FIX: Query that you run against a partitioned table returns incorrect results in SQL Server 2008, SQL Server 2008 R2 or SQL Server 2012

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Article ID: 2892741 - View products that this article applies to.
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Symptoms

Consider the following scenario:
  • You have a partitioned table in Microsoft SQL Server 2008, SQL Server 2008 R2, or Microsoft SQL Server 2012..
  • The table has a non-unique, nonclustered index in a descending order.
  • You run a query against the table. The query spans multiple partitions and requests an order.
In this scenario, the query returns incorrect results.

Cause

This issue occurs because SQL Server reverses partition ID ranges when a descending index is queried. Therefore, the correct order across the partitions is violated.

Resolution

The issue was first fixed in the following cumulative update of SQL Server. After you apply the fix, you have to enable trace flag 4199 to make the hotfix work.

Cumulative Update 8 for SQL Server 2012 SP1

Cumulative Update 11 for SQL Server 2012

Cumulative Update 10 for SQL Server 2008 R2 SP2

Cumulative Update 14 for SQL Server 2008 SP3

About cumulative updates for SQL Server

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Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
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Status

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

Properties

Article ID: 2892741 - Last Review: January 20, 2014 - Revision: 3.0
Applies to
  • Microsoft SQL Server 2008 Service Pack 3, when used with:
    • Microsoft SQL Server 2008 Developer
    • Microsoft SQL Server 2008 Enterprise
    • Microsoft SQL Server 2008 Standard
  • Microsoft SQL Server 2008 R2 Service Pack 2, when used with:
    • Microsoft SQL Server 2008 R2 Developer
    • Microsoft SQL Server 2008 R2 Enterprise
    • Microsoft SQL Server 2008 R2 Standard
  • Microsoft SQL Server 2012 Service Pack 1, when used with:
    • Microsoft SQL Server 2012 Developer
    • Microsoft SQL Server 2012 Enterprise
    • Microsoft SQL Server 2012 Standard
Keywords: 
kbqfe kbfix kbsurveynew kbexpertiseadvanced KB2892741

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