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KNOWLEDGE HUB
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Power Query Performance Playbook (Power BI & Excel)
Want faster refreshes and snappier previews? Here’s a practical, no-nonsense guide to making Power Query load much quicker using only generic patterns and examples. Check out some of our FREE templates and materials. PRACTICE MATERIAL BELOW!👇 Quick Wins Fold early, fold often: Filter and select columns as the first steps. Prune columns: Load only what you use. Reference, don’t duplicate: Reuse staged queries. Avoid row-by-row custom columns: Prefer joins, grouping, and

MirVel
Aug 28, 20253 min read


Build a Profit & Loss (P&L) report in Power BI — end-to-end from CSVs
This post walks through the exact setup shown in your screenshots: folder-based CSV ingestion in Power Query, a tidy star schema, an FX bridge for currency conversion, a P&L layout table for the matrix, and a simple report page with monthly columns and KPI cards. No fluff—just what’s in your files. Check out some of our FREE templates and materials. PRACTICE MATERIAL BELOW!👇 What we’ll build (at a glance) Tables : dimDate, dimAccount, factGL, dimFX, dimPnL, plus your Calcula

MirVel
Aug 15, 20253 min read


Automatically Import Data from Email Links Using Power Query in Excel or Power BI
Have you ever received an email with a link to download a CSV or Excel file, and wished it could just go straight into your Excel sheet or Power BI dashboard? Good news: it can. With Power Query , you can connect directly to these file links—whether they’re public or require Microsoft login—and automatically load them into Excel or Power BI. This blog shows how to do it step by step. Check out some of our FREE templates and materials. PRACTICE MATERIAL BELOW!👇 Why Use Power

MirVel
Jul 11, 20253 min read


Power Query: Custom Function for Error Detection in Tables
When you're transforming data in Power BI or Excel using Power Query, you're bound to run into errors —mismatched data types, division by text, nulls, you name it. But instead of manually inspecting row by row, why not automate error detection with a custom Power Query function ? Check out some of our FREE templates and materials. PRACTICE MATERIAL BELOW!👇 In this blog post, I’ll walk you through a clean method to catch and analyze all row-level errors using Power Query. Th

MirVel
Jun 9, 20253 min read


Power Query in Excel & Power BI: The Ultimate Data Transformer
Power Query is Microsoft’s powerhouse tool for data transformation and automation, built into Excel and Power BI. If you’ve ever spent hours copy-pasting and cleaning data manually (and let’s face it, most of us have), Power Query is here to save the day. This blog post will take a casual yet detailed dive into Power Query, its benefits, and how to use it, from basic to advanced scenarios. We’ll walk through practical examples with sales, trade, and technical data, including

MirVel
May 13, 202521 min read
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