FIX: An MDX query returns an incorrect result when you run the query by using a clean cache in SSAS 2008

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Article ID: 981838 - View products that this article applies to.
Microsoft distributes Microsoft SQL Server 2008 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 2008 fix release.
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SYMPTOMS

In Microsoft SQL Server 2008 Analysis Services (SSAS 2008), you run a Multidimensional Expressions (MDX) query. When you use a clean cache to run this query, it returns an incorrect result.

Notes
  • Consider the following scenario. You run another query that uses the same cache and that returns a correct result. Then, you run the original query again. In this scenario, you receive the correct result.
  • The issue occurs when a subspace is evaluated in cell-by-cell mode and when there are multiple overlapping cell calculations together with conditions.

RESOLUTION

The fix for this issue was first released in Cumulative Update 8 for SQL Server 2008 Service Pack 1. For more information about this cumulative update package, click the following article number to view the article in the Microsoft Knowledge Base:
981702 Cumulative update package 8 for SQL Server 2008 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 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:
970365 The SQL Server 2008 builds that were released after SQL Server 2008 Service Pack 1 was released
Microsoft SQL Server 2008 hotfixes are created for specific SQL Server service packs. You must apply a SQL Server 2008 Service Pack 1 hotfix to an installation of SQL Server 2008 Service Pack 1. By default, any hotfix that is provided in a SQL Server service pack is included in the next SQL Server service pack.

STATUS

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

REFERENCES

For more information about subspace and about cell-by-cell mode, see the "MDX Query Performance: Block Computation" section on the following Microsoft TechNet Web site:
Introduction to new data warehouse scalability features in SQL Server 2008
For information about the Incremental Servicing Model for SQL Server, click the following article number to view the article in the Microsoft Knowledge Base:
935897 An Incremental Servicing Model is available from the SQL Server team to deliver hotfixes for reported problems
For more information about the naming schema for SQL Server updates, click the following article number to view the article in the Microsoft Knowledge Base:
822499 New naming schema for Microsoft SQL Server software update packages
For more information about software update terminology, 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

Properties

Article ID: 981838 - Last Review: October 6, 2011 - Revision: 2.0
APPLIES TO
  • Microsoft SQL Server 2008 Analysis Services
Keywords: 
kbexpertiseadvanced kbsurveynew kbfix kbqfe KB981838

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