Tutorials, deep dives and opinions on Microsoft Fabric and Power BI by Bas Land, Microsoft Data Platform MVP.https://thatfabricguy.com/enhttps://thatfabricguy.com/speaking-at-queensland-power-bi-fabric-user-group/https://thatfabricguy.com/speaking-at-queensland-power-bi-fabric-user-group/I presented a session on Fabric Lakehouses at the Queensland Power BI & Fabric User Group. This was a fun one, presenting literally from the other side of the world.Thu, 09 Apr 2026 10:02:37 GMTPublic SpeakinglakehousemedallionBas Landhttps://thatfabricguy.com/speaking-at-pbiug-italy-on-fabric-data-agents/https://thatfabricguy.com/speaking-at-pbiug-italy-on-fabric-data-agents/It is time to talk about AI some more! Seriously, Bas? Oh yeah! AI is all the rage, and Power BI and Fabric cannot be left behind.Wed, 08 Apr 2026 12:26:49 GMTPublic SpeakingAIdata agentsBas Landhttps://thatfabricguy.com/speaking-at-power-bi-gebruikersdagen-2026/https://thatfabricguy.com/speaking-at-power-bi-gebruikersdagen-2026/The yearly Power BI conference in Utrecht (Power BI Gebruikersdagen or ‘User Days’) are held in March, as per tradition. This edition I was invited to speak again, and I loved it.Fri, 06 Mar 2026 20:54:14 GMTPublic SpeakingBas Landhttps://thatfabricguy.com/speaking-at-cloud-tech-tallinn-2026/https://thatfabricguy.com/speaking-at-cloud-tech-tallinn-2026/This was my first time at Cloud Tech Tallinn (or CTTT as it’s called, why is there an extra “T”?).Fri, 30 Jan 2026 20:54:00 GMTPublic SpeakingBas Landhttps://thatfabricguy.com/speaking-at-data-community-day-austria-2026/https://thatfabricguy.com/speaking-at-data-community-day-austria-2026/In the beautiful city of Vienna a Data Community Day was held. I was invited to speak about my work around Fabric Data Agents.Fri, 23 Jan 2026 20:53:30 GMTPublic SpeakingBas Landhttps://thatfabricguy.com/delta-tables-in-microsoft-fabric-explained/https://thatfabricguy.com/delta-tables-in-microsoft-fabric-explained/Learn about delta tables in Microsoft Fabric. In this post I go into what delta is, why we use it, and what Fabric has to do with it.Thu, 15 Jan 2026 11:37:36 GMTData Engineeringdelta lakeBas Landhttps://thatfabricguy.com/microsoft-fabric-reserved-instance/https://thatfabricguy.com/microsoft-fabric-reserved-instance/Microsoft Fabric Reserved Instance is a way to save about 40% of money on Microsoft Fabric! Learn how you can save too with this article.Thu, 08 Jan 2026 11:40:51 GMTData ArchitecturecostsBas Landhttps://thatfabricguy.com/merging-dataframes-in-pyspark/https://thatfabricguy.com/merging-dataframes-in-pyspark/Today I’m going to teach you how the Python merge statement works, and we use it a lot in Microsoft Fabric.Thu, 01 Jan 2026 11:56:47 GMTData EngineeringnotebookspythonsparkBas Landhttps://thatfabricguy.com/sharing-microsoft-fabric-data-with-external-users/https://thatfabricguy.com/sharing-microsoft-fabric-data-with-external-users/With Microsoft Fabric, you can share data externally. In this article I will show you exactly how. And you can easily follow the YouTube tutorial.Thu, 25 Dec 2025 11:25:30 GMTData Architecturedata sharepower biBas Landhttps://thatfabricguy.com/fabric-capacity-metrics-app-is-useful-but-only-if-you-know-this/https://thatfabricguy.com/fabric-capacity-metrics-app-is-useful-but-only-if-you-know-this/Today I’ll be diving deep into the Fabric Capacity Metrics app. With this Power BI app, you can find out what items in your Fabric capacity are using a lot of compute resources, and you’ll use this…Thu, 18 Dec 2025 13:19:29 GMTAdministrationcostsperformanceBas Landhttps://thatfabricguy.com/using-power-bi-on-an-apple-watch/https://thatfabricguy.com/using-power-bi-on-an-apple-watch/Today we’re going to look at Power BI on the Apple Watch.Thu, 11 Dec 2025 13:22:58 GMTPower BIrandomBas Landhttps://thatfabricguy.com/microsoft-fabric-with-a-macbook/https://thatfabricguy.com/microsoft-fabric-with-a-macbook/Microsoft