to the first row and causing an infinite loop on it.
How can i stop this and make it go to all rows. Here is my code.

Declare @CountTSCourtesy int
Declare @WaiterName nvarchar(100), @CursorRestaurantName nvarchar (100)
Declare waiter_cursor CURSOR FOR

SELECT new_waiteridname, new_restaurantname
FROM dbo.FilteredNew_CommentCard
Where new_dateofvisit between @FromDate and @ToDate and new_restaurantname = @Restaurant
Open waiter_cursor
FETCH NEXT FROM waiter_cursor
into @WaiterName,@CursorRestaurantName
While @@FETCH_STATUS=0

BEGIN
Exec WaitersCountExCourtesy @WaiterName,@CursorRestaurantName

END
Close waiter_cursor
Deallocate waiter_cursor
END

Thanks in advance...

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I have a after update trigger that calculates one of the columns based on other column values. It has to be a trigger and only fires an update statement against the table itself when the column has changed. At a simple level it is doing something similar to the code below

IF UPDATE(Col1)
update MyTable SET Col2 = Col1 WHERE Col2 <> Col1

It works everywhere except on one site where the trigger causes itself to recurse until it reaches the 32 level error. It can be fixed by checking whether there and any records in the inserted table at the top. Like so.

IF EXISTS (SELECT * FROM inserted)
begin
IF UPDATE(Col1)
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However, I would like to know whether there is some system setting other than "nested triggers" that I am missing that would cause the behaviour.

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DROP TABLE #tTable
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[Code]....

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DECLARE @NoteID INT,-- NULL OUTPUT,
@Note_Description NVARCHAR(3000),-- = NULL,
@Date DateTime,-- = NULL OUTPUT,
@ByWho NVARCHAR(30),-- = NULL,
@FK_Action_Performed NVARCHAR(40),-- = NULL,
@FK_UserID INT,-- = NULL,
@FK_JobID INT,-- = NULL,
@Job_Date DateTime,-- = NULL,
@Start DateTime,-- = NULL,
@Finish DateTime,-- = NULL,

@BeenRead NVARCHAR(10),-- = NULL

@FK_UserIDList NVARCHAR(4000)-- = NULL

--SET @NoteID = 409 --NULL OUTPUT,
SET @Note_Description = 'Tetsing'
--SET @Date DateTime = NULL OUTPUT,
SET @ByWho = 'GeorgeAgaian'
SET @FK_Action_Performed = 'Worked hard'
SET @FK_UserID = 5
SET @FK_JobID = 29
SET @Job_Date = 28/01/03
SET @Start = '1:00:20 PM'
SET @Finish = '1:00:20 PM'
SET @BeenRead = 'UnRead'

SET @FK_UserIDList = '1,2,3'

--AS

--SET NOCOUNT ON

SET NOCOUNT ON

SET XACT_ABORT ON

BEGIN TRANSACTION

SET @Date = GETDATE()

-- Insert Values into the customer table
INSERT Note (Note_Description,
Date,
ByWho,
FK_Action_Performed,
FK_UserID,
FK_JobID,
Job_Date,
Start,
Finish)

SELECT --@NoteID,
@Note_Description,
@Date,
@ByWho,
@FK_Action_Performed,
@FK_UserID,
@FK_JobID,

@Job_Date,
@Start,
@Finish

-- Get the new Customer Identifier, return as OUTPUT param
SELECT @NoteID = @@IDENTITY

-- Insert new notes for all the users that the note pertains to, in this case this will be by the assigned
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IF @FK_UserIDList IS NOT NULL
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-- Insert New Address record
-- Retrieve Address reference into @AddressId
-- EXEC spInsertForUserNote
-- @FK_UserID,
--@NoteID,
-- @BeenRead
-- @Fax,
-- @PKId,
-- @AddressId OUTPUT

COMMIT TRANSACTION

--------------------------------------------------
GO

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INSERT INTO ledger (journal__id, account__id,account_recv_info__id,amount)

