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DAX Notes Banner

📐 DAX Notes — Beginners to Advanced

A concept-first, example-driven repository for mastering DAX (Data Analysis Expressions) from fundamentals to advanced business calculations used in Power BI, Excel Power Pivot, and SSAS.

🔥 Repository Stats

🚀 What’s Inside?

Level Topics Covered
🔹 Fundamentals What is DAX, Measures vs Columns
📊 Context Row Context, Filter Context
📐 Core Functions SUM, AVERAGE, COUNT, CALCULATE
🧠 Logical DAX IF, SWITCH, HASONEVALUE
⚙️ Time Intelligence YTD, MTD, SAMEPERIODLASTYEAR
📈 Advanced DAX ALL, ALLEXCEPT, VALUES
🏭 Business Use KPIs, Ratios, Growth Metrics

🧠 Why Learn DAX?

✔ Backbone of Power BI analytics
✔ Enables custom business calculations
✔ Essential for Data Analyst & BI roles
✔ Converts visuals into true insights
✔ Used in real-world reporting & dashboards

🎯 Objectives of This Repository

  • Build strong conceptual clarity in DAX
  • Understand how DAX really works internally
  • Learn context-driven calculations step-by-step
  • Bridge the gap between syntax and business logic
  • Prepare learners for industry dashboards & interviews

🌟 Importance of DAX

  • 🔹 Core calculation language for Power BI
  • 🔹 Enables dynamic KPIs & measures
  • 🔹 Powers advanced analytics & time intelligence
  • 🔹 Essential for performance-optimized dashboards
  • 🔹 Foundation for professional BI development

📦 What This Repository Covers

Level Coverage
🟢 Beginner DAX Basics, Syntax, Measures
🟡 Intermediate Context, CALCULATE, Filters
🔵 Advanced Time Intelligence, Optimization
🔴 Industry Real Business Scenarios

🧭 DAX Learning Roadmap (UI/UX Styled Flow)

flowchart LR

    A[Start DAX Journey]:::start --> B[DAX Fundamentals]:::basic
    B --> C[Measures vs Columns]:::basic

    C --> D[Row Context]:::intermediate
    C --> E[Filter Context]:::intermediate

    D --> F[CALCULATE Function]:::algo
    E --> F

    F --> G[Logical Functions]:::advanced
    G --> H[Time Intelligence]:::advanced

    H --> I[Advanced Filters]:::advanced
    I --> J[Business KPIs]:::deploy

    J --> K[Real-World Power BI Dashboards]:::deploy

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    classDef basic fill:#ecfeff,color:#0f172a,stroke:#06b6d4,stroke-width:2px
    classDef intermediate fill:#fef3c7,color:#78350f,stroke:#f59e0b,stroke-width:2px
    classDef algo fill:#ede9fe,color:#4c1d95,stroke:#8b5cf6,stroke-width:2px
    classDef advanced fill:#dcfce7,color:#14532d,stroke:#22c55e,stroke-width:2px
    classDef deploy fill:#fee2e2,color:#7f1d1d,stroke:#ef4444,stroke-width:2px
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🧠 Key Concepts You Will Learn

🔹 Core Foundations What is DAX? Measures vs Calculated Columns Evaluation Context

🔹 Context Handling Row Context Filter Context Context Transition

🔹 Core Functions SUM, COUNT, AVERAGE CALCULATE, FILTER ALL, VALUES

🔹 Logical & Conditional DAX IF, SWITCH HASONEVALUE ISBLANK

🔹 Time Intelligence YTD, MTD, QTD SAMEPERIODLASTYEAR DATEADD

🔹 Business Analytics KPIs & Ratios Growth & Variance Performance Metrics

🛠️ Tools & Technologies Used

Tool Purpose
Power BI Dashboard & DAX Development
DAX Analytical Calculations
Excel Power Pivot DAX Practice
Data Modeling Relationships & Schema
Business Logic Insight Generation

👥 Who This Repository Is For

✔ Students & Beginners ✔ Power BI Learners ✔ Faculty & Trainers ✔ Data Analysts & BI Developers ✔ Interview & Exam Preparation

🧑‍💻 Author

Ashwin Ananta Panbude Data Analyst | Faculty