Fabric with a MacBook is certainly possible. I never use Windows, even though I'm always working on Microsoft products. See how!Thu, 04 Dec 2025 17:18:01 GMTData EngineeringdeveloperBas Landhttps://thatfabricguy.com/how-to-use-task-flows-in-microsoft-fabric/https://thatfabricguy.com/how-to-use-task-flows-in-microsoft-fabric/Today I want to talk about task flows inside Microsoft Fabric—what they can be used for, how we can change them, how we can add them, and how we can make sense of our projects and make them a bit…Thu, 27 Nov 2025 13:24:59 GMTData EngineeringmedallionBas Landhttps://thatfabricguy.com/how-to-change-microsoft-fabric-python-resources/https://thatfabricguy.com/how-to-change-microsoft-fabric-python-resources/A couple of weeks ago, I showed you how we can use DuckDB as a Python library in Microsoft Fabric to do Python notebooks on Delta Lake instead of using Spark notebooks.Thu, 20 Nov 2025 13:27:05 GMTData EngineeringcostsnotebooksperformancepythonBas Landhttps://thatfabricguy.com/metadata-driven-ingestion-into-fabric-with-pipelines/https://thatfabricguy.com/metadata-driven-ingestion-into-fabric-with-pipelines/Today I’m going into how you can set up the start of a metadata-driven processing framework for Microsoft Fabric. Let’s dive in.Thu, 13 Nov 2025 13:29:37 GMTData EngineeringmetadatapipelinesBas Landhttps://thatfabricguy.com/vibe-coding-in-microsoft-fabric/https://thatfabricguy.com/vibe-coding-in-microsoft-fabric/Can ChatGPT actually help you build a complete data platform in Microsoft Fabric if you pretend to know absolutely nothing? That’s exactly what I set out to test.Thu, 06 Nov 2025 13:32:39 GMTData EngineeringAImedallionnotebookspipelinesBas Landhttps://thatfabricguy.com/write-delta-tables-using-python-notebooks/https://thatfabricguy.com/write-delta-tables-using-python-notebooks/You can now write data to delta tables using Python notebooks, without using expensive Spark compute in Microsoft Fabric!Thu, 30 Oct 2025 15:46:10 GMTData Engineeringdelta lakepythonBas Landhttps://thatfabricguy.com/setting-v-order-for-delta-tables-in-microsoft-fabric/https://thatfabricguy.com/setting-v-order-for-delta-tables-in-microsoft-fabric/Microsoft recently made a change that caught a lot of people off guard: they disabled V-Ordering by default for new Fabric lakehouses. If you’re using Power BI Direct Lake mode, this matters—a lot.Thu, 23 Oct 2025 13:53:40 GMTData Engineeringdelta lakemedallionperformanceBas Landhttps://thatfabricguy.com/new-way-to-build-semantic-models-in-microsoft-fabric-without-power-bi/https://thatfabricguy.com/new-way-to-build-semantic-models-in-microsoft-fabric-without-power-bi/Did you know you can create Power BI semantic models directly from the Fabric web portal? No Power BI Desktop required. This is a game-changer if you’re working on a MacBook, dealing with a…Thu, 16 Oct 2025 15:58:14 GMTPower BIBas Landhttps://thatfabricguy.com/all-about-lakehouse-in-microsoft-fabric/https://thatfabricguy.com/all-about-lakehouse-in-microsoft-fabric/Lakehouses are the foundation of data engineering in Microsoft Fabric. They’re where you store your raw data, your transformed tables, and everything in between.Thu, 09 Oct 2025 16:54:34 GMTData Engineeringdelta lakelakehousemedallionBas Landhttps://thatfabricguy.com/speakin-dataminds-connect-2025/https://thatfabricguy.com/speakin-dataminds-connect-2025/I had the pleasure of speaking at DataMinds Connect, one of the best run data conferences I have been to. It’s hosted in the beautiful city of Mechelen, Belgium, and drew a lot of attendees.Wed, 08 Oct 2025 09:57:16 GMTPublic SpeakingBas Landhttps://thatfabricguy.com/stop-wasting-money-in-microsoft-fabric-dataflows-vs-notebooks/https://thatfabricguy.com/stop-wasting-money-in-microsoft-fabric-dataflows-vs-notebooks/There’s a common debate in the Fabric community: should you use low-code tools like