Adf script activity inner join from different linked service

Pankaj Joshi 391 Reputation points
2025-08-06T14:47:23.52+00:00

I have two Iinked service1 - table " Ext_emp" and linked service2 - table "Int_emp". Now I want to combine both this table using inner join and update table "Ext_emp" column " Processed_Flag* based on matching row value. Is it possible to write update query in adf script activity to inner join table from different linked service? Else what is the alternate approach?

Azure Data Factory
Azure Data Factory
An Azure service for ingesting, preparing, and transforming data at scale.
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  1. Nandan Hegde 36,396 Reputation points MVP Volunteer Moderator
    2025-08-06T15:13:37.83+00:00

    Script activity can only map /connect to 1 source/linked service at a time.

    So one cannot join 2 different tables from diff sources via a script activity.

    You can use ADF dataflow activity and use Join transformation :

    https://learn.microsoft.com/en-us/azure/data-factory/data-flow-join

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