Tutorials, deep dives and opinions on Microsoft Fabric and Power BI by Bas Land, Microsoft Data Platform MVP.https://thatfabricguy.com/enhttps://thatfabricguy.com/claude-code-setup-for-microsoft-fabric/https://thatfabricguy.com/claude-code-setup-for-microsoft-fabric/From a fresh macOS VM to Claude Code that can see your Fabric tenant, with Git, Python 3.13, the Azure and Fabric CLIs, skills and MCP.Thu, 15 Oct 2026 02:30:28 GMTData EngineeringAIgitsecurityBas Landhttps://thatfabricguy.com/sharepoint-excel-files-in-microsoft-fabric/https://thatfabricguy.com/sharepoint-excel-files-in-microsoft-fabric/Connect Microsoft Fabric to SharePoint, shortcut a document library into a lakehouse and read an Excel file into Spark, without copying it into OneLake.Thu, 08 Oct 2026 02:15:17 GMTData EngineeringonelakenotebookssparkBas Landhttps://thatfabricguy.com/what-belongs-in-each-medallion-layer-in-microsoft-fabric/https://thatfabricguy.com/what-belongs-in-each-medallion-layer-in-microsoft-fabric/What belongs in bronze, silver and gold, and why business rules never go in silver. One rule, the system columns and a four-cell gold notebook.Thu, 01 Oct 2026 01:30:26 GMTData ArchitecturemedallionlakehousenotebooksBas Landhttps://thatfabricguy.com/shortcut-azure-blob-storage-into-microsoft-fabric/https://thatfabricguy.com/shortcut-azure-blob-storage-into-microsoft-fabric/Create a shortcut from a Fabric lakehouse to Azure Blob Storage with a SAS token and read the CSV from a notebook, without copying it into OneLake.Thu, 24 Sep 2026 00:00:16 GMTData EngineeringonelakelakehousenotebooksBas Landhttps://thatfabricguy.com/claude-code-testing-its-own-work-in-microsoft-fabric/https://thatfabricguy.com/claude-code-testing-its-own-work-in-microsoft-fabric/Claude Code can query your lakehouse over OneLake to check its own work. How I set that up, and why the query results leave Microsoft when it does.Thu, 17 Sep 2026 00:00:38 GMTData EngineeringAIonelakesecurityBas Landhttps://thatfabricguy.com/mirror-azure-sql-database-into-microsoft-fabric/https://thatfabricguy.com/mirror-azure-sql-database-into-microsoft-fabric/Mirror an Azure SQL database into Microsoft Fabric with a workspace identity, shortcut the schemas into a lakehouse and query them from a notebook.Thu, 10 Sep 2026 02:45:31 GMTData EngineeringonelakelakehousesecurityBas Landhttps://thatfabricguy.com/replace-sharepoint-lists-with-a-microsoft-fabric-app/https://thatfabricguy.com/replace-sharepoint-lists-with-a-microsoft-fabric-app/A production Fabric app built with Rayfin replaces SharePoint lists: users edit metadata, a Fabric SQL database stores it, notebooks query it.Thu, 03 Sep 2026 01:45:25 GMTData EngineeringmetadataonelakelakehousenotebooksBas Landhttps://thatfabricguy.com/game-boy-style-rpg-in-microsoft-fabric-with-rayfin/https://thatfabricguy.com/game-boy-style-rpg-in-microsoft-fabric-with-rayfin/I built a Game Boy Color style RPG as a Fabric app with Rayfin and Claude Code. Its NPCs answer with live DAX queries on a semantic model.Thu, 27 Aug 2026 02:00:09 GMTData EngineeringAIpower bivs codeBas Landhttps://thatfabricguy.com/claude-skills-for-microsoft-fabric/https://thatfabricguy.com/claude-skills-for-microsoft-fabric/What Claude skills are, how to upload one from GitHub, the three I use for Fabric work, and how Skill Creator built a new one for me.Thu, 20 Aug 2026 02:45:02 GMTData EngineeringAInotebooksmedallionBas Landhttps://thatfabricguy.com/connect-claude-desktop-to-microsoft-fabric-mcp/https://thatfabricguy.com/connect-claude-desktop-to-microsoft-fabric-mcp/Set up the Fabric Core MCP server in Claude Desktop with an Entra ID app registration, then let Claude list lakehouses and build a semantic model.Thu, 13 