Hello @Bommisetty, Rakesh (Hudson IT Consultant)
Currently we don't have the flexibility to point to data source which is in on premise. If you have such requirement you need to bring the data to azure, to either ADLS or AZ. SQL and then use it in the data flow.
On the other hand, you could follow the steps in this video or the documentation here
For more details: https://techcommunity.microsoft.com/t5/azure-data-factory-blog/new-data-flow-connector-sql-server-as-source-and-sink/ba-p/2406213
But it would be much easier to go with the first option, to move data from on Prem to azure storage/SQL. And then do the transformation using data flow.
Please let us know if you have further questions
BR