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Author: Prologika - Teo Lachev

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Atlanta Microsoft BI Group Meeting on November 3rd (Semantic Link Labs: A Link to the Future)

Atlanta BI fans, please join us in person for our next meeting on Monday, November 3rd at 18:30 ET. Jason Romans (Microsoft MVP) will show you how to use Semantic Link Labs to troubleshoot unreliable reports and semantic models. And your humble correspondent will walk you through some of the latest Power BI and Fabric enhancements. Improving will sponsor the meeting. For more details and…

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Replicating BigQuery to Fabric

A recent engagement required replicating some DW tables from Google BigQuery to a Fabric Lakehouse. We considered the Fabric mirroring feature (back then in private preview, now publicly available) and learned some lessons along the way: 1. 400 Error during replication configuration – Caused by attempting to use a read-only GBQ dataset that is linked to another GBQ dataset but the link was broken. 2.…

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Atlanta Microsoft BI Group Meeting on October 9th (Everything You Want to Know About SQL Databases in Fabric)

Atlanta BI fans, please join us in person for our next meeting on Thursday, October 9th (note that we are meeting on Thursday for this meeting) at 18:30 ET. Sukhwant (Senior Product Manager, Microsoft) will explain why you should consider Fabric SQL databases. And your humble correspondent will walk you through some of the latest Power BI and Fabric enhancements. For more details and sign…

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Prologika Newsletter Fall 2025

Like the Ancient Greek philosopher Diogenes, who walked the streets of Athens with a lamp to find one honest man, I have been searching for a convincing Fabric feature for my clients. As Microsoft Fabric evolves, more scenarios unfold. For example, Direct Lake storage mode could help you alleviate memory pressure with large semantic models in certain scenarios, as it did for one client. This…

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Atlanta Microsoft BI Group Meeting on September 8th (End-to-End Azure DevOps for Data Engineering in Microsoft Fabric)

Atlanta BI fans, please join us in person for our next meeting on Monday, September 8th at 18:30 ET. Jeff Levy (Data Architect @ Protiviti) will show us how to implement Azure DevOps for data engineering projects in Microsoft Fabric. And your humble correspondent will walk you through some of the latest Power BI and Fabric enhancements. For more details and sign up, visit our group…

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Migrating Fabric Import Semantic Models to Direct Lake (Part 2)

I’ve previously shared my experience with migrating a Fabric imported semantic model to Direct Lake. This blog follows up with additional observations about performance. The following screenshot is taken from the Fabric Capacity Metrics app and it shows the maximum metrics over 14 days. The two enclosed items of interest are the original imported semantic model (the first item on the list) and its DL…

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From Prompt to Insight: My Daily Dance with AI

“I go checking out the reports, digging up the dirt You get to meet all sorts in this line of work And when I find the reason, I still can't get used to it And what have you got at the end of the day? What have you got to take away?” Private investigations, Dire Straits Here we go Me: “Write code to do this…

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Atlanta Microsoft BI Group Meeting on August 4th (Power BI Built-in Gems: Time-Saving Features You Should Be Using)

Atlanta BI fans, please join us in person for our next meeting on Monday, August 4th at 18:30 ET, which marks the 15th anniversary of the Atlanta Microsoft BI Group! Lakshmi Ponnurasan (a Microsoft Data Platform MVP and a Certified Power BI specialist) will show us how to apply Power BI time-saving built-in features to create stunning and impactful reports in less time. And your…

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Migrating Fabric Import Semantic Models to Direct Lake

I’ve recently written about strategies for addressing memory pressures with Fabric large semantic models and I mentioned that one of them was switching to Direct Lake. This blog captures my experience of migrating a real-life import semantic model to Direct Lake. About the project In this case, the client had a 40 GB semantic model with 250 million rows spread across two fact tables. The…

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Atlanta Microsoft BI Group Meeting on July 7nd (Getting Started with Copilot in Microsoft Fabric)

Atlanta BI fans, please join us in person for our next meeting on Monday, July 7nd at 18:30 ET. Shabnam Watson (BI consultant and Microsoft MVP) will introduce you to Microsoft Fabric copilots. And your humble correspondent will walk you through some of the latest Power BI and Fabric enhancements. For more details and sign up, visit our group page. Delivery: In-person Level: Intermediate Food: Pizza…

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