[PL-300] 11, Creating and Transforming Columns

This podcast is made by Ran Chen, who holds an EA license, Insurance and Securities licenses (Series 6, 63, 65), and the CFP® designation. He is passionate about opening access to high-quality exam preparation resources and helping learners prepare more effectively for professional certification exams. In this episode you will learn: - How to distinguish between Power Query transformations and DAX calculated columns for optimal Power BI performance - How to utilize conditional, custom, index, duplicate, split, and merge column features in Power Query - How to apply extract, replace, and format text operations accurately during data preparation - Key exam traps regarding transforming existing columns versus adding new columns in Power Query - A memorable mental shortcut to instantly identify the right architecture on PL-300 scenario questions For more free exam prep tools, practice questions, and AI-powered explanations, visit https://open-exam-prep.com/ or YouTube Channel: https://www.youtube.com/@Open-exam-prep