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Mar 28, 2007

Hey, i've written a query to search a database dependant on variables chosen by user etc etc. Opened up a new sqldatasource, entered the query shown below and went on to the test query page. Entered some test variables, everything works as it should do. Try to get it to show in a datagrid on a webpage - nothing. No data shows.
SELECT dbo.DERIVATIVES.DERIVATIVE_ID, count(*) AS Matches
FROM dbo.MAKES INNER JOIN
dbo.MODELS ON dbo.MAKES.MAKE_ID = dbo.MODELS.MAKE_ID INNER JOIN
dbo.DERIVATIVES ON dbo.MODELS.MODEL_ID = dbo.DERIVATIVES.MODEL_ID INNER JOIN
dbo.[VALUES] ON dbo.DERIVATIVES.DERIVATIVE_ID = dbo.[VALUES].DERIVATIVE_ID INNER JOIN
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(ATTRIBUTES.ATTRIBUTE_ID = @ATT_ID2 and (@VAL2 is null or VALUE = @VAL2)) or
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(ATTRIBUTES.ATTRIBUTE_ID = @ATT_ID4 and (@VAL4 is null or VALUE = @VAL4)) )
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CASE WHEN @VAL2 IS NOT NULL THEN 1 ELSE 0 END +
CASE WHEN @VAL3 IS NOT NULL THEN 1 ELSE 0 END +
CASE WHEN @VAL4 IS NOT NULL THEN 1 ELSE 0 END -2
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Here is the page source

<%@ Page Language="VB" MasterPageFile="~/MasterPage.master" Title="Untitled Page" %>
<asp:Content ID="Content1" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server">
<asp:SqlDataSource ID="SqlDataSource1" runat="server" ConnectionString="<%$ ConnectionStrings:DevConnectionString1 %>"
SelectCommand="	SELECT dbo.DERIVATIVES.DERIVATIVE_ID, count(*) AS Matches
	FROM dbo.MAKES INNER JOIN
				 dbo.MODELS ON dbo.MAKES.MAKE_ID = dbo.MODELS.MAKE_ID INNER JOIN
				 dbo.DERIVATIVES ON dbo.MODELS.MODEL_ID = dbo.DERIVATIVES.MODEL_ID INNER JOIN
				 dbo.[VALUES] ON dbo.DERIVATIVES.DERIVATIVE_ID = dbo.[VALUES].DERIVATIVE_ID INNER JOIN
				 dbo.ATTRIBUTES ON dbo.[VALUES].ATTRIBUTE_ID = dbo.ATTRIBUTES.ATTRIBUTE_ID
	WHERE ((ATTRIBUTES.ATTRIBUTE_ID = @ATT_ID1 and (@VAL1 is null or VALUE = @VAL1)) or
		 (ATTRIBUTES.ATTRIBUTE_ID = @ATT_ID2 and (@VAL2 is null or VALUE = @VAL2)) or
		 (ATTRIBUTES.ATTRIBUTE_ID = @ATT_ID3 and (@VAL3 is null or VALUE = @VAL3)) or
		 (ATTRIBUTES.ATTRIBUTE_ID = @ATT_ID4 and (@VAL4 is null or VALUE = @VAL4)) )
	GROUP BY dbo.DERIVATIVES.DERIVATIVE_ID
	HAVING count(*) >= CASE WHEN @VAL1 IS NOT NULL THEN 1 ELSE 0 END +
									 CASE WHEN @VAL2 IS NOT NULL THEN 1 ELSE 0 END +
									 CASE WHEN @VAL3 IS NOT NULL THEN 1 ELSE 0 END +
									 CASE WHEN @VAL4 IS NOT NULL THEN 1 ELSE 0 END -2
	ORDER BY count(*) DESC
">
<SelectParameters>
<asp:ControlParameter ControlID="DropDownList1" Name="ATT_ID1" PropertyName="SelectedValue" />
<asp:ControlParameter ControlID="TextBox1" Name="VAL1" PropertyName="Text" />
<asp:Parameter Name="ATT_ID2" />
<asp:Parameter Name="VAL2" />
<asp:Parameter Name="ATT_ID3" />
<asp:Parameter Name="VAL3" />
<asp:Parameter Name="ATT_ID4" />
<asp:Parameter Name="VAL4" />
</SelectParameters>
</asp:SqlDataSource>
<asp:SqlDataSource ID="SqlDataSource2" runat="server" ConnectionString="<%$ ConnectionStrings:DevConnectionString1 %>"
SelectCommand="SELECT * FROM [ATTRIBUTES]"></asp:SqlDataSource>
<br />
<asp:DropDownList ID="DropDownList1" runat="server" DataSourceID="SqlDataSource2"
DataTextField="ATTRIBUTE_NAME" DataValueField="ATTRIBUTE_ID">
</asp:DropDownList>
<asp:TextBox ID="TextBox1" runat="server" AutoPostBack="True"></asp:TextBox><br />
<br />
<br />
<asp:GridView ID="GridView1" runat="server" AutoGenerateColumns="False" DataKeyNames="DERIVATIVE_ID"
DataSourceID="SqlDataSource1">
<Columns>
<asp:BoundField DataField="DERIVATIVE_ID" HeaderText="DERIVATIVE_ID" InsertVisible="False"
ReadOnly="True" SortExpression="DERIVATIVE_ID" />
<asp:BoundField DataField="Matches" HeaderText="Matches" ReadOnly="True" SortExpression="Matches" />
</Columns>
</asp:GridView>
</asp:Content>
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Am i not submitting the data correctly? (It worked with a simple query...just not with this one). I have tried a stored procedure which works when testing just not when its live on a webpage.
Please help!

