From the course: Excel: Power Query (Get & Transform)

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Joins: Left or right

Joins: Left or right - Microsoft Excel Tutorial

From the course: Excel: Power Query (Get & Transform)

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Joins: Left or right

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Let me ask you this. Based on what you understand about queries and we have these two datasets; RSVP, registered, and the session they registered for. And then we have the dataset for who actually attended and which session they attended. If I want the NoShows, what type of join do I need? I'm asking about the people who RSVP'd but did not show up. Think about it. Which joint do I need? What did you come up with? The answer is an anti-join. Left or right doesn't matter. And this is why you really need to get intimate with these joints because you get to choose the left or the right. This data is set up with the RSVPs on the left, the attendances on the right, and I already have my queries. Look at this data, queries, and connections. I've got sessions and RSVP. Now, I am going to fish out the NoShows. Get data. Combine queries. Merge. I am going to put sessions on the top. RSVPs on the bottom, match up the names and because I want the NoShows, I want everybody who RSVP'd, which is my…

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