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Add Column in Power Query based on values in related table
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Michael Karampatos

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April 26, 2023 - 12:24 am
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I have to preface with I'm new to M language and Power Query.

I have two tables: LAPTOP INVENTORY and RETIRED LAPTOPS. The two tables have a "Serial#" relationship.

What I want to do is ADD COLUMN to LAPTOP INVENTORY table indicating whether the laptop has been retired, based on Serial# lookup in the RETIRED LAPTOPS table. It must be simple but I struggling with it.

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Riny van Eekelen
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April 26, 2023 - 1:17 am
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Ask for a simple solution and you'll get one 🙂

I merged (Left Outer join) the Laptop table with the Retired table and expand. All rows with a serial number in the Retired column are retired. All with null are not.

See attached and come back here if you get stuck.

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Michael Karampatos

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April 27, 2023 - 1:01 am
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Thanks Riny, it works for me.

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