Greg Deckler is a 7-time Microsoft MVP for Data Platform and an active blogger and Power BI community member, having written over 7,500 solutions to community questions. Greg has authored many books on Power BI, including Learn Power BI 1st and 2nd Editions, DAX Cookbook, Power BI Cookbook 2nd and 3rd Editions and Mastering Power BI 2nd Edition along with Definitive Guide to Power Query (M). Greg has also created several external tools for Power BI and regularly posts video content to his YouTube channels, Microsoft Hates Greg and DAX For Humans Rick de Groot was born in the Netherlands and has been working in BI for more than 14 years. He went freelance in 2016 and now works as an independent Power BI consultant. On his mission to make Power BI more accessible, he started two blogs: BI Gorilla and PowerQuery. how, and a YouTube channel sharing Power Query and Power BI content. His commitment to offering free content through multiple platforms has led him to earning the Microsoft Data Platform MVP award for two consecutive years. Melissa de Korte's approach to facing challenges is fueled by relentless curiosity. She is a dedicated community member and content creator. Her portfolio includes blogs, tutorials, courses, and webinars, that make Power Query M more accessible and useful for all. Behind her professional persona lies a genuine dedication to empowering others through education and knowledge sharing, and a desire to encourage professionals to embrace the potential of Power Query, M.