Introduction:

In order to get details of related entity for the selected entity without separate retrieve call we can leverage Expand Query .As a business scenario for the same vaccination use case extracting details of accounts that are present in list of contacts who took vaccination.       

Step 1:

Login to the required Power Apps environment using URL make.powerapps.com by providing username and password and click on Flows on the left-hand side as shown in the below figure.

Step 2:

After Step 1, Click on New Flow and select instant cloud flow and provide the trigger as Manually trigger a flow and click on Create as shown in the below figure.

Step 3:

After Step 2, name the flow as List Rows – Expand Query take another step  and take initialize variable and name it as Initialize variable – Set ConsolidatedDetails Array  and provide inputs like below

Name : ConsolidatedDetails

Type : Array

Value :

as shown in the below figure.

Step 4:

After Step 3, select new action and under Data verse Connector and select action List Rows and name it as List rows – Contacts on the contact entity and provide the following inputs as below

Table name : Contacts

Select columns : fullname,telephone1,contactid,_parentcustomerid_value

Filter rows : (cr5bc_vaccinationcompleted eq true) and (parentcustomerid_account/accountid ne null)

Expand Query : parentcustomerid_account($select=address1_city,address1_composite,websiteurl,name)

as shown in the below figure.

Step 5:

After Step 4, Take Apply to Each Action and provide value as

outputs(‘List_rows_-_Contacts’)?[‘body/value’]

And take Set Variable name it as Append to array variable and provide the following values as

Name : ConsolidatedValues [ Select Initialize Array variable from Drowdown]

Value :

{

  “Customer Name”: items(‘Apply_to_each’)?[‘fullname’],

  “WebSiteUrl”: items(‘Apply_to_each’)?[‘parentcustomerid_account/websiteurl’],

  “TelePhone”: items(‘Apply_to_each’)?[‘telephone1’],

  “AccountName”: items(‘Apply_to_each’)?[‘parentcustomerid_account/name’],

  “Account City”: items(‘Apply_to_each’)?[‘parentcustomerid_account/address1_city’]

}

as shown in the below figure.

Step 6:

After Step 5, save, test, and run the flow and observe the details as shown in the below figure.

Note:

  1. One can easily form expand query by the use of XRM Tool Box ,Fetchxml Builder and form fetchxml with link-entity and then click on View -> Power Automate Parameters -> Power Automate List Records Parameters popup and under Expand Query click on the content link where query is there so that you can copy the query and go to Step 4 and provide Expand Query as shown in the below figure.
  • Make sure to saveand run flow.
  • Microsoft Documentation Details about expand query  can be found here .

Conclusion: In this way one can easily extract  details  of related entities linked to the base entity using expand query.