Dataflows Gen2, or should you write pro-code solutions with PySpark notebooks? Today I’m going to settle this…Thu, 02 Oct 2025 16:58:11 GMTData EngineeringcostsperformanceBas Landhttps://thatfabricguy.com/conversational-ai-with-microsoft-fabric-data-agents/https://thatfabricguy.com/conversational-ai-with-microsoft-fabric-data-agents/Microsoft Fabric Data Agents are the ChatGPT for your data. Now you don't need dashboards anymore, you can talk to your data!Thu, 25 Sep 2025 11:38:30 GMTData EngineeringAIBas Landhttps://thatfabricguy.com/speaking-at-datascotland-2025/https://thatfabricguy.com/speaking-at-datascotland-2025/I had the pleasure of speaking at DATA:SCOTLAND, a free data and analytics conference in Glasgow that brought together nearly a thousand data enthusiasts.Fri, 12 Sep 2025 16:31:48 GMTPublic SpeakingBas Landhttps://thatfabricguy.com/case-sensitivity-in-microsoft-fabric-spark/https://thatfabricguy.com/case-sensitivity-in-microsoft-fabric-spark/I recently ran into a sneaky issue while migrating a customer from SQL Server to Microsoft Fabric. We were doing what every lazy developer does—copy-pasting code—and suddenly our joins stopped…Thu, 11 Sep 2025 17:00:32 GMTData EngineeringnotebookssparkBas Landhttps://thatfabricguy.com/speaking-at-data-saturday-gothenburg-2025/https://thatfabricguy.com/speaking-at-data-saturday-gothenburg-2025/I spoke at Data Saturday Gothenburg 2025. Besides the great company of awesome persons, we had an incredible speaker dinner the night before the event on a small island off the coast of Sweden,…Sat, 06 Sep 2025 17:59:00 GMTPublic SpeakingBas Landhttps://thatfabricguy.com/speaking-at-fabric-cafe-on-delta-optimisation/https://thatfabricguy.com/speaking-at-fabric-cafe-on-delta-optimisation/I Just wrapped up an online session at Fabric Cafe: “Delta Table Optimisation: Improvig Queries using Delta Partitioning and Liquid Clustering”Sat, 30 Aug 2025 16:20:00 GMTPublic SpeakingcostspartitioningperformanceBas Landhttps://thatfabricguy.com/onelake-security-preview-in-microsoft-fabric/https://thatfabricguy.com/onelake-security-preview-in-microsoft-fabric/Recently, Microsoft came out with a private preview for OneLake Security in Microsoft Fabric lakehouses. This is amazing, it is a feature I have been waiting for now for a long time.Mon, 04 Aug 2025 10:29:15 GMTData Engineeringdelta lakemedallionnotebookssecurityBas Landhttps://thatfabricguy.com/materialized-lake-views-in-microsoft-fabric-lakehouse/https://thatfabricguy.com/materialized-lake-views-in-microsoft-fabric-lakehouse/Materialized Lake Views in Microsoft Fabric can be used to create a more dynamic data platform. Learn more in this article!Tue, 22 Jul 2025 16:31:53 GMTData Engineeringdelta lakemedallionBas Landhttps://thatfabricguy.com/keep-spark-sessions-alive-in-microsoft-fabric/https://thatfabricguy.com/keep-spark-sessions-alive-in-microsoft-fabric/Perhaps I’m somewhat late to the party, however, last Saturday I found something that really helps me as a data engineer working with Microsoft Fabric.Mon, 14 Jul 2025 10:56:25 GMTData EngineeringsparkBas Landhttps://thatfabricguy.com/speaking-at-data-toboggan-cool-runnings-2025/https://thatfabricguy.com/speaking-at-data-toboggan-cool-runnings-2025/I Just wrapped up a session at Data Toboggan: “Delta Table Optimisation: Improvig Queries using Delta Partitioning and Liquid Clustering”Sat, 12 Jul 2025 11:13:00 GMTPublic SpeakingcostspartitioningperformanceBas Landhttps://thatfabricguy.com/speaking-at-fabric-cafe-dont-repeat-yourself/https://thatfabricguy.com/speaking-at-fabric-cafe-dont-repeat-yourself/I had the pleasure of speaking at Fabric Cafe, an online community aimed at sharing knowledge about Microsoft Fabric. And I’m all in favour of that!Sat, 05 Jul 2025 11:05:00 GMTPublic SpeakingnotebookspythonBas Landhttps://thatfabricguy.com/ai-copilots-microsoft-fabric/https://thatfabricguy.com/ai-copilots-microsoft-fabric/Discover