Master DAX from Zero to Advanced with Loga Rajeshwaran Karthikeyan

200 pages · 20 parts · 50 recipes · 100 practice problems · 135 interview questions · Instant download

Most DAX tutorials teach you functions. This one teaches you to explain why a number changes when a filter moves. That's the skill that separates someone who copies measures from someone who owns the semantic model.

Everything runs on one small model you build in Chapter 2 from the companion CSV files. It's deliberately tiny, so you can check the engine's answer against your own arithmetic and actually learn where you were wrong.

What you get

· Foundations — measures vs calculated columns vs calculated tables, model design, first measures

· The core concepts — row context, filter context, context transition, and CALCULATE, taught as one connected idea instead of four separate chapters

· Iterators, variables, virtual tables, ranking, relationship functions, advanced filtering

· 50-recipe cookbook — copy-ready solutions to the metrics that actually get asked for: AOV, new vs returning customers, repeat purchase rate, YTD, rolling 12 months, moving averages, CLV, market share, retention, churn, Pareto curves, dynamic KPI status, dynamic date comparison

· Debugging — a reproducible five-stage method for the "the total is wrong" problem

· Performance — how to set up a valid benchmark and inspect the work the engine really does

· 50 common mistakes — the ones beginners and seniors both make

· 135 interview questions with full explanations

· 100 practice problems, answers held back in a separate key so you have to think first

· Capstone: Commerce Performance Lab — build a four-page executive, product, customer, and time model with a documented measure catalog and a 15-point acceptance matrix

· 6 bonus PDFs — one-page cheat sheet, 50 selected interview Q&A, full practice workbook, debugging checklist, performance checklist, 30-day roadmap

Who it's for

Excel users moving into Power BI · analysts and BI developers · anyone interviewing for a Power BI or analytics role · practitioners who can write a SUM but lose control at totals and time intelligence

Who it's not for

Anyone wanting an exhaustive catalog of every DAX function, a SQL replacement, or a certification guarantee. The advanced chapters assume you built the earlier model.

Prerequisites

Power BI Desktop. Basic arithmetic. SQL and Excel help but aren't required. DAX Studio for the diagnostics chapters. No paid service needed.

Format: PDF, instant download after purchase. Companion CSV files included. No .pbix file is included — you build the model, which is the point.