Blog

Q&A in Power BI Desktop - Regular readers of my blog probably get sick of hearing me rave about the latest new thing in Power BI.  This month there is an absolute cracker – Q&A in Power BI Desktop.  In case you don’t know, Q&A is a natural language query tool that allows you to ask a question about your data […]
Virtual Filters Using TREATAS - Level: Intermediate I have been aware of the TREATAS function for a very long time.  I have tried to understand how it works a few times but could never really work it out. I think part of the problem is the function name TREATAS is not very descriptive.  To contrast this point, the FILTER function […]
Line Chart Conditional Formatting - I’m really pleased and excited to introduce you to Daniil Maslyuk (Twitter: @DMaslyuk).  I first met Daniil about a year ago (originally via email) as he was preparing to move to Australia.  Daniil made the plunge shortly there after and migrated to Australia (from Russia) – he now works as a Power BI consultant for Agile BI here in […]
Pass an Excel Parameter to Power Query - Where has Matt been? Regular readers of my blog may have noticed I have been missing in action over the last month.  I have been super busy with the PUG World Tour, delivering a lot of training, finalising my new book Supercharge Power BI, and also taking a couple of weeks vacation. Side Story: Power […]
Killer Tips to Write Harder Measures - Level: Intermediate Background I was reading the questions at http://community.powerbi.com today and saw an interesting question.  In short the OP wanted to know if there was a way to identify (via a measure) if the row in a table had a colour =”Blue”, but also to check that there were no other rows with the […]
DAX UNICHAR Function in Power BI - I first learnt about the new DAX UNICHAR function in Power BI by reading Chris Webb’s blog (which was also the inspiration for this article today).  One of the uses of the UNICHAR function is to be able to include non text characters inside visuals.  When you combine a logical set of these codes (icon sets) you […]
Conditional Formatting in Power BI - Level: Beginners I blogged on conditional formatting in Power BI Table visual here when it was released in the May 2016 Power BI Desktop update. At the time of first release, the conditional formatting was pretty basic with only 1 formatting option available. Over time, Microsoft has improved this feature, and now, it is available in both Table and […]
Using Variables in DAX - Level: Intermediate The variable feature in DAX has been around for more than a year and I have simply never got around to writing an article about it – I am changing that today.  Let me start off with some version information and syntax and then I will show you are real life example where I […]
Power BI Accounting Format of Dollars - Level: Beginners As I often say, sometimes it is the little things that can make a big different for some people – in this case Accountants. I was teaching a Power BI class a few weeks ago and I was discussing how the number formatting options work in Power BI.  One of my students (Sheldon) […]
How To Solve a Complex DAX Problem - Level: Advanced I was helping someone on Power Pivot Forum last week with a tricky calculated column question.  As an aside, you may know that I always advise beginners to keep away from calculated columns.  You mostly don’t need calculated columns because in most circumstances a measure is a better option to use (read more […]
New Functions – GENERATESERIES, SELECTEDVALUE - Level: Beginners/Intermediate In the August 2017 update of Power BI Desktop Microsoft released the new What If feature (first demonstrated at MDIS in July).  This new What If capability uses two new DAX functions to complete a task that you have always been able to do manually.  You still can of course still do it […]
What is DAX - I have written a series of articles over the last few years including: What is Power Pivot What is Power Query What is Power BI But I have never written an article about the DAX language, so I thought I would cover this off today. What is DAX? DAX is an acronym for Data Analysis […]
Measure Dependencies in Power BI - Update:  Unfortunately after I released the latest version of my workbook in this article, something changed with Excel to stop the file working as designed.  At this stage I do not know what the issue is, but it seems to only affect the current channel versions of Excel.  I have just reinstalled the deferred channel […]
DMV to Extract Measures from Power Pivot - I have written articles before about how you can extract measures from a data model using DAX Studio and also using Power Pivot Utilities.  These are both excellent tools in their own right and I encourage you to read up on those previous articles to learn more about these tools. Today however I am going […]
Happy Second Birthday Power BI - The 24th of July, 2017 is the second birthday for Power BI.  I thought I would take the occasion of its second birthday to reflect on all the great work that the crack Power BI team at Microsoft has done over the last year.   I think it would be a tough job working in […]
When to Use SUM() vs SUMX() - Level: Beginners/Intermediate It has been 2 years since I first wrote an article about SUM() vs SUMX().  I decided to write a new article to refresh this topic and add in the things I have learnt over the last 2 years. SUM() vs SUMX() First let me start with an overview of both of these […]
The ALL() Function in DAX - Level: Intermediate In this article I am going to write about the ALL() function, show how it works and explain a common use case.  I will also cover the unexpected behaviour that occurs when using the ALL() function in Power BI Desktop – more on that later. For this article I will use my simplified copy […]
Understanding Power Query Combine - Level: Intermediate Sometime late in 2016 Microsoft deployed a new “Combine” feature in both Power Query for Excel (Get and Transform) and also in Power BI Desktop (Get Data).  The new capability makes it easier to combine multiple copies of similar workbooks into a single table without hand coding M Functions, but unfortunately it is now […]
Power Pivot Crashes–Another Update from Seattle - When I was at the Microsoft Data Insights Summit last week I took the opportunity to catch up with Howie Dickerman to get an update on how the bug fixing with Power Pivot for Excel is coming along.  I talked about this in my original blog here and then my previous update here.   And the […]
My MDIS Presentations - Level: Beginners/Intermediate As those that read my blog regularly would know, I have been at the Microsoft Data Insights Summit in Seattle Washington for the last 2 days. I had the privilege and pleasure of presenting two sessions at the event. For those that were not able to attend, here are the videos of my […]

Ten Things I Wish I Knew When I Started With Power Pivot.   Learn  Without The Pain!

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