how I use AI copilots to speed up Microsoft Fabric notebook development with smarter code, faster prototyping, and fewer headaches.Thu, 12 Jun 2025 18:17:10 GMTData EngineeringAInotebookspythonBas Landhttps://thatfabricguy.com/vs-code-notebooks-fabric/https://thatfabricguy.com/vs-code-notebooks-fabric/When you’re using PySpark notebooks in Microsoft Fabric data engineering, you can develop straight from the web browser. While that is interesting, a browser is usually not the most perfect software…Thu, 05 Jun 2025 21:08:21 GMTData Engineeringpythonsparkvs codeBas Landhttps://thatfabricguy.com/speaking-at-cloud-data-driven-may-2025/https://thatfabricguy.com/speaking-at-cloud-data-driven-may-2025/I Just wrapped up a session at Cloud Data Driven: “Delta Table Optimisation: Improvig Queries using Delta Partitioning and Liquid Clustering”Thu, 08 May 2025 20:43:00 GMTPublic SpeakingBas Landhttps://thatfabricguy.com/delta-lake-liquid-clustering-partitioning/https://thatfabricguy.com/delta-lake-liquid-clustering-partitioning/Learn how Liquid Clustering compares to Partitioning in Delta Lake. Boost MS Fabric performance with the right optimisation strategy.Thu, 01 May 2025 17:48:08 GMTData Engineeringdelta lakenotebooksperformancesparkBas Landhttps://thatfabricguy.com/speaking-at-get-together-march-2025-tabular-editor-voor-power-bi-developers/https://thatfabricguy.com/speaking-at-get-together-march-2025-tabular-editor-voor-power-bi-developers/At the March 2025 edition of Get Together, held in Baarn, The Netherlands, I had the pleasure of speaking about Tabular Editor for Power BI Developers. The session was given in Dutch.Fri, 28 Mar 2025 09:28:18 GMTPublic SpeakingBas Landhttps://thatfabricguy.com/delta-lake-partitioning-for-microsoft-fabric/https://thatfabricguy.com/delta-lake-partitioning-for-microsoft-fabric/Learn how Delta Lake partitioning boosts query performance and reduces costs in Microsoft Fabric. Optimise your data lake today!Thu, 27 Mar 2025 15:11:53 GMTData Engineeringdelta lakepartitioningsparkBas Landhttps://thatfabricguy.com/speaking-at-pbig-2025-microsoft-fabric-als-succesfactor-voor-power-bi-projecten/https://thatfabricguy.com/speaking-at-pbig-2025-microsoft-fabric-als-succesfactor-voor-power-bi-projecten/My session, titled ‘Microsoft Fabric als succesfactor voor Power BI projecten’ (in Dutch), helped showcase attendees how Microsoft Fabric can be used as a success factor for Power BI projects.Sat, 08 Mar 2025 10:29:00 GMTPublic SpeakingBas Landhttps://thatfabricguy.com/speaking-at-pbig-2025-tabular-editor-to-speed-up-power-bi-development/https://thatfabricguy.com/speaking-at-pbig-2025-tabular-editor-to-speed-up-power-bi-development/This year was my first time speaking at PBIG, the largest Power BI Community EventSat, 08 Mar 2025 10:14:00 GMTPublic SpeakingBas Landhttps://thatfabricguy.com/microsoft-fabric-costs-explained/https://thatfabricguy.com/microsoft-fabric-costs-explained/Understand Microsoft Fabric costs with this complete guide. Learn about Capacity Units, pricing models, cost management, and optimisation strategies.Fri, 28 Feb 2025 11:20:48 GMTData ArchitecturecostsBas Landhttps://thatfabricguy.com/speaking-at-fabric-summit-2025-4-billion-rows-in-directlake/https://thatfabricguy.com/speaking-at-fabric-summit-2025-4-billion-rows-in-directlake/I had the pleasure of speaking at RADACAD’s Power BI & Fabric Summit 2025, probably one of the largest Fabric events worldwide.Thu, 27 Feb 2025 14:55:36 GMTPublic SpeakingBas Landhttps://thatfabricguy.com/speaking-at-fabric-summit-2025-dont-repeat-yourself/https://thatfabricguy.com/speaking-at-fabric-summit-2025-dont-repeat-yourself/I had the pleasure of speaking at RADACAD’s Power BI & Fabric Summit 2025, probably one of the largest Fabric events worldwide.Tue, 25 Feb 2025 08:39:44 GMTPublic SpeakingBas