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Chris Webb

Chris Webb is an independent consultant specialising in Analysis Services, MDX, PowerPivot and DAX. He is a co-author of "SQL Server Analysis Services 2012: The BISM Tabular Model", "Expert Cube Development with SQL Server 2008 Analysis Services", and "MDX Solutions with Microsoft SQL Server Analysis Services 2005 and Hyperion Essbase", and blogs at http://cwebbbi.wordpress.com/ 
http://cwebbbi.wordpress.com/ http://feeds.feedburner.com/wordpress/Cpjz

This session will show you how to build aggregations in Analysis Services 2008 that are useful for the queries you're actually running
Learn how the Analysis Services cache works, and how you can pre-load it with data to ensure optimal query performance.
Learn to tune Analysis Services 2008 query performance
This session will introduce the basic concepts of the new multidimensional calculation language, DAX, and show how to implement several common calculations in it
Learn about the most frequently made Analysis Services design mistakes, the problems they cause, and how to fix them or not make them in the first place
This session will introduce the concept of scoped assignments in MDX and show how they can be used to solve various calculation problems.
This session explains what the BI Semantic Model in SQL Server Denali is, how it is related to Analysis Services, and provides a brief introduction to the new Tabular model.
This session will cover advanced security topics in the Analysis Services Multidimensional model.
This session looks at the most significant new functionality to be added to SSAS Multidimensional in recent years: support for the DAX language and Power View.
An in-depth session on advanced Power Query functionality and the M language

Blog posts RSS

Counting Customers Who Have Bought All Selected Products 12 Sep 2014
Market basket analysis is a fairly well understood problem for SSAS – it’s best handled using many-to-many relationships, as shown in the excellent The Many-to-Many Revolution  white paper. However the other week I was asked a question that was an interesting variation on this problem, and ...

Power Pivot / Power Query Read-Only Connection Problems In Excel 2013 – And What To Do About Them 08 Sep 2014
Anyone who has tried to do any serious work with Power Pivot and Power Query will know about this problem: you use Power Query to load some tables into the Data Model in Excel 2013; you make some changes in the Power Pivot window; you then go back to Power Query, make some changes there […]

Create Your Own Relationships Between Tables In The Excel Data Model With Power Query 02 Sep 2014
You probably know that, when you are importing data from multiple tables in SQL Server into the Excel Data Model in Excel 2013 using Power Query, Power Query will automatically create relationships between those tables in the Data Model. But did you know that you can get Power Query to do this for ...

This Is My 1000th Blog Post 31 Aug 2014
Just a few months away from the tenth anniversary of my first post here, I’ve reached the milestone that is my 1000th blog post. If you’ve been with me since back then, thanks for reading! I have no idea how I managed to write so much – it’s an average of around two posts per […]

Power Query Functions That Return Functions 24 Aug 2014
You’re probably aware that, in Power Query, a query can return a function. So for example here’s a very simple query (so simple that no let statement is needed) called MultiplyTwoNumbers with the following definition: (x as number, y as number) => x * y It can be used on the ...