In yet another entry in my series on what you should be doing in Power BI Copilot AI Instructions, in this post I want to ...

A blog about Microsoft Fabric, Power BI, SQL Server Analysis Services (Multidimensional and Tabular), MDX, DAX, Power Pivot, Power Query and Excel for BI ...

One of the most common errors you’ll see when working with Power Query in Power BI or Excel is this: Expression.Error: The key didn’t match any rows in the table It can occur with almos… ...

There are a lot of articles and blog posts out there on how to handle OAuth2 authentication when connecting to REST APIs from Power Query in Power BI. However there is also a lot of confusion and ...

In the last two posts in this series I showed how removing columns from the tables used in a Power Query merge operation can improve refresh performance. In this post I’ll show you a differen… ...

If you missed out on the big announcement last week about Tabular Model Definition Language and the future of Power BI version control at SQLBits last week, then the recording of the session has al… ...

For any Power BI person, Direct Lake mode is the killer feature of Fabric. Import mode report performance (or near enough) direct on data from the lake, with none of the waiting around for data to ...

If you’re working with large amounts of data in Power BI you may find that you have problems because: Your pbix file is very large You spend a long time waiting for refreshes to finish in Pow… ...

You probably know that semantic models in Power BI can use a fixed amount of memory. This is true of all types of semantic model – Import, Direct Lake and DirectQuery – but it’s not something you ...

At the end of last year two new, fairly minor, improvements were made to Excel VBA’s support for Power Query: you can now refresh and delete individual Power Query queries. These methods are … ...

[Update September 2023: now that Power BI is part of Microsoft Fabric, the new features of Fabric make it much easier to solve this problem as described here] Power BI incremental refresh is a very ...