Microsoft KB Archive/916528

= FIX: Incorrect data is returned when you change the binding order of two similarly-named output parameters in an application that uses the ODBC driver in Windows XP Service Pack 2 =

Article ID: 916528

Article Last Modified on 11/15/2007

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APPLIES TO


 * Microsoft Windows XP Service Pack 2
 * Microsoft Data Access Components 2.8 Service Pack 1

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SYMPTOMS
Consider the following scenario:
 * You change the binding order of two similarly-named output parameters from a stored procedure in an application.
 * The application uses the Microsoft Data Access Components (MDAC) 2.8 Service Pack 1 (SP1) ODBC driver.
 * The application is running on a Microsoft Windows XP with Service Pack 2 (SP2)-based computer.

In this scenario, incorrect data is returned.

For example, assume that you have a stored procedure that returns parameter values that are named @a1 and @a. In the application that uses the ODBC driver, you bind to @a first and then bind to @a1. In this scenario, the values are returned correctly. However, if you bind to @a1 first and then bind to @a, the parameter values are returned incorrectly.

Note If the shorter of the parameter names is not contained in the other parameter name, the parameter values are always returned correctly. For example, the parameter values are returned correctly if you use @a and @b or if you use @a1 and @a2.



CAUSE
This problem occurs because there is an incorrect comparison of parameter names in the Microsoft SQL Server ODBC driver and in the SQL OLE DB provider.



RESOLUTION
A supported hotfix is now available from Microsoft. However, this hotfix is intended to correct only the problem that is described in this article. Apply this hotfix only to systems that are experiencing this specific problem. This hotfix might receive additional testing. Therefore, if you are not severely affected by this problem, we recommend that you wait for the next service pack that contains this hotfix.

To resolve this problem, submit a request to Microsoft Online Customer Services to obtain the hotfix. To submit an online request to obtain the hotfix, visit the following Microsoft Web site:

http://go.microsoft.com/?linkid=6294451

Note If additional issues occur or any troubleshooting is required, you might have to create a separate service request. The usual support costs will apply to additional support questions and issues that do not qualify for this specific hotfix. To create a separate service request, visit the following Microsoft Web site:

http://support.microsoft.com/contactus/?ws=support

Prerequisites
You must apply MDAC 2.8 SP1 and Windows XP SP2, before you apply this hotfix.

Restart requirement
You must restart the computer after you apply this hotfix.

Hotfix replacement information
This hotfix does not replace any other hotfixes.

File information
The English version of this hotfix has the file attributes (or later file attributes) that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). When you view the file information, it is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.



WORKAROUND
To work around this problem, rename the parameters so that one parameter name is not contained inside the other parameter name.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.



MORE INFORMATION
For more information, click the following article number to view the article in the Microsoft Knowledge Base:

824684 Description of the standard terminology that is used to describe Microsoft software updates

For more information about MDAC, visit the following Microsoft Developer Network (MSDN) Web site:

http://msdn2.microsoft.com/en-us/data/aa937729.aspx/

For more information about Windows XP SP2, visit the following Microsoft Web site:

http://www.microsoft.com/windowsxp/sp2/default.mspx

Additional query words: parameter stored procedure bind SQLBindParameter

Keywords: kbwinxppresp3fix kbfix kbbug kbhotfixserver kbqfe kbpubtypekc KB916528

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