Showing results for 
Search instead for 
Did you mean: 
Not applicable

How to perform on-the-fly JSON queries

I have a flow which assigns values in a Select action, and some of these values need to be referenced from a JSON object. For example, suppose I need to look up the value corresponding to ID="1" and Month="2021-01" from the JSON object below.

    "ID": "1",
    "Months": [
      {"Month": "2021-01", "Value": 123},
      {"Month": "2021-02", "Value": 456}
    "ID": "2",
    "Months": [
      {"Month": "2021-01", "Value": 654},
      {"Month": "2021-02", "Value": 321}

 How would I do this? The following expression comes to mind.


But how do I specify which ID and Month to look at? Since a Select action does not live inside an Apply to Each loop, it's looking at all the values at once. Also, there are thousands of objects being handled by the Select action, so using an Apply to Each with filters would take a very long time.



Hi @Anonymous 


You can try use ‘Compose’ to assign values instead of ‘Select’.


The following flow is for your reference:


The dynamic content ‘Outputs’ is from ‘Compose’.


The expression used in ‘Apply to each 2’ is:



The expression used in ‘Compose 2’ is:




The inputs in ‘Compose 2’ is:






The running result of the flow is:



If you still have the problem, please feel free to let me know.


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

Hi, @v-yiwenxie-msft .

I'm not sure I follow... I have two JSON objects: one returned by a List rows present in a table action (let's call this Array A) and one returned by a Get file content action (let's call this Array B). The JSON array in my example above is Array B, and it is the array from which I need to look up the values. The JSON array to which I am applying the Select action is Array A, and it needs values from Array B.

Array A has thousands of objects in it, and it would be impractical to use an Apply to each action to loop through all of them to perform the lookup from Array B. It would simply take too long. I was hoping there was an expression I could put in the Select action's Value field that would perform the lookup from Array B all at once.

For example, my Select action would include the following key-value pairs...

  • Key: Month, Value: 2020-01 (from Array A)
  • Key: ID, Value: 2 (from Array A)
  • Key: Value, Value: 654 (this is the lookup I want to do from Array B)

My goal is to get this information into a single array quickly, so I do not need to perform time-consuming Apply to each and Filter actions later in the flow. By comparison, the Select action is very fast; I just don't know how to perform lookups from the Value field of that action.

Hi @Anonymous 


Could you show me the detailed result you want to get from 'Select'?

And could you take a screenshot of your detailed flow with private info covered up?

Thank you for your cooperation.


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


@v-yiwenxie-msft, here are screenshots from the relevant part of the flow...

Screenshot 2021-03-10 120019.png


Screenshot 2021-03-10 120228.png


Screenshot 2021-03-10 120306.png


Screenshot 2021-03-10 120343.png


I want to add another key-value pair to that select action, such that the key would be "MarketCategory" and the value would be looked up from the Parse market categories JSON action near the top using a substring from the "Account" value.

The two issues I'm running into here are these...

  1. The "Account" value is taken from a column in the Excel table whose name can't be used in an expression, because of the presence of strange characters (Windows won't let me take a screenshot of the tooltip showing the full column name; the tooltip disappears).
  2. Even if I was able to extract the substring from the account value, I don't know how to use an expression in the Select action to look up the substring from the market categories JSON.

Here is the form of the market categories JSON...

    "Companies": [
            "Market": "Market A",
            "Code": "157",
            "Category": "Category A"
            "Market": "Market B",
            "Code": "140",
            "Category": "Category A"
            "Market": "Market C",
            "Code": "607",
            "Category": "Category B"

Suppose the account substring corresponding to the "Code" is "140." Then, I want to write an expression which looks up Code=140 from the above JSON, and then returns Category="Category A." This returned value would be used as the value for the key "MarketCategory."


This can be done using an Apply to each action, but that would take a very long time, given the number of items extracted from the Excel table.

Hi @Anonymous 


I’m afraid currently, Power Automate doesn’t support looking up specific value for a property which is not in one array except using ‘Apply to each’.

But there is a workaround for your problem if I’ve not misunderstood your need.

In my understanding, you want the flow to look up a specific value for the property ‘Code’ and return its value for the property ‘Category’.


Then the following steps are for your reference:

In my flow, I want to return the value of ‘Category’ for the value of ‘Code’ which is ‘140’.

And I’ve run the test successfully.



The ‘Compose’ is:



The functions used in all these ‘Composes’ are:







For more info about the functions used above:

string()  indexof()  substring()  replace().


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


Helpful resources


Community will be READ ONLY July 16th, 5p PDT -July 22nd

Dear Community Members,   We'd like to let you know of an upcoming change to the community platform: starting July 16th, the platform will transition to a READ ONLY mode until July 22nd.   During this period, members will not be able to Kudo, Comment, or Reply to any posts.   On July 22nd, please be on the lookout for a message sent to the email address registered on your community profile. This email is crucial as it will contain your unique code and link to register for the new platform encompassing all of the communities.   What to Expect in the New Community: A more unified experience where all products, including Power Apps, Power Automate, Copilot Studio, and Power Pages, will be accessible from one community.Community Blogs that you can syndicate and link to for automatic updates. We appreciate your understanding and cooperation during this transition. Stay tuned for the exciting new features and a seamless community experience ahead!