Aug 2026 04:15:28 GMTData EngineeringAIapisecurityBas Landhttps://thatfabricguy.com/refining-a-microsoft-fabric-app-with-rayfin/https://thatfabricguy.com/refining-a-microsoft-fabric-app-with-rayfin/Part two of my Rayfin app: two Claude Code prompts turn a stuttering 3D drone flight into a static heat map, then into 3D taxi columns.Thu, 06 Aug 2026 04:00:33 GMTData EngineeringAIpower bivs codeBas Landhttps://thatfabricguy.com/build-a-microsoft-fabric-app-with-rayfin/https://thatfabricguy.com/build-a-microsoft-fabric-app-with-rayfin/My first Fabric app with Rayfin, built by Claude Code: a chart on a semantic model, then a 3D drone flight over New York that Power BI can't do.Thu, 30 Jul 2026 02:00:29 GMTData EngineeringAIpower bivs codeBas Landhttps://thatfabricguy.com/microsoft-fabric-data-agents-guide/https://thatfabricguy.com/microsoft-fabric-data-agents-guide/When a Fabric data agent beats a dashboard, what it costs, which prerequisites you need, and how instructions and sample queries keep it accurate.Thu, 23 Jul 2026 03:11:31 GMTData Engineeringdata agentsAIpower biBas Landhttps://thatfabricguy.com/variable-libraries-in-microsoft-fabric/https://thatfabricguy.com/variable-libraries-in-microsoft-fabric/Create a variable library in Microsoft Fabric, deploy it to production, and drive notebooks and pipeline connections per environment without changing code.Thu, 16 Jul 2026 03:00:35 GMTAdministrationdeployment pipelinesnotebookspipelinesBas Landhttps://thatfabricguy.com/refresh-materialized-lake-views-with-pipelines-in-microsoft-fabric/https://thatfabricguy.com/refresh-materialized-lake-views-with-pipelines-in-microsoft-fabric/Fabric now has a Refresh materialized lake view pipeline activity. How it compares to refreshing from code or the lakehouse, and how to set it up.Thu, 09 Jul 2026 01:30:38 GMTData EngineeringlakehousepipelinessparkBas Landhttps://thatfabricguy.com/visualisations-in-microsoft-fabric-data-agents/https://thatfabricguy.com/visualisations-in-microsoft-fabric-data-agents/Fabric data agents can now answer with charts. What works, what is missing (bar charts, Power BI export) and how the agent writes DAX measures on the fly.Thu, 02 Jul 2026 02:00:00 GMTData Engineeringdata agentsAIpower biBas Landhttps://thatfabricguy.com/claude-code-for-microsoft-fabric/https://thatfabricguy.com/claude-code-for-microsoft-fabric/Clone a Fabric workspace from Azure DevOps into VS Code, let Claude Code edit a notebook, a semantic model and a report, then review and sync it back.Thu, 25 Jun 2026 01:45:08 GMTData EngineeringAIgitvs codeazure devopsBas Landhttps://thatfabricguy.com/incremental-refresh-materialized-lake-views-in-microsoft-fabric/https://thatfabricguy.com/incremental-refresh-materialized-lake-views-in-microsoft-fabric/Materialized lake views usually refresh with a full load. Turn on change data feed and only append to the source, and Fabric refreshes incrementally.Thu, 18 Jun 2026 02:00:17 GMTData Engineeringlakehousedelta lakeperformanceBas Landhttps://thatfabricguy.com/pipeline-approvals-in-microsoft-fabric/https://thatfabricguy.com/pipeline-approvals-in-microsoft-fabric/Use the Approval (Preview) activity to pause a Fabric pipeline until someone approves it, with the request sent by email or in Microsoft Teams.Thu, 11 Jun 2026 03:00:36 GMTData EngineeringpipelinesapprovalsBas Landhttps://thatfabricguy.com/connect-on-premises-sql-server-to-microsoft-fabric/https://thatfabricguy.com/connect-on-premises-sql-server-to-microsoft-fabric/Install the on-premises data gateway, create a SQL Server connection and copy 4.1 million rows into a Fabric lakehouse with a copy data pipeline.Thu, 04 Jun 2026 06:43:39 GMTData EngineeringpipelineslakehousegatewayBas