Video: Power BI Data Privacy Settings Deep Dive
Over the past year or so I’ve been delivering a presentation on the Power Query engine’s data privacy settings at various conferences and Power BI user groups, in an attempt to try to pull together all...
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Why Is Power BI Running My SQL Query Twice?
When you import data from a relational database like SQL Server in Power BI you have the option of entering your own SQL query to use as a starting point: Here’s the M code for a query that does this:...
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Adding Tooltips To Column Headers In The Power Query Editor In Power BI And...
Here’s something that will excite all you M nerds out there! Did you know you can make tooltips appear when you hover over column headers in a table in the Power Query Editor in either Power BI Desktop...
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Returning Annotations From OData Sources In Power BI/Power Query
The Power Query OData.Feed function has an option called IncludeAnnotations that allows you to return annotation values from an OData data source. It’s not obvious how to use it though – even if you...
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Power Query Geography And Geometry Functions In Power BI And Excel
In the August 2020 release of Power BI Desktop a couple of new Power Query functions were added: Geography.FromWellKnownText, Geography.ToWellKnownText, GeographyPoint.From,...
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Displaying Routes On A Map In Power BI
In last week’s post I described the new Power Query M functions for working with Well Known Text objects, and in a post a few weeks ago I showed how you can use the Icon Map custom visual to display...
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Optimising The Performance Of Power Query Merges In Power BI, Part 5: Cross...
In a late addition to the series of posts that I started here a few months ago, I thought it would be useful to look at how to optimise the performance of a rare (but nonetheless useful) type of...
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The M Behind The New Power Query Data Types In Excel
The big news this week – at least for me – was the release of the new Power Query data types to the Excel insiders channel. You can read all about it here:...
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Viewing Data Privacy Partition Information With Power Query Query Diagnostics
Back in May 2020 a new feature was added to Power BI’s Power Query Query Diagnostics functionality: the ability to view data privacy partition information. The announcement blog post has some basic...
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View Native Query Now Works For Analysis Services Data Sources
If you’re familiar with the topic of query folding in Power Query, you’ll know that the View Native Query right-click option in the Applied Steps pane of the Power Query Editor can be used to show the...
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A Function To Visualise Parallelism In Power Query Diagnostics Data
Most of the time I’ve spent looking at Power Query Query Diagnostics data, I’ve been looking at data for a single query. Over the past few days though I’ve spent some time investigating what this data...
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Why I’m Excited About Dynamic M Parameters In Power BI
My favourite feature in the October 2020 release of Power BI is undoubtedly dynamic M parameters. However, before I explain why, I’m going to put my hands up and admit that we screwed up the...
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Handling Multi-select In Power BI Dynamic M Parameters
Even though the documentation for dynamic M parameters does mention how to handle multi-select in the M code for your Power Query queries, I thought it would be useful to provide a detailed example of...
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Delaying Power BI Dataset Refresh Until The Source Data Is Ready
This week a customer came to me with the following problem: they had scheduled the refresh of their dataset but their source data wasn’t always ready in time, so the old data was being loaded by...
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Inlining KQL Query Fragments Using Value.NativeQuery() In Power Query
If the title wasn’t enough to warn you, this post is only going to be of interest to M ultra-geeks and people using Power BI with Azure Data Explorer – and I know there aren’t many people in either...
View ArticleHandling Multiple URL Query Parameters With The Same Name Using Web.Contents...
Some time ago I wrote a pair of popular posts about using the Query and RelativePath options of the Web.Contents function in Power Query and why they are important for dataset refresh. I have recently...
View ArticleNew Option To Solve Problems With Power Query Not Loading All Data From An...
Some interesting new Power Query functionality was released in the December release of Power BI Desktop (it’s also in the build of Excel I’m running) that didn’t get announced in the blog post but...
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Testing The Performance Of Importing Data From ADLSgen2 Common Data Model...
Following on from my last two posts comparing the performance of importing data from ADLSgen2 into Power BI using the ADLSgen2 connector and going via Synapse Serverless (see here and here), in this...
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Optimise The Performance Of Reading Data From ADLSgen2 In Power BI With The...
Last year Marco Russo wrote a very useful blog post pointing out the performance problems you can run into when connecting to data stored in ADLSgen2 from Power BI when there are a large number of...
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Query Folding On SQL Queries In Power Query Using Value.NativeQuery() and...
Here’s something that will Blow Your Mind if you’re a Power Query/M fan. Did you know that there’s a way you can get query folding to work if you’re using a native SQL query on SQL Server or Postgres...
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