Summer of Solutions | Week 4 Results | Winners will be posted on July 24th

We are excited to announce the Summer of Solutions Challenge!    This challenge is kicking off on Monday, June 17th and will run for (4) weeks.  The challenge is open to all Power Platform (Power Apps, Power Automate, Copilot Studio & Power Pages) community members. We invite you to participate in a quest to provide solutions to as many questions as you can. Answers can be provided in all the communities.    Entry Period: This Challenge will consist of four weekly Entry Periods as follows (each an “Entry Period”)   - 12:00 a.m. PT on June 17, 2024 – 11:59 p.m. PT on June 23, 2024 - 12:00 a.m. PT on June 24, 2024 – 11:59 p.m. PT on June 30, 2024 - 12:00 a.m. PT on July 1, 2024 – 11:59 p.m. PT on July 7, 2024 - 12:00 a.m. PT on July 8, 2024 – 11:59 p.m. PT on July 14, 2024   Entries will be eligible for the Entry Period in which they are received and will not carryover to subsequent weekly entry periods.  You must enter into each weekly Entry Period separately.   How to Enter: We invite you to participate in a quest to provide "Accepted Solutions" to as many questions as you can. Answers can be provided in all the communities. Users must provide a solution which can be an “Accepted Solution” in the Forums in all of the communities and there are no limits to the number of “Accepted Solutions” that a member can provide for entries in this challenge, but each entry must be substantially unique and different.    Winner Selection and Prizes: At the end of each week, we will list the top ten (10) Community users which will consist of: 5 Community Members & 5 Super Users and they will advance to the final drawing. We will post each week in the News & Announcements the top 10 Solution providers.  At the end of the challenge, we will add all of the top 10 weekly names and enter them into a random drawing.  Then we will randomly select ten (10) winners (5 Community Members & 5 Super Users) from among all eligible entrants received across all weekly Entry Periods to receive the prize listed below. If a winner declines, we will draw again at random for the next winner.  A user will only be able to win once overall. If they are drawn multiple times, another user will be drawn at random.  Individuals will be contacted before the announcement with the opportunity to claim or deny the prize.  Once all of the winners have been notified, we will post in the News & Announcements of each community with the list of winners.   Each winner will receive one (1) Pass to the Power Platform Conference in Las Vegas, Sep. 18-20, 2024 ($1800 value). NOTE: Prize is for conference attendance only and any other costs such as airfare, lodging, transportation, and food are the sole responsibility of the winner. Tickets are not transferable to any other party or to next year’s event.   ** PLEASE SEE THE ATTACHED RULES for this CHALLENGE**   Week 1 Results: Congratulations to the Week 1 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge.   Community MembersNumber SolutionsSuper UsersNumber Solutions Deenuji 9 @NathanAlvares24  17 @Anil_g  7 @ManishSolanki  13 @eetuRobo  5 @David_MA  10 @VishnuReddy1997  5 @SpongYe  9JhonatanOB19932 (tie) @Nived_Nambiar  8 @maltie  2 (tie)   @PA-Noob  2 (tie)   @LukeMcG  2 (tie)   @tgut03  2 (tie)       Week 2 Results: Congratulations to the Week 2 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge. Week 2: Community MembersSolutionsSuper UsersSolutionsPower Automate  @Deenuji  12@ManishSolanki 19 @Anil_g  10 @NathanAlvares24  17 @VishnuReddy1997  6 @Expiscornovus  10 @Tjan  5 @Nived_Nambiar  10 @eetuRobo  3 @SudeepGhatakNZ 8     Week 3 Results: Congratulations to the Week 3 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge. Week 3:Community MembersSolutionsSuper UsersSolutionsPower Automate Deenuji32ManishSolanki55VishnuReddy199724NathanAlvares2444Anil_g22SudeepGhatakNZ40eetuRobo18Nived_Nambiar28Tjan8David_MA22   Week 4 Results: Congratulations to the Week 4 qualifiers, you are being entered in the random drawing that will take place at the end of the challenge. Week 4:Community MembersSolutionsSuper UsersSolutionsPower Automate Deenuji11FLMike31Sayan11ManishSolanki16VishnuReddy199710creativeopinion14Akshansh-Sharma3SudeepGhatakNZ7claudiovc2CFernandes5 misc2Nived_Nambiar5 Usernametwice232rzaneti5 eetuRobo2   Anil_g2   SharonS2  

Check Out | 2024 Release Wave 2 Plans for Microsoft Dynamics 365 and Microsoft Power Platform

On July 16, 2024, we published the 2024 release wave 2 plans for Microsoft Dynamics 365 and Microsoft Power Platform. These plans are a compilation of the new capabilities planned to be released between October 2024 to March 2025. This release introduces a wealth of new features designed to enhance customer understanding and improve overall user experience, showcasing our dedication to driving digital transformation for our customers and partners.    The upcoming wave is centered around utilizing advanced AI and Microsoft Copilot technologies to enhance user productivity and streamline operations across diverse business applications. These enhancements include intelligent automation, AI-powered insights, and immersive user experiences that are designed to break down barriers between data, insights, and individuals. Watch a summary of the release highlights.    Discover the latest features that empower organizations to operate more efficiently and adaptively. From AI-driven sales insights and customer service enhancements to predictive analytics in supply chain management and autonomous financial processes, the new capabilities enable businesses to proactively address challenges and capitalize on opportunities.    

Updates to Transitions in the Power Platform Communities

We're embarking on a journey to enhance your experience by transitioning to a new community platform. Our team has been diligently working to create a fresh community site, leveraging the very Dynamics 365 and Power Platform tools our community advocates for.  We started this journey with transitioning Copilot Studio forums and blogs in June. The move marks the beginning of a new chapter, and we're eager for you to be a part of it. The rest of the Power Platform product sites will be moving over this summer.   Stay tuned for more updates as we get closer to the launch. We can't wait to welcome you to our new community space, designed with you in mind. Let's connect, learn, and grow together.   Here's to new beginnings and endless possibilities!   If you have any questions, observations or concerns throughout this process please go to   To stay up to date on the latest details of this migration and other important Community updates subscribe to our News and Announcements forums: Copilot Studio, Power Apps, Power Automate, Power Pages

Users online (1,957)