(Visual Web Devleoper 2005 Express and SQL Server Management Studio Express)

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• We try to reinstall the MDS feature

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At line 28 udpMetadataEntityGetDetailsXML is calling udfMetadataEntityGetDetailsXML … and here is where we stopped

** Error found when try to get data from a entity using Excel add-in **
===================================
Sequence contains no elements
------------------------------
Program Location:
at Microsoft.MasterDataServices.AsyncEssentials.AsyncResultBase.EndInvoke()
at Microsoft.MasterDataServices.ExcelAddInCore.AsyncProviderBase`1.EndOperation(IAsyncResult ar)

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go
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begin

set @where = 'some where'

end

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Thanks,

Maurício

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USE [Northwind]

GO

/****** Object: StoredProcedure [dbo].[SalesByCategory] Script Date: 03/25/2008 08:31:09 ******/

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

CREATE PROCEDURE [dbo].[SalesByCategory]

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AS

IF @OrdYear != '1996' AND @OrdYear != '1997' AND @OrdYear != '1998'

BEGIN

SELECT @OrdYear = '1998'

END

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FROM [Order Details] OD, Orders O, Products P, Categories C

WHERE OD.OrderID = O.OrderID

AND OD.ProductID = P.ProductID

AND P.CategoryID = C.CategoryID

AND C.CategoryName = @CategoryName

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////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
From an ADO.NET 2.0 book, I copied the code of ConnectionPoolingForm to my VB 2005 Express. The following is part of the code:

Imports System.Collections.Generic

Imports System.ComponentModel

Imports System.Drawing

Imports System.Text

Imports System.Windows.Forms

Imports System.Data

Imports System.Data.SqlClient

Imports System.Data.Common

Imports System.Diagnostics

Public Class ConnectionPoolingForm

Dim _ProviderFactory As DbProviderFactory = SqlClientFactory.Instance

Public Sub New()

' This call is required by the Windows Form Designer.

InitializeComponent()

' Add any initialization after the InitializeComponent() call.

'Force app to be available for SqlClient perf counting

Using cn As New SqlConnection()

End Using

InitializeMinSize()

InitializePerfCounters()

End Sub

Sub InitializeMinSize()

Me.MinimumSize = Me.Size

End Sub

Dim _SelectedConnection As DbConnection = Nothing

Sub lstConnections_SelectedIndexChanged(ByVal sender As Object, ByVal e As EventArgs) Handles lstConnections.SelectedIndexChanged

_SelectedConnection = DirectCast(lstConnections.SelectedItem, DbConnection)

EnableOrDisableButtons(_SelectedConnection)

End Sub

Sub DisableAllButtons()

btnAdd.Enabled = False

btnOpen.Enabled = False

btnQuery.Enabled = False

btnClose.Enabled = False

btnRemove.Enabled = False

btnClearPool.Enabled = False

btnClearAllPools.Enabled = False

End Sub

Sub EnableOrDisableButtons(ByVal cn As DbConnection)

btnAdd.Enabled = True

If cn Is Nothing Then

btnOpen.Enabled = False

btnQuery.Enabled = False

btnClose.Enabled = False

btnRemove.Enabled = False

btnClearPool.Enabled = False

Else

Dim connectionState As ConnectionState = cn.State

btnOpen.Enabled = (connectionState = connectionState.Closed)

btnQuery.Enabled = (connectionState = connectionState.Open)

btnClose.Enabled = btnQuery.Enabled

btnRemove.Enabled = True

If Not (TryCast(cn, SqlConnection) Is Nothing) Then

btnClearPool.Enabled = True

End If

End If

btnClearAllPools.Enabled = True

End Sub

Sub StartWaitUI()

