Articles

Power Query Performance: Master Folding, Buffering & Optimization Techniques

Learn how query folding works, when Power Query buffers data, and optimization techniques that transform slow refreshes into lightning-fast data pipelines. Essential skills for building scalable Power Query solutions.

Loading Data from APIs and Web Pages with Power Query

Master advanced techniques for building robust, automated pipelines that extract data from any web source, handle authentication complexities, and maintain themselves even when APIs evolve.

Power Query Best Practices for Maintainable ETL

Build Power Query ETL solutions that your future self will thank you for. Learn modular design, parameter management, error handling, and testing strategies that create robust, scalable data pipelines.

Power Query Best Practices: Building Maintainable ETL Solutions That Last

Learn the essential practices that separate professional Power Query ETL from fragile scripts. Master organization, naming, error handling, and performance optimization for solutions that work reliably for years.

Parameterized Queries and Dynamic Data Sources in Power Query

Master advanced Power Query techniques for building flexible, scalable data solutions that adapt to different environments, schemas, and business requirements through intelligent parameterization.

Working with Dates and Text in Power Query: Advanced Transformation Techniques

Master Power Query's text and date functions through practical examples. Learn to parse multiple date formats, clean messy text data, and optimize performance for production workflows.

Master Custom Columns and Conditional Logic in Power Query

Learn to create powerful conditional logic and custom columns in Power Query that automatically categorize data, apply business rules, and calculate derived values. Transform raw data into actionable insights with practical, real-world examples.

Cleaning Messy Data with Power Query: Nulls, Errors, and Type Conversions

Master advanced Power Query data cleaning techniques including error propagation systems, sophisticated null handling strategies, and performance-optimized type conversions for enterprise-scale data pipelines.

Combining Data from Multiple Sources with Append and Merge Queries in Power Query

Master the essential techniques for combining disparate data sources into unified datasets using Power Query's append and merge operations, with real-world examples and performance optimization strategies.

Power Query Transformations: Split, Merge, Pivot, and Unpivot - Advanced Techniques

Master Power Query's core transformation operations with advanced patterns for split, merge, pivot, and unpivot. Learn performance optimization, edge case handling, and enterprise-scale implementation strategies.

Getting Started with Power Query: Master Connect, Transform, Load for Real-World Data

Learn to build automated data preparation pipelines with Power Query. Connect to multiple sources, apply transformations that handle messy real-world data, and load results efficiently for analysis and reporting.

Combining Multiple Files from a Folder