FIX: Clustered index is not used in the execution plan in SQL Server 2008 R2 if a query uses two or more partitions

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Article ID: 2624527 - View products that this article applies to.
Microsoft distributes Microsoft SQL Server 2008 R2 fixes as one downloadable file. Because the fixes are cumulative, each new release contains all the hotfixes and all the security updates that were included with the previous SQL Server 2008 R2 update release.
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SYMPTOMS

Consider the following scenario:
  • You create two or more partitions on a column of a table in Microsoft SQL Server 2008 R2.
  • You create a clustered index on a different column of the same table.
  • You run a query against the table. The query uses two or more of the partitions.

In this scenario, slow performance occurs, and a sort operation is used in the execution plan instead of the clustered index.

RESOLUTION

Cumulative update information

SQL Server 2008 R2

The fix for this issue was first released in cumulative update package 10. For more information about how to obtain this cumulative update package for SQL Server 2008 R2, click the following article number to view the article in the Microsoft Knowledge Base:
2591746 Cumulative update package 10 for SQL Server 2008 R2
Note Because the builds are cumulative, each new update release contains all the hotfixes and all the security updates that were included with the previous SQL Server 2008 R2 update release. We recommend that you consider applying the most recent update release that contains this hotfix. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
981356 The SQL Server 2008 R2 builds that were released after SQL Server 2008 R2 was released

SQL Server 2008 R2 Service Pack 1

The fix for this issue was first released in Cumulative Update 4 for SQL Server 2008 R2 Service Pack 1. For more information about how to obtain this cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
2633146 Cumulative Update package 4 for SQL Server 2008 R2 Service Pack 1
Note Because the builds are cumulative, each new fix release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2008 R2 fix release. We recommend that you consider applying the most recent fix release that contains this hotfix. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
2567616 The SQL Server 2008 R2 builds that were released after SQL Server 2008 R2 Service Pack 1 was released

STATUS

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

Properties

Article ID: 2624527 - Last Review: December 19, 2011 - Revision: 2.0
APPLIES TO
  • Microsoft SQL Server 2008 R2 Developer
  • Microsoft SQL Server 2008 R2 Enterprise
  • Microsoft SQL Server 2008 R2 Express
  • Microsoft SQL Server 2008 R2 Web
  • Microsoft SQL Server 2008 R2 Standard
  • Microsoft SQL Server 2008 R2 Workgroup
Keywords: 
kbqfe kbfix kbexpertiseadvanced kbsurveynew KB2624527

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