Landhttps://thatfabricguy.com/bulk-edit-microsoft-fabric-notebooks-with-claude-code/https://thatfabricguy.com/bulk-edit-microsoft-fabric-notebooks-with-claude-code/Sync a Fabric workspace to Git, open it in VS Code and let Claude Code make the same edit in 26 notebooks, then check the diff and update Fabric.Thu, 28 May 2026 09:29:56 GMTData EngineeringAInotebooksgitvs codeBas Landhttps://thatfabricguy.com/workspace-identity-for-key-vault-in-microsoft-fabric/https://thatfabricguy.com/workspace-identity-for-key-vault-in-microsoft-fabric/Give a Fabric workspace its own identity, grant it access to Key Vault and run a notebook from a pipeline without your own user account.Wed, 20 May 2026 22:00:17 GMTAdministrationsecuritypipelinesnotebooksBas Landhttps://thatfabricguy.com/onelake-storage-tiers-in-microsoft-fabric/https://thatfabricguy.com/onelake-storage-tiers-in-microsoft-fabric/Move old lakehouse files to cool and cold OneLake storage with workspace lifecycle rules, what each tier costs, and the thresholds I use.Wed, 13 May 2026 11:32:23 GMTAdministrationcostsonelakelakehouseBas Landhttps://thatfabricguy.com/git-integration-with-an-external-tenant-in-microsoft-fabric/https://thatfabricguy.com/git-integration-with-an-external-tenant-in-microsoft-fabric/Link a Fabric workspace to an Azure DevOps repository in another tenant through a shared connection, then commit notebook changes to it.Wed, 06 May 2026 22:00:45 GMTAdministrationgitazure devopsnotebooksBas Landhttps://thatfabricguy.com/f2-vs-f64-performance-in-microsoft-fabric/https://thatfabricguy.com/f2-vs-f64-performance-in-microsoft-fabric/I ran the same 295 million row load and merge on an F2 and an F64 capacity. The F64 was no faster, and this is why.Thu, 30 Apr 2026 03:00:49 GMTAdministrationperformancecostssparkBas Landhttps://thatfabricguy.com/spark-sql-vs-pyspark-in-microsoft-fabric/https://thatfabricguy.com/spark-sql-vs-pyspark-in-microsoft-fabric/My notebook pattern for a Fabric lakehouse, with Spark SQL for the transformation and a Python merge to upsert, and why SQL reads better than PySpark.Thu, 23 Apr 2026 01:45:19 GMTData EngineeringsparknotebookspythonlakehouseBas Landhttps://thatfabricguy.com/ingesting-data-into-onelake-for-microsoft-fabric/https://thatfabricguy.com/ingesting-data-into-onelake-for-microsoft-fabric/Shortcuts, mirroring or copying data. The order I pick them in to make data available in Microsoft Fabric, and what each costs in compute, storage and upkeep.Wed, 15 Apr 2026 22:00:26 GMTData EngineeringonelakecostspipelinesBas Landhttps://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/deployment-pipelines-in-microsoft-fabric/https://thatfabricguy.com/deployment-pipelines-in-microsoft-fabric/Set up a deployment pipeline in Microsoft Fabric, deploy a lakehouse and a notebook from development to production, then ship a change to that notebook.Wed, 08 Apr 2026 22:00:34 GMTAdministrationdeployment pipelineslakehousenotebooksBas 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/acid-transactions-in-delta-lake-for-microsoft-fabric/https://thatfabricguy.com/acid-transactions-in-delta-lake-for-microsoft-fabric/What atomicity, consistency, isolation and durability mean for Delta tables in Microsoft Fabric, and how Delta keeps concurrent reads and writes safe.Wed, 01 Apr 2026 22:00:00 GMTData Engineeringdelta lakelakehouseBas Landhttps://thatfabricguy.com/parquet-vs-delta-lake-in-microsoft-fabric/https://thatfabricguy.com/parquet-vs-delta-lake-in-microsoft-fabric/Parquet is a columnar file format and Delta Lake is the system on top of it. What each one does, what plain Parquet misses and why Fabric uses both.Thu, 26 Mar 2026 05:16:34 GMTData Engineeringdelta lakelakehouseBas