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Executing DBCC for SQL Server Analysis Services 2016

In the upcoming release of SQL Server Analysis Services 2016, one of the new features you’ll see is the ability to perform a database consistency check against your SSAS cubes and Tabular models. Just like in the database engine side of things, DBCC for SSAS checks for corruption across the entire database or individual objects within the database.

The DBCC command is shaped likes the XMLA Process command so there’s not a lot of complexity to it. Below here, you can see the basic syntax for the SSAS DBCC command. Its worthing noting that the syntax of the command will look the same whether you’re running it against an SSAS multidimensional database or Tabular model.

"http://schemas.microsoft.com/analysisservices/2003/engine">
    <Object>
        
        
        
        
    Object>

To run the DBCC command, just open a new MDX query window and use the code seen above. Enter in the IDs of your Database, cube, measure and/or partition.

When you’re running the DBCC command against a Tabular model, there are a couple things I’d like to point out.

In the element for the CubeID, you’ll need to specify the ID of the Model. And in the element for the MeasureGroupID, specify the ID for the table you want to check.

DBCC XMLA command for SSAS

If you want to check the whole database or model for consistency, simply remove the elements the lower elements. For example, if I wanted to check the whole model, I just would leave out the elements for MeasureGroupID and PartitionID.

To find the MeasureGroupID (Table ID) or PartitionID in a Tabular model, just navigate to the Properties for that object.

Find the SSAS Tabular MeasureGroup ID or Table ID

To find the Partition ID in a Tabular model, right click the table and select Partitions. Then highlight the partition you want to check and click the Settings icon.

Find the SSAS Tabular partition ID

If you run SQL Server Profiler against SSAS while executing the DBCC command, you can see the individual checking of the columns, tables, database and more.

SSAS Tabular Profiler trace DBCC

I also ran a trace against my SSAS 2016 OLAP instance to watch each segment of

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Thoughts on December 2013 Power Query Updates

  • 11 December 2013
  • Author: DevinKnight
  • Number of views: 2011
  • 0 Comments

Just in time for Christmas the Microsoft product teams responsible for Power BI have a slew of amazing updates.  The list of updates can be found here but for my notes specifically on Power Query updates continue reading!

Power Query

Power Query now has 3 new data sources that you can connect to.  Connectors have now been added for Sybase IQ, Exchange and Dynamics CRM Online.  Sybase IQ is the column-store database technology produced by SAP and is used for many organizations for BI solutions.  This is a great add for Microsoft to pull in competitors data sources. The addition of Exchange was a bit of a surprise to me at first but once I saw my first demo connecting to an Exchange email account I was pretty impressed what you could do with it.  Expect a blog post on this one soon.  Last, Dynamic CRM Online is likely to be very interesting to many organizations.  My company uses Dynamics and having the ability to easily pull data from it into a self service solution is a huge win.

Power Query can now automatically detects database relationships.  This functionality has existed in other Microsoft technologies including Power Pivot but now is available in Power Query too.

In the November release of Power Query the Query Editor ribbon was introduced.  Now the Query Editor ribbon has additional buttons for Fill Down, Sort Ascending/Descending and Number Transformations. The Fill Down function is a really cool M query function that I demoed in this whitepaper.

In addition to these, several new features have been added in regards to sharing organizational queries:

  • The Replace Shared query has been removed.
  • You can now Share your query from the Query fly-out
  • A new Certified button was added to the Search ribbon, enabling Search result to only show Certified results. 
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