Business Intelligence with Microsoft Power BI - with Material - Introduction to M Language

The video tutorial introduces M language and its application in Power Query for data transformation. It demonstrates how to use Power Query Editor to automatically generate steps and apply M functions. The tutorial also covers the Advanced Editor, explaining how to write and modify M code. Finally, it shows how to share and reuse queries by copying code from the Advanced Editor.

What is the primary purpose of the M language in Power Query?

• To write complex SQL queries

• To perform data transformations

• To create visualizations

• To design user interfaces

How are steps recorded in Power Query when you apply changes to data?

• They are downloaded from the internet

• They are imported from Excel

• They are automatically generated

• They are manually entered by the user

What does the 'Table.AddColumn' function do in Power Query?

• Sorts the data

• Adds a new column

• Filters the data

• Deletes a column

In the Advanced Editor, what does the 'let' keyword signify?

• The start of a new query

• The definition of functions and variables

• A comment in the code

• The end of a query

What is the benefit of using the Advanced Editor in Power Query?

• It provides a list of available datasets

• It enables direct editing of M code

• It allows for the creation of charts

• It offers a preview of data transformations

How can you share a Power Query with a colleague?

• By taking a screenshot

• By exporting it as a PDF

• By copying and pasting the M code

• By sending the entire Excel file

What happens when you paste M code into a new blank query in Power Query?

• The data is exported to Excel

• The original data is deleted

• The steps are automatically generated

• The query is saved as a template