Landhttps://thatfabricguy.com/generating-test-data-for-microsoft-fabric-with-claude/https://thatfabricguy.com/generating-test-data-for-microsoft-fabric-with-claude/How I vibe coded a parameterised Fabric notebook with Claude that seeds a Moneybird sandbox with realistic Dutch test data, within the API rate limit.Thu, 19 Mar 2026 05:30:30 GMTData EngineeringAInotebooksapipythonBas Landhttps://thatfabricguy.com/pipeline-failure-notifications-in-microsoft-fabric/https://thatfabricguy.com/pipeline-failure-notifications-in-microsoft-fabric/Get an email when a scheduled Microsoft Fabric pipeline run fails, set up from the pipeline's schedule without the Office 365 email activity.Tue, 10 Mar 2026 15:56:28 GMTData EngineeringpipelinesmonitoringBas 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/refresh-materialized-lake-views-in-microsoft-fabric/https://thatfabricguy.com/refresh-materialized-lake-views-in-microsoft-fabric/Two ways to refresh a materialized lake view in Microsoft Fabric, from code in your ELT process or on a schedule, and when to use which.Thu, 05 Mar 2026 02:00:49 GMTData EngineeringlakehousesparkmetadataBas Landhttps://thatfabricguy.com/chatgpt-vs-claude-for-microsoft-fabric-notebooks/https://thatfabricguy.com/chatgpt-vs-claude-for-microsoft-fabric-notebooks/I gave ChatGPT and Claude one prompt to build a secure, metadata-driven Moneybird extract in a Fabric notebook, then ran their code unchanged.Thu, 26 Feb 2026 05:15:06 GMTData EngineeringAInotebooksapiBas Landhttps://thatfabricguy.com/azure-storage-explorer-for-microsoft-fabric/https://thatfabricguy.com/azure-storage-explorer-for-microsoft-fabric/Connect Azure Storage Explorer to a Fabric lakehouse folder, browse OneLake like a local file system and download or upload files.Thu, 19 Feb 2026 04:15:01 GMTData EngineeringlakehouseonelakedeveloperBas Landhttps://thatfabricguy.com/azure-key-vault-in-microsoft-fabric/https://thatfabricguy.com/azure-key-vault-in-microsoft-fabric/Store API tokens in Azure Key Vault and fetch them in a Fabric notebook with notebookutils, so secrets stay out of your code, Git and logs.Thu, 12 Feb 2026 05:15:05 GMTAdministrationsecuritynotebooksapiBas Landhttps://thatfabricguy.com/microsoft-fabric-data-agent-costs/https://thatfabricguy.com/microsoft-fabric-data-agent-costs/Find what a Fabric data agent costs in the Capacity Metrics app, how token pricing works, and why asking semantic models first keeps the bill down.Thu, 05 Feb 2026 05:15:05 GMTAdministrationdata agentscostsAIBas 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/optimise-microsoft-fabric-data-agents/https://thatfabricguy.com/optimise-microsoft-fabric-data-agents/Combine a semantic model and a lakehouse in one Fabric data agent, and use instructions and example queries so it picks the right source and stays on topic.Thu, 29 Jan 2026 09:13:51 GMTData Engineeringdata agentsAIlakehouseBas 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/materialise-dax-query-results-in-microsoft-fabric/https://thatfabricguy.com/materialise-dax-query-results-in-microsoft-fabric/Query the Capacity Metrics semantic model with DAX through the Power BI executeQueries API and store the results as a Delta table in your lakehouse.Thu, 22 Jan 2026 05:45:03 GMTData Engineeringnotebooksapipower bicostsBas Landhttps://thatfabricguy.com/anatomy-of-a-delta-table-in-microsoft-fabric/https://thatfabricguy.com/anatomy-of-a-delta-table-in-microsoft-fabric/What is inside a Delta table in Microsoft Fabric, from the Parquet files to the JSON commits, file statistics and checkpoints in _delta_log.Mon, 19 Jan 2026 14:03:36 GMTData Engineeringdelta lakelakehouseperformanceBas 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