Power Query (Excel) + M Code | Add Custom Columns (multi) with List. Accumulate and nested M code

This video will show you how to add multiple custom columns in one go, dynamically driven by the input table.
Also, I have demonstrated in the video how to write a nested let expression.

Topic:
0:00 - Intro
0:16 - Overview
0:41 - Example with no condition
2:00 - Example with condition

List.Accumulate Basic Explain:

Workbook:

[Sumanth]

Another great content.. Showing the true potential of M. And the nested let example was nicely slotted in.. brilliant 👏🙂