Now that you should be more comfortable working within the Power Query Editor, let's take the next step in working with it. Often, you will find the need to go beyond these basic transforms when dealing with data that requires more care. In this section, you will learn about some of the more common advanced transforms that you may have a need for, which include Conditional Columns, Fill down, Unpivot, Merge Queries, and Append Queries.
Using the Power Query Conditional Columnsfunctionality is a great way to add new columns to your query that follow logical if/then/else statements. This concept of if/then/else is common across many programming languages, including Excel formulas. Let's review a real-world scenario where you would be required to do some data cleansing on a file before it can be used. In this example, you will be provided a file of all the counties in the United States, and you must create a new column that extracts the...