Teo Lachev

Direct Lake Composite Models - prologika.com/direct-lake-co… I’ve mentioned previously in the “A Couple of Direct Lake Gotchas” post that unlike Power BI reports, Excel surprised me by not showing user-defined hierarchies in a Direct Lake model. Direct Lake comes with other gotcha...

Atlanta Microsoft BI Group Meeting on March 2nd (Your First Steps in Microsoft Fabric Using Just SQL) - prologika.com/atlanta-micros… Atlanta BI fans, please join us in person for our next meeting on Monday, March 2nd at 18:30 ET. Shabnam Watson will show you how you can apply you...

A Couple of Direct Lake Gotchas - prologika.com/a-couple-of-di… I’m helping an enterprise client modernize their data analytics estate. As a part of this exercise, a SSAS Multidimensional financial cube must be converted to a Power BI semantic model. The challenge is that business...

Atlanta Microsoft BI Group Meeting on February 2nd (Power BI Translytical Taskflows) - prologika.com/atlanta-micros… Atlanta BI fans, please join us in person for our next meeting on Monday, February 2nd at 18:30 ET. Sukhwant Kaur (Product Manager at Microsoft) will show you how s...

Atlanta Microsoft BI Group Meeting on January 5th (Visual Calculations in Power BI) - prologika.com/atlanta-micros… Atlanta BI fans, please join us in person for our next meeting on Monday, January 5th at 18:30 ET. Dean Jurecic will show you how Power BI visual calculations can si...

First Look at Fabric IQ: The Good, The Bad, and The Ugly - prologika.com/first-look-at-… Telegraph sang a song about the world outside Telegraph road got so deep and so wide Like a rolling river… The Telegraph Road, Dire Straits At Ignite in November, 2025, Microsoft intro...

Performance and Cost Considerations from Power BI Pro/PPU to Fabric - prologika.com/performance-an… What performance and cost considerations should you keep in mind if you are currently on Power BI Pro/PPU, but Fabric looks increasingly enticing? Performance Performance is d...

Prologika Newsletter Winter 2025 - prologika.com/prologika-news… If Microsoft Fabric is in your future, you need to come up with a strategy to get your data in Fabric OneLake. That’s because the holy grail of Fabric is the Delta Parquet file format. The good news is that all F...

Power BI Workspace Identity Authentication - prologika.com/power-bi-works… What credentials do you use to refresh your Power BI semantic models from Azure SQL SKUs, such as Azure SQL Database. Probably your credentials or a designated Entra account? Both are not ideal for a variet...

Atlanta Microsoft BI Group Meeting on December 1st (Migrating Semantic Models to Fabric Direct Lake) - prologika.com/atlanta-micros… Atlanta BI fans, please join us in person for our next meeting on Monday, December 1st at 18:30 ET. I'll show you how to Fabric DirectLake semantic ...

SaaS Losers and Winners: Paylocity and Element - prologika.com/saas-losers-an… “We are sailing to Philadelphia A world away from the coaly Tyne Sailing to Philadelphia To draw the line The Mason-Dixon line” “Sailing to Philadelphia”, Mark Knopfler As I’ve said in the past ...

Atlanta Microsoft BI Group Meeting on November 3rd (Semantic Link Labs: A Link to the Future) - prologika.com/atlanta-micros… 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 S...

Replicating BigQuery to Fabric - prologika.com/replicating-bi… 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 les...

Atlanta Microsoft BI Group Meeting on October 9th (Everything You Want to Know About SQL Databases in Fabric) - prologika.com/atlanta-micros… 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 meet...

Prologika Newsletter Fall 2025 - prologika.com/prologika-news… 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...

Atlanta Microsoft BI Group Meeting on September 8th (End-to-End Azure DevOps for Data Engineering in Microsoft Fabric) - prologika.com/atlanta-micros… Atlanta BI fans, please join us in person for our next meeting on Monday, September 8th at 18:30 ET. Jeff Levy (Data Architect @ P...

Migrating Fabric Import Semantic Models to Direct Lake (Part 2) - prologika.com/migrating-fabr… 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 s...

From Prompt to Insight: My Daily Dance with AI - prologika.com/ai-daily-dance/ “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...

Atlanta Microsoft BI Group Meeting on August 4th (Power BI Built-in Gems: Time-Saving Features You Should Be Using) - prologika.com/atlanta-micros… 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...

Migrating Fabric Import Semantic Models to Direct Lake - prologika.com/migrating-fabr… 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 expe...