In this lesson I will show you how and when to use Keep/ remove columns transformations in Power Query.
In this lesson we talk about what a custom column transformation does and go through some examples.
In this lesson I go through how to do proper casing and remove underscores on column headers.
In this lesson we will go through the M value Date.
In this lesson we will go through the contents of the M expression module
In this lesson we will go through how to write recursive M functions.