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Power Apps
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delegation warning

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Posted on by 141

norashura_2-1696227862082.png

Hello everyone,
im having a delegation issue when im displaying my SP list in the gallery , i got delegation warning saying that the higlighted part of this formula might not work correctly with large data

 

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  • AndrewR1 Profile Picture
    1,572 Moderator on at

    Hi @norashura the in operator is a none delegable operator and this is why your getting a delegation issue:

     

    A delegation warning isn't necessarily a bad thing - see this documentation - it's a warning to make sure you are getting the results you want without adversely affecting app performance. In short, all apps have a limit applied to the number of rows they can retrieve from a data source for performance reasons. Delegation is the ability to get the server to do some or all of your querying work before it sends your app those rows, therefore allowing you to potentially query many more rows than the app limit (500-2000 depending on the app settings). If you won't have that many rows in your data source ever, you can simply ignore a delegation warning.

     

    Please click Accept as solution if my post helped you solve your issue. This will help others find it more readily. It also closes the item. Remember, you can accept more than one post as a solution. If the content was useful in other ways, please consider giving it Thumbs Up.

  • norashura Profile Picture
    141 on at

    by using current formula to filter, i was wondering if i have more than 2000 rows in the future , will it affect my data processing operation?

  • AndrewR1 Profile Picture
    1,572 Moderator on at

    Hi @norashura 

    In short yes but I wanted to bring to your attention a potential concern related to the data row limit in your applications. If your applications exceed this limit, it may have an adverse impact on the number of records that can be retrieved from your data source into your application.

     

    AndrewR1_1-1696315061699.png

     

     

    To mitigate this issue, I would recommend exploring an alternative approach by utilizing Power Automate and implementing a batch processing mechanism to transfer the data into a collection within your application.

    Here is my primary advice: As long as the number of records you are collecting remains below the data row limit, you should not encounter any issues.

     

    However, if you anticipate exceeding 2000 records, I strongly advise exploring alternative data gathering methods or revisiting your filtering criteria to eliminate the use of the "in" operator, as this specific part of your code is non-delegable.

     

    To enhance your awareness of this matter in future development, I suggest initially setting the data row limit to 1. This way, if any delegation issues arise, they will become readily apparent as you will observe only one record displaying in your application.

     

    Please click Accept as solution if my post helped you solve your issue. This will help others find it more readily. It also closes the item. Remember, you can accept more than one post as a solution. If the content was useful in other ways, please consider giving it Thumbs Up.


    Thanks
    Andrew

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