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Custom Groups in Excel 2007 – Error

July 11th, 2011

I just finished digging around a particular issue with Excel 2007 (some versions) and SSAS Pivot Tables. In brief, the issue was that a user could not use the custom groups functionality which Excel provides because she got an error saying:

“The query did not run, or the database table could not be opened. Check the database server or contact your administrator. Make sure the external database is available and hasn’t been moved or reorganized, then try the operation again.”

I added her to the server administrators, but the message persisted. After profiling I noticed that the MDX generated by Excel 2007 for this operation read:

CREATE SESSION CUBE [Cube_XL_GROUPING0] FROM [Cube] ( DIMENSION [Cube].[Agency].[Agency Hierarchy] HIDDEN AS _XL_GROUPING0,DIMENSION [Cube].[Agency].[Flag],DIMENSION [Cube].[Agency].[Region],DIMENSION [Cube].[Collection].[Application],DIMENSION [Cube].[Collection].[Application Code],DIMENSION [Cube].[Collection].[Data Collection Code],DIMENSION [Cube].[Data...

Error: "Parser: The syntax for 'DIMENSION' is incorrect."

I have highlighted the problematic part - the MEASURE part of this expression was missing. A correct MDX statement issued by another instance of Excel 2007 running on a different machine showed:

CREATE SESSION CUBE [Cube_XL_GROUPING1] FROM [Cube] ( MEASURE [Cube].[Value - Data Integer Quarter] HIDDEN,MEASURE [Cube].[Value - Data Integer Semi] HIDDEN,MEASURE [Cube].[Value - Data Integer Annual] HIDDEN,MEASURE [Cube].[Value - Data Integer Month] HIDDEN,MEASURE [Cube].[Value - Data Real Quarter] HIDDEN,MEASURE [Cube].[Value - Data Real Month] HIDDEN,MEASURE [Cube].[Value - Data Real Annual] HIDDEN,MEASURE [Cube].[Value - Data Money Semi] HIDDEN,MEASURE [Cube].[Value - Data Money Month] HIDDEN,MEASURE [Cube].[Value - Data Real Semi] HIDDEN,MEASURE [Cube].[Value - Data Money Quarter] HIDDEN,MEASURE [Cube].[Value - Data Money Annual] HIDDEN,DIMENSION [Cube].[Agency].[Agency Hierarchy] HIDDEN AS _XL_GROUPING0,DIMENSION [Cube].[Agency].[Pub Pte Flag],DIMENSION [Cube].[Agency].[Region],DIMENSION [Cube].[Collection].[Application],DIMENSION [Cube].[Collection].[Application Code],DIMENSION [Cube].[Collection].[Collection Code],DIMENSION [Cube].[Element].[Common Name],DIMENSION [Cube].[Element].[Data Element Code],DIME…
Here we have the cube measures as a part of the CREATE SESSION CUBE statement and this makes it a valid one. The reason for this seems to be the fact that all the physical measures in the cube were hidden and only one calculated measure was shown to the users. Excel (2007 Enterprise) seemed unable to find them, so the fix was easy – creating a visible dummy physical measure and using a scope assignment to make it work like the calculated one. Now Excel merrily creates valid MDX and my user is happy.

I understand this will be a very rare problem, but it takes some time to investigate, so I hope the post may help someone out there.

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