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I am giving a simplified example, but the principle is the same for my problem. In the end I show you my actual case with a screenshot.

There are 100 municipalities. Their borders divide land data. Within each muncipality, there is 10 categories of land use, represented by 10 polygons that are multipart. So there are a total of 1000 polygons in the whole layer. The polygons have an ID-column with ID-numbers (1-100) representing each municipality, and they also have a land use column that show which kind of land use type each polygon is (1-10).

I also have table imported from Excel. It has one column with land use types 1-10 and one column with the same ID-numbers for each municipality (1-100). Is also has 10 columns for each land use type, which shows kg of wood that can be found in each land use type. That means that for each municiaplity, you can find different kg of wood, even though the land use type is the same.

My problem is that when I try to Join Field, I can only choose one column from the table to join the layer. I would like to also join the values of of kg of wood so that they match the land use type in each municipality. I am a newbie to ArcGIS Pro, and don't know to solve it.

Below a picture is added showing happened when I used Join Field without success (in my real case). To the right are six land use types that shows values in kg (phosphorus). The SUBID2016 is the ID-number column and the DETALJTYP column is the land use type column.

enter image description here

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As long as all your data sits within the same file geodatabase (so you will need to import your Excel file into it as a table) you can use the Make Query Table tool to join on multiple fields. It's a very powerful tool but takes a little effort to play with the parameter settings and actually take the time to read the help file to understand what is what.

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  • Hey! Thanks for your response. This task seems rather daunting because I am on a short deadline. It seems I have to learn how to create an enterprise database to begin with. If pro.arcgis.com/en/pro-app/latest/tool-reference/data-management/… Is there no simpler way to do this? O.O'
    – gremol
    Commented Mar 17, 2022 at 0:37
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    @mentace - My mistake its the Make Query Table tool, I have updated my answer to link to the correct tool. No need to be using Enterprise Databases, can be done in a file geodatabase.
    – Hornbydd
    Commented Mar 17, 2022 at 1:16
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A few years ago I had this problem. Searching on internet I found and for me it worked!! https://esriaustraliatechblog.wordpress.com/2015/06/22/spatial-joins-hidden-trick-or-how-to-transfer-attribute-values-in-a-one-to-many-relationship/#comments

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    – Community Bot
    Commented Mar 10, 2023 at 10:06
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    A mere link to an off-site solution is not an acceptable answer on this site. Please at least summarize what's behind the link.
    – tripleee
    Commented Mar 10, 2023 at 10:08

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