Landhttps://thatfabricguy.com/extracting-paginating-apis-without-nextpage-metadata-with-microsoft-fabric-notebooks/https://thatfabricguy.com/extracting-paginating-apis-without-nextpage-metadata-with-microsoft-fabric-notebooks/Learn how to handle paginated APIs without metadata in Microsoft Fabric. This guide shows how to find the pagecount using Python.Fri, 31 Jan 2025 11:33:20 GMTData EngineeringapinotebookspaginationpythonBas Landhttps://thatfabricguy.com/speaking-at-fabric-user-group-denmark-january-2025/https://thatfabricguy.com/speaking-at-fabric-user-group-denmark-january-2025/I had the pleasure of speaking at the Danish Fabric User Group, an event hosted by community representatives and aimed at sharing knowledge between Microsoft Fabric professionals.Wed, 22 Jan 2025 10:18:14 GMTPublic SpeakingBas Landhttps://thatfabricguy.com/implementing-the-dry-principle-in-microsoft-fabric/https://thatfabricguy.com/implementing-the-dry-principle-in-microsoft-fabric/Implementing the DRY principle in Microsoft Fabric makes developing more efficient and easier to maintain!Fri, 29 Nov 2024 14:30:49 GMTData EngineeringpythonsparkBas Landhttps://thatfabricguy.com/speaking-at-data-saturday-parma-2024/https://thatfabricguy.com/speaking-at-data-saturday-parma-2024/I had the pleasure of speaking at Data Saturday in Parma, Italy, a very nice event that brought together lots of enthusiastic, mostly Italian, data professionals.Sat, 23 Nov 2024 14:23:00 GMTPublic SpeakingBas Landhttps://thatfabricguy.com/speaking-at-cloud-data-driven-user-group-meeting/https://thatfabricguy.com/speaking-at-cloud-data-driven-user-group-meeting/Yesterday, I had the pleasure of speaking at Cloud Data Driven, a free data and analytics user group with weekly online meetings.Fri, 22 Nov 2024 07:46:40 GMTPublic SpeakingBas Landhttps://thatfabricguy.com/notebook-orchestration-in-microsoft-fabric/https://thatfabricguy.com/notebook-orchestration-in-microsoft-fabric/In this post we will look at notebook orchestration, using PySpark notebooks with runMultiple in Microsoft Fabric.Fri, 25 Oct 2024 13:24:47 GMTData EngineeringnotebookssparkBas Landhttps://thatfabricguy.com/spark-dataframes-are-views-not-tables/https://thatfabricguy.com/spark-dataframes-are-views-not-tables/In Microsoft Fabric data engineering, we use Spark to apply transformations to our data. Just like you would write T-SQL to transform data in SQL Server, you would write PySpark or SparkSQL to…Mon, 14 Oct 2024 19:18:29 GMTData EngineeringdataframesparkBas Landhttps://thatfabricguy.com/how-to-implement-medallion-for-microsoft-fabric-lakehouses/https://thatfabricguy.com/how-to-implement-medallion-for-microsoft-fabric-lakehouses/In this guide, we’ll dive straight into the practical steps of how to implement Medallion Lakehouses using Microsoft Fabric.Fri, 11 Oct 2024 08:32:06 GMTData ArchitecturemedallionBas Landhttps://thatfabricguy.com/medallion-architecture-microsoft-fabric-theory-guide/https://thatfabricguy.com/medallion-architecture-microsoft-fabric-theory-guide/Structure your data platform with the Medallion Architecture in Microsoft Fabric. This guide covers the Bronze, Silver, Gold layers in FabricThu, 19 Sep 2024 13:22:46 GMTData ArchitecturemedallionBas Landhttps://thatfabricguy.com/speaking-at-datascotland-2024/https://thatfabricguy.com/speaking-at-datascotland-2024/Last week, I had the pleasure of speaking at DATA:SCOTLAND, a free data and analytics conference in Glasgow that brought together nearly a thousand data enthusiasts.Fri, 13 Sep 2024 19:09:00 GMTPublic SpeakingBas Landhttps://thatfabricguy.com/speaking-at-dutch-fabric-user-group-june-2024/https://thatfabricguy.com/speaking-at-dutch-fabric-user-group-june-2024/Yesterday, I was thrilled to deliver my first public speaking session in years! I was invited by the friendly people of the Dutch Fabric User Group to present my story to a group of about 35 people…Thu, 20 Jun 2024 11:57:00 GMTPublic SpeakingBas Land