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Power Platform Community / Forums / Power Automate / Group Child Records by...
Power Automate
Suggested Answer

Group Child Records by Parent Name in Power Automate – How to Reduce Execution Time?

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Posted on by Gowtham_TheCute 16

I want to achieve the following:

  1. Group all child records (Table B) by their respective ParentName (from Table A).
  2. Display child records below their corresponding ParentName.
  3. Continue processing for the next parent name and its related child records.

Issue:

The current flow I have created takes a long time to complete when processing large data sets. This is impacting performance significantly.

Flow Details:

  • I am using [brief description of actions in the flow, e.g., "Filter array," "Apply to each," etc.].
  • The number of parent records in Table A is approximately [number].
  • The number of child records in Table B is approximately [number].

Screenshots:

Question:

Can anyone suggest a better approach or optimization techniques to:

  1. Reduce the execution time of this grouping process?
  2. Make the flow more efficient for large datasets?

Any insights or alternative methods are highly appreciated! 😊

Thanks in advance!

Flow 2.png
Flow 1.png
fLOW 4.png
Categories:
General topics
I have the same question (0)
  • lbendlin Profile Picture
    lbendlin 8,701 Super User 2026 Season 1 on at
    What's the expected output of the flow? Is that something you can do directly in Dataverse?
  • Suggested answer
    Zdenka_Cech Profile Picture
    Zdenka_Cech 101 on at
    Hi there, 
    I suggest to use Select action for both parent and child tables. In select just add fields/columns you want to process. 
    From Parent Select output create an array of unique of 'Parent' values.
    Then you can loop in Do-Until action the parent unique values and use Filter action of the selected 'Child table' and continue with your actions on filtered child items.
    Maybe  you would like to create an objects and use select action with Coalesce as discussed here https://www.youtube.com/watch?v=R_bD8nAoJ8Y then you can continue on actions.
    Depending on what is the output you want to achieve.
     
    *Z
  • Gowtham_TheCute Profile Picture
    Gowtham_TheCute 16 on at
    @lbendlin At the end I want to produce the html with my desired format then converting into pdf like rthis below

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