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KNOWLEDGE HUB
Practical explanations for better data work
Articles on Excel, Power BI, Power Query, dashboards, and automation—kept focused enough to use in your next project.


One Macro, One Full Excel Expenses Dashboard (with Claude AI)
Most expense reports start as a flat table — and stay that way. With a single VBA macro, you can turn that raw Data sheet into a polished, interactive dashboard, with no manual chart-building required. The macro does the heavy lifting. It formats your table, builds seven PivotTables, lays out six KPI cards (total spend, budget, approval rate and more), draws five charts, and wires up Month and Department slicers so everything filters together. A live status bar shows each ste

MirVel
Jun 81 min read


7 Underrated Excel Functions You're Probably Not Using (But Should)
This guide covers 7 underrated Excel functions that most people overlook. Each one solves a real problem, saves time, and works right now in Excel 365. With practical examples and formulas you can copy, you will walk away with new tools to add to your daily workflow.

MirVel
May 206 min read


Power BI Error Handling: Build Reusable Queries That Work on Any Table
Dirty data does not announce itself. It arrives quietly as blank cells, "N/A" placeholders, stray zeros, or entirely empty columns that looked fine in the source system. Left untreated, these inconsistencies silently corrupt your totals, break your relationships, and cause scheduled refreshes to fail at the worst possible moment. This guide shows you how to stop patching issues one column at a time and build a small library of reusable M functions that handle every table inco

MirVel
May 177 min read


Power BI General Options Explained: Parallel Loading, Memory Limits, and Refresh Settings That Actually Matter
Learn how Power BI's parallel loading, memory limits, and General Options affect your dataset refresh speed. Compare Pro vs Premium settings with practical tips.

MirVel
May 177 min read


Native Query in Power BI: How to Write SQL Directly Against Your Data Source
Learn how to use native queries in Power BI to write SQL directly against your data source. Step-by-step guide with M code, tips, and a practice file included.

MirVel
May 137 min read


Sharing Power BI Apps and Reports with External Users: Best Practices, Caveats, and Real-World Tips
A practical guide to securely sharing Power BI apps and reports with external users using Entra B2B, licensing checks, RLS, and core governance best practices.

MirVel
Apr 227 min read
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