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Power Query vs. Dynamic Array Functions in Excel | Xyclos
Executive Summary: Power Query vs. Functions in Excel: When to Use Each? Power Query and Excel functions don't compete: they solve different problems. Dynamic array functions like FILTER or SELECTCOLS work in real time within cells, ideal for fast and flexible analysis. Power Query, on the other hand, transforms data as a process: it loads, cleans, and structures information without relying on constant recalculation. In simple scenarios, both work equally well. But when data

Carlos Altamirano
Mar 175 min read


16 days, 3 courses, and a bright future: Intensive learning with Excel and Power BI | Xyclos
Can 16 days transform your career? Yes. This is the experience of a young woman who completed three highly sought-after technical...

Carlos Altamirano
Jun 27, 20255 min read


The perfect triad: generative AI + human judgment + deterministic tools | Xyclos
It all started with this idea today, which I made to ChatGPT o3: " LLM's are predictive, and you can't expect consistent or equal...

Carlos Altamirano
Apr 24, 20253 min read


What do I like about functions in Excel and Google Sheets? | Xyclos
What do I like about functions? I like them because when used alone or together, they turn me into a programmer... into a data analyst...

Carlos Altamirano
Apr 10, 20253 min read


Automation in Outlook, Excel, and Power BI | Xyclos
In 2025, everyone is talking about automation and AI agents. And I started to think that I've been managing automation for more than 30...

Carlos Altamirano
Mar 24, 20254 min read


When to use Excel and when to use Power Query? A practical analysis | Xyclos
I have published hundreds of articles on my blog on various topics and I wanted to categorize them to have better control over them for...

Carlos Altamirano
Oct 13, 20244 min read
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