Me.Cursor = Cursors.WaitCursor

DisableAllButtons()

End Sub

Sub EndWaitUI()

Me.Cursor = Cursors.Default

EnableOrDisableButtons(_SelectedConnection)

End Sub

Sub SetStatus(ByVal NewStatus As String)

RefreshPerfCounters()

Me.statusStrip.Items(0).Text = NewStatus

End Sub

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Dim strConn As String = txtConnectionString.Text

Dim bldr As DbConnectionStringBuilder = _ProviderFactory.CreateConnectionStringBuilder()

Try

bldr.ConnectionString = strConn

Catch ex As Exception

MessageBox.Show(ex.Message, "Invalid connection string for " + bldr.GetType().Name, MessageBoxButtons.OK, MessageBoxIcon.Error)

Return

End Try

Dim dlg As New ConnectionStringBuilderDialog()

If dlg.EditConnectionString(_ProviderFactory, bldr) = System.Windows.Forms.DialogResult.OK Then

txtConnectionString.Text = dlg.ConnectionString

SetStatus("Ready")

Else

SetStatus("Operation cancelled")

End If

End Sub

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Dim strErrorMessage As String = ""

Dim strErrorCaption As String = "Connection attempt failed"

StartWaitUI()

Try

Dim cn As DbConnection = _ProviderFactory.CreateConnection()

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cn.Open()

lstConnections.SelectedIndex = lstConnections.Items.Add(cn)

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blnError = True

strErrorMessage = ex.Message

End Try

EndWaitUI()

If blnError Then

SetStatus(strErrorCaption)

MessageBox.Show(strErrorMessage, strErrorCaption, MessageBoxButtons.OK, MessageBoxIcon.Error)

Else

SetStatus("Connection opened succesfully")

End If

End Sub

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StartWaitUI()

Try

_SelectedConnection.Open()

EnableOrDisableButtons(_SelectedConnection)

SetStatus("Connection opened succesfully")

EndWaitUI()

Catch ex As Exception

EndWaitUI()

Dim strErrorCaption As String = "Connection attempt failed"

SetStatus(strErrorCaption)

MessageBox.Show(ex.Message, strErrorCaption, MessageBoxButtons.OK, MessageBoxIcon.Error)

End Try

End Sub

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Me.Cursor = Cursors.WaitCursor

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Try

Dim cmd As DbCommand = _SelectedConnection.CreateCommand()

cmd.CommandText = queryDialog.txtQuery.Text

Using rdr As DbDataReader = cmd.ExecuteReader()

If rdr.HasRows Then

Dim resultsForm As New QueryResultsForm()

resultsForm.ShowResults(cmd.CommandText, rdr)

SetStatus(String.Format("Query returned {0} row(s)", resultsForm.RowsReturned))

Else

SetStatus(String.Format("Query affected {0} row(s)", rdr.RecordsAffected))

End If

Me.Cursor = Cursors.Default

EnableOrDisableButtons(_SelectedConnection)

End Using

Catch ex As Exception

Me.Cursor = Cursors.Default

EnableOrDisableButtons(_SelectedConnection)

Dim strErrorCaption As String = "Query attempt failed"

SetStatus(strErrorCaption)

MessageBox.Show(ex.Message, strErrorCaption, MessageBoxButtons.OK, MessageBoxIcon.Error)

End Try

Else

SetStatus("Operation cancelled")

End If

End Sub
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
I executed the code successfully and I got a box which asked for "Enter the query string".
I typed in the following: EXEC dbo.SalesByCategory @Seafood. I got the following box: Query attempt failed. Must declare the scalar variable "@Seafood". I am learning how to enter the string for the "SQL query programed in the subQuery_Click(ByVal sender As Object, ByVal e As EventArgs) Handles btnQuery.Click" (see the code statements listed above). Please help and tell me what I missed and what I should put into the query string to get the information of the "Seafood" category out.

Thanks in advance,
Scott Chang

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