An Azure service for ingesting, preparing, and transforming data at scale.
Hello Saurav !
Thank you for posting on Microsoft Learn Q&A.
You can’t truncate a Dataverse table because it doesn’t support TRUNCATE so you have to delete rows.
If you specifically want to use a data flow, you can mark every row for delete and let the Dataverse/Dynamics 365 sink remove them.
For large volumes, it’s usually faster to submit a BulkDelete job through the Dataverse Web API from an ADF pipeline.
https://blogs.perficient.com/2021/02/16/power-platform-dataverse-cds-bulk