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elshadlive
Frequent Visitor

How to join non-primitive array values using expression

Hi,

An "Employees" field from Sharepoint list returns an array of JSON datatype, as follows:

 

[{
  "DisplayName": "John Doe",
  "Department": null,
  "JobTitle": null
}, {
  "DisplayName": "Mary Jane",
  "Department": null,
  "JobTitle": null
}]

 

In the next step, this field value inserted in Excel.

What I need is to join in one string only DisplayName values separated by a semicolon, like: "John Doe, Mary Jane"

I am able to get DisplayName value using index numbers:

 

triggerBody()?['Employees'][0]?['DisplayName']
// returns: John Doe

 

I can also concatenate several array indexes, but I don't know in advance how many elements will be in an array.

How can I join values from an array using expressions (formulas) only? Maybe some additions to join function will help? I tried the next one, but it didn't work

 

join(triggerBody()?['Employees']?['DisplayName'], ';')

 

 

1 ACCEPTED SOLUTION

Accepted Solutions
v-bacao-msft
Community Support
Community Support

 

Hi @elshadlive ,

 

Please try the following configuration:

59.PNG60.PNG

 

Best Regards,

Community Support Team _ Barry
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

View solution in original post

4 REPLIES 4
v-bacao-msft
Community Support
Community Support

 

Hi @elshadlive ,

 

Please try the following configuration:

59.PNG60.PNG

 

Best Regards,

Community Support Team _ Barry
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

@v-bacao-msft thank you for your reply.

Can I do the same without using Activities, but using WDL inline expressions instead? I am not familiar with WDL and not sure if there is some iteration operator.

I have about 30 columns from Sharepoint list, which must be read and then mapped (written) to Excel sheet. The field in a subject is only one of multiple array fields. Creating multiple Activities for each of those fields will be a nightmare.

So, I am looking for a solution of converting multi-valued arrays to strings on mapping level for each field.

fieldsList.png

Assuming that I have to make different conversions and calculations on most of these fields I'd be grateful if you could suggest "coding way" of manipulating data instead of using Activities (of course within possibilities of the platform).

On top of my mind I am thinking about something like:

join(createArray(triggerBody()?['Employees'](ApplyForEachOperator)['DisplayName']), ';')
or
triggerBody()?['Employees'](SelectFunction)['DisplayName']

// triggerBody()?['Employees'] is my array field

where ApplyForEachOperator and SelectFunction keywords are iteration or selection operators

Any suggestions?

 

Hi @elshadlive ,

 

Unfortunately, as far as I know, the WDL function does not contain a function can be used to iterate items in an array.

So we only can use Apply to each to iterate items in Power Automate.

 

Best Regards,

Community Support Team _ Barry
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

@v-bacao-msft thanks for the reply. I'll dig deeper and look for a maximum minimalistic solution. I'll post here if any success.

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