How to extract values from a specific field and separate them by commas

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Posted on 21 Nov 2024 14:54:24 by FlowFalcon

102

Hi Everyone!!

I have a 'Filter Array' action in Power Automate where I am extracting values from a specific field in the resulting array.
Below is an example of the filtered data I get back:

{
    "body": [
        {
            "ItemInternalId": "abc12345",
            "Contractor Name": "John Doe",
            "Assigned Enterprise ID": "john.doe",
            "Assignment ID": "12345",
            "Status": "Active",
            "Assignment Work Country": "Country A",
            "Project Name": "Project A",
            "Client Name": "Client A"
        },
        {
            "ItemInternalId": "xyz98765",
            "Contractor Name": "Jane Smith",
            "Assigned Enterprise ID": "jane.smith",
            "Assignment ID": "67890",
            "Status": "Active",
            "Assignment Work Country": "Country B",
            "Project Name": "Project B",
            "Client Name": "Client B"
        }
    ]
}

From this, I want to extract only the 'Assignment ID' values and return them as a string separated by commas, like this:

12345, 67890.
How can I achieve this in Power Automate? I'm looking for a solution that directly extracts these values and formats them as a comma-separated string.

Thank you for your help!

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Business Process Flows

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Chriddle 7,738 Super User 2025 Season 1 on 25 Nov 2024 at 08:35:56

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How to extract values from a specific field and separate them by commas

...or just use an expression to replace the filter etc. (assuming you are only filtering for items whose contractor names are not empty):

join( xpath( xml(json(concat('{"Root":{"Item":', outputs('Compose'), '}}'))), '//Item[Contractor_x0020_Name !=""]/Assignment_x0020_ID/text()' ), ', ' )
FlowFalcon 102 on 23 Nov 2024 at 19:04:25

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How to extract values from a specific field and separate them by commas

Thank you, RaulLessa

I encountered an error in the select step due to the ".body" in step #2. The error was as follows:

"The template language expression 'outputs('Compose').body' cannot be evaluated because property 'body' cannot be selected. Array elements can only be selected using an integer index."

The solution was to remove ".body," so the expression ended up as: outputs('Compose').
RaulLessa 2 on 21 Nov 2024 at 18:55:49

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How to extract values from a specific field and separate them by commas

Hello!
Here is the solution to extract only the 'Assignment ID' values and return them as a string separated by commas:

Step 1: Add your JSON to a Compose action.

Step 2: Add a Select action and populate the fields as follows:

From: outputs('Compose').body

Map: item()?['Assignment ID']

Step 3: Add a Join action. In the From field, add the output of the Select action: body('Select').

And Join with field add ", "

Final Result:

Hope this helps!

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