Data Transformation Part 4: Merging, Appending & Aggregations

Final session of our Data Transformation series! Today we learned how to combine multiple tables and create summaries. 📚 WHAT WE COVERED: Merging Queries: - Different join types (Left, Right, Inner, Full Outer) - Connecting tables based on common columns - Real scenarios: Sales + Customers, Products + Categories Appending Queries: - Stacking tables together - Combining multiple files into one - Real scenarios: Monthly files, Regional data 🎉 TRANSFORMATION SERIES COMPLETE! Sessions 6-9 covered: Text transforms, Pivot/Unpivot, Dates/Conditionals, Merging/Appending Next Week: Building Your First Real Visuals! 📚 PLAYLIST: https://youtube.com/playlist?list=PLRWfR6wwyvEbCxnM1gzc9GIR_k20EBh9i #PowerBI #MergeQueries #AppendQueries #PowerQuery #DataTransformation