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Dynamics 365 Community / Forums / Finance | Project Operations, Human Resources, ... / ER - Join VS relation
Finance | Project Operations, Human Resources, ...
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ER - Join VS relation

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Posted on by Pranav Teja 264
hi Experts,
 
Can anyone clarify the advantage of using join. 
 
Taking an example of dumping all purchase order lines with a couple of fields from PO header, we can very go to relations of Purchline and navigate to Purchtable to map those fields.
 
Pranav
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Dynamics 365 Finance
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  • Verified answer
    CA Neeraj Kumar Profile Picture
    CA Neeraj Kumar 5,135 Super User 2026 Season 1 on at
    Hi Pranav,
     
    When you use join, it run at SQL query level which is much faster than using the relations. I have explained the same in one of my video (at present it is kept under membership by the owner - https://youtu.be/74xwJNqXlMM?si=oQenGT_nHmokf77j
     
     
    So, it is always preferrable to use Join to maximum extend and ensure that it is runninn in SQL level rather than memory. You can refer this article as well to understand the difference between memory and SQL query level. https://learn.microsoft.com/en-us/dynamics365/fin-ops-core/dev-itpro/analytics/er-calculated-field-ds-performance?context=%2Fdynamics365%2Fcontext%2Fcommerce
     
    In case of further query, please us know,
     
    Regards,
    Neeraj Kumar
    Author of the Book - Electronic reporting - The Hidden Gem

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