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Returning Error Messages As Well As Results In Power Query
Back in September I wrote a post on handling situations where the data source for your Power Query query was unavailable. The great thing about that technique is that instead of seeing an error message...
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Combining Data From Multiple Excel Workbooks With Power Query–The Easy Way!
If there’s one feature of Power Query that’s guaranteed to get Excel users very, very excited indeed it’s the ability to combine data from multiple workbooks into a single table. The bad news is that...
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Power Query Now Works With SSAS
I normally don’t bother blogging when one of the Power Query monthly updates gets released – the posts on the Power BI blog have all the details and there’s nothing more to add. This month’s update,...
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Specifying Allowed Values, Sample Values and Descriptions For Function...
The other day when I was thinking about Power Query functions (as you do) it occurred to me that they would be a lot more usable if, when you invoked them, you could show your users a dropdown box for...
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New Power Query Videos Live
I have recorded two new videos for Project Botticelli about Power Query that are now available to view. They are: What Is Power Query? This is short introduction to Power Query is free to view...
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Specifying Allowed Values, Sample Values and Descriptions For Function...
In part 1 of this series I showed how you can set properties for Power Query function parameters so that saw a description, an example value and a dropdown list containing allowed values when they...
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Power Query And Function Parameters Of Type List
Here’s something interesting that I just discovered about how Power Query deals with function parameters of type list… Imagine you have the following table in an Excel worksheet, and a Power Query...
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Reading The Power Query Trace File–With Power Query
In the September 2014 update of Power Query a new piece of functionality was added: the ability to turn on tracing. There’s no documentation about what the trace files actually contain anywhere (it’s...
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Viewing Error Messages For All Rows In Power Query
One of the great features of Power Query is the way you can view any rows that contain error values when you load data. However, even if you can see the rows that have errors you can’t see the error...
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Multiselect, Filtering And Functions In Power Query
If you’re a Power Query enthusiast you’re probably already comfortable with creating functions and passing values to them. However in some scenarios you don’t want to pass just a single value to a...
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A Closer Look At Power Query/SSAS Integration
In the November release of Power Query the most exciting new feature was the ability to connect to SSAS. I blogged about it at the time, but having used it for a month or so now I thought it was worth...
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Rendering Images In An Excel Worksheet With Power Query Using Cells As Pixels
It’s a general rule of the internet that, whenever you have a cool idea, a few minutes spent on your favourite search engine reveals that someone else has had the idea before you. In my case, when I...
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Expression.Evaluate() In Power Query/M
A year ago I wrote a post on loading the M code for a Power Query query from a text file using the Expression.Evaluate() function, but I admit that at the time I didn’t understand how it worked...
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Handling Added Or Missing Columns In Power Query
A recent conversation in the comments of this blog post brought up the subject of how to handle columns that have either been removed from or added to a data source in Power Query. Anyone who has...
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Using Excel Slicers To Pass Parameters To Power Query Queries
Power Query is great for filtering data before it gets loaded into Excel, and when you do that you often need to provide a friendly way for end users to choose what data gets loaded exactly. I showed a...
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What’s New In The Excel 2016 Preview For BI?
Following on from my recent post on Power BI and Excel 2016 news, here are some more details about the new BI-related features in the Excel 2016 Preview. Remember that more BI-related features may...
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Benford’s Law And Power Query
Probably my favourite session at SQLBits the other week was Professor Mark Whitehorn on exploiting exotic patterns in data. One of the things he talked about was Benford’s Law, something I first heard...
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Analysing SSAS Extended Event Data With Power Query: Part 1
The other day, while I was reading this post by Melissa Coates, I was reminded of the existence of extended events in SSAS. I say ‘reminded’ because although this is a subject I’ve blogged about...
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Building A Reporting Solution Using Power Query
The video of my SQLBits conference session “Building a reporting solution using Power Query” is now available to view (for free) on the SQLBits website:...
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Power Query Announcements At The PASS BA Conference
There were a couple of big (well, big if you’re a Power Query fan like me) announcements made today by Miguel Llopis at the PASS BA Conference: Today Power Query is available only to people who have...
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