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Lists in Power Query

Ed Hansberry makes a list and checks it twice:

Lists in Power Query are something many people know nothing about. Power Query uses them all the time even though you may not realize it, so if you add some List knowledge to your quiver, you’ll be able to kick your Power Query skills up a notch.

In my work, I often see the need for counting words, especially today with so much online data. Perhaps you want to ensure your Amazon product listings have a maximum number of words in the descriptions or you want to count the words in a podcast. The method I’m going to show you will count anything in your data, so you can apply this pattern to any of your datasets.

Also known as map and reduce (but not quite MapReduce).