Power BI DAX Tutorial | How To Use DAX Functions In Power BI | Power BI For Beginners

#PowerBI DAX

Introduction

• Discussion about leveraging PowerBI DAX for advanced data analytics.
• Overview of DAX as a powerful tool for calculations beyond standard visualizations.

Key Points

What is DAX?

• Definition: DAX stands for Data Analysis Expressions, a language used in PowerBI and other Microsoft tools.
• Purpose: Allows creation of custom calculations, and dynamic reports, offering deep data insights.

Benefits of DAX

• Custom Calculations: Calculation of total sales, average profit, etc.
• Dynamic Reports: Adjust reports based on user inputs or specific time periods.
• Data Exploration: Utilize calculated columns and measures for meaningful insights.

DAX Function Categories

• Predefined Functions: Aggregate, logical, date, information, and user functions.
  • e.g., Sum, Average, Year, Month.
• DAX Statements: Logical flow with IF and SWITCH.
• Data Retrieval Functions: Used in query editors.

Using DAX for Calculations

• Calculated Measures: Sum of values like total quantity or average days for delivery.
• Advanced Logic: Use IF and SWITCH for conditional logic in calculations.
• Time Series Functions: Includes functions like Year-to-Date (YTD) and Same Period Last Year for time-based analysis.

Best Practices for Writing DAX

• Simplicity: Keep formulas simple for better performance.
• Use Measures: Prefer measures over calculated columns for reusable calculations.
• Check Relationships: Understand how filters and relationships affect results.

Advanced Concepts

• Context Understanding: Row context and filter context (key to mastering DAX).
• Calculated Tables: Creating and utilizing calendar tables for time intelligence.

Visualizations and Dashboards

• Creating Visuals: Implementation of measures in dashboards to visualize key insights.
• Time Series Analysis: Visualize trends over time with DAX-calculated measures.

Conclusion

• Encouragement to explore more certification programs for mastering PowerBI and other domains.
• Providing links to further resources for continued learning and certification.

This summary captures the essential details and highlights the benefits and applications of DAX within PowerBI from this extensive video tutorial.