Microsoft KB Archive/920974

= FIX: SQL Server 2005 treats an identity column in a view as an ordinary int column when the compatibility level of the database is set to 80 =

Article ID: 920974

Article Last Modified on 11/20/2007

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APPLIES TO


 * Microsoft SQL Server 2005 Developer Edition
 * Microsoft SQL Server 2005 Enterprise Edition
 * Microsoft SQL Server 2005 Enterprise Edition for Itanium-based Systems
 * Microsoft SQL Server 2005 Enterprise X64 Edition
 * Microsoft SQL Server 2005 Standard X64 Edition
 * Microsoft SQL Server 2005 Standard Edition

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Bug: #910 (SQL Hotfix)



Microsoft distributes Microsoft SQL Server 2005 fixes as one downloadable file. Because the fixes are cumulative, each new release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2005 fix release.



SUMMARY
This article describes the following about this hotfix release:
 * The issues that are fixed by this hotfix package
 * The prerequisites for applying the hotfix package
 * Information about whether you must restart the computer after you apply the hotfix package
 * Information about whether the hotfix package is replaced by any other hotfix package
 * Information about whether you must make any registry changes after you apply the hotfix package
 * The files that are contained in the hotfix package



SYMPTOMS
Consider the following scenario. You have a database in SQL Server 2005. You set the compatibility level of the database to 80. You have an existing view or you create a view in the database. The view meets the following requirements:
 * The view is created on two tables in the database.
 * The view includes an identity column from one of the tables.

In this scenario, SQL Server 2005 only treats the identity column in the view as an ordinary int column. However, if you have the same view in Microsoft SQL Server 2000, SQL Server 2000 treats the column as the identity column.

To verify this problem in SQL Server 2005, you can query the is_identity column in the sys.columns catalog view against the identity column in the view. Notice that SQL Server 2005 returns the value 0 for the identity column in the view.

The compatibility level of the database in SQL Server 2005 may also be set to 80 in the following cases:
 * You upgrade an existing SQL Server 2000 database to SQL Server 2005. The SQL Server 2000 database will have the compatibility level of 80 in SQL Server 2005.
 * You detach a database from SQL Server 2000 and then attach the database to SQL Server 2005. The database will have the compatibility level of 80 in SQL Server 2005.



CAUSE
This problem occurs because SQL Server 2005 treats the identity column of the view as an int column. This problem occurs even after you set the compatibility level of the database to 80 (SQL Server 2000).



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 have Microsoft SQL Server 2005 Service Pack 1 (SP1) installed to apply this hotfix.

For more information about how to obtain SQL Server 2005 Service Pack 1, click the following article number to view the article in the Microsoft Knowledge Base:

913089 How to obtain the latest service pack for SQL Server 2005

Restart information
You do not have to restart the computer after you apply this hotfix.

Registry information
You do not have change the registry.

Hotfix file information
This hotfix contains only those files that are required to correct the issues that this article lists. This hotfix may not contain of all the files that you must have to fully update a product to the latest build.

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.

SQL Server 2005, Itanium architecture version


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
To change the behavior in SQL Server 2005 after you apply this hotfix, you must perform one of the following actions:
 * If the view in the database is not created by using the WITH SCHEMABINDING option, you must run the sp_refreshview stored procedure on the view.
 * If the view in the database is created by using the WITH SCHEMABINDING option, you must drop the view first. Then, re-create the view.

After you do this, SQL Server 2005 treats the identity column in the view the same as SQL Server 2000 for any existing views.

For any newly created views after you apply the hotfix, SQL Server 2005 treats the identity column in the view the same as SQL Server 2000. Additionally, if you attach a SQL Server 2000-based database, the views in the attached database are also treated the same as SQL Server 2000.

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

http://msdn2.microsoft.com/en-us/library/ms187821.aspx

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

Additional query words: SqlDataAdapter IsIdentity view table identity

Keywords: kbtshoot kbqfe kbpubtypekc kbhotfixserver kbsql2005engine KB920974

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