Strange difference between SQL from .Net and SQL within stored proc

Hi, I am trying to fill a DataGrid with random records from my database. It thought I had found a way to randomly select records using SQL. So I built a stored procedure in Access and sure enough, it returns a random set of records.

Whe I tried to call this from my app, it kept returning the same set of records. So I copied and pasted the SQL into the app (code below) but it made no difference. Could anyone tell me why this wouldn't work?

<%@ Page Language="VB" ContentType="text/html" ResponseEncoding="iso-8859-1" %>
<%@ Import Namespace="System.Data" %>
<%@ Import Namespace="System.Data.OleDB" %>

<script runat="server">
Public objConn as new OleDbConnection (System.Configuration.ConfigurationSettings.AppSettings("ConnectionString"))

Sub GetTeam(s as Object, E as EventArgs)
 Dim objCmd As New OleDbCommand("SELECT TOP 4 PlayerID FROM tblPlayers WHERE PositionID='defender' ORDER BY rnd(isnull(PlayerID)*0+1);", objConn)
   dgDef.DataSource = objCmd.ExecuteReader
 Catch ex as OleDbException
   throw ex
 End try

End Sub

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "">
<html xmlns="">
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Untitled Document</title>
<style type="text/css">
.style1 {font-weight: bold}
<form runat="server">
    <asp:Button ID="btn33" runat="server" OnClick="GetTeam" Text="Get Defenders" />
  <table width="100%" border="0" cellspacing="10" cellpadding="0">
          <asp:DataGrid runat="server" ID="dgDef" EnableViewState="false" />       

4/18/2006 11:36:33 AM 16182 articles. 0 followers. Follow

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Have you tried: "SELECT TOP 4 PlayerID FROM tblPlayers WHERE PositionID='defender' ORDER BY newid()".

This seems to work pretty good and I have found sites on the web that discuss using newid() versus rnd()Idea [Idea] (Such as MSDN).

4/18/2006 3:37:42 PM

Yeah, I had seen the NewID option in my web searches on the problem - tried it but came up with the following error:

Undefined function 'newid' in expression.

Any ideas where to go from there?



4/18/2006 6:55:01 PM

Are you using an Access Project? If so, what was your query this time?  What version of SQL Server are you using? OS?

4/19/2006 1:13:51 PM

Sorry, that is the whole query.


I'm just using Access as my DB for my ASP.Net website. I build what Access calls 'Queries' and use them like Stored Procedures from my .Net pages.

OS WinXP Pro

Access 2000

4/19/2006 7:35:41 PM

Well,  Access as a data store is a whole new ballgame and not my cup of tea.  I use it only as a thin client.  I'm sorry. I was confused by 'Stored Procedures'.  That makes newId() useless.

Try looking here  This seems a bit ridiculous, but so is everything else in Access (For someone familiar with SQL2000)

My guess is that you are not setting the seed value for the random function.  This would casue the same order every time you run the query (computers compute a random number.  Therefore, if the seed is the same, you will get the same 'random' output every time!)  Try seeing if you can set the seed value.

Hope this helps.

4/19/2006 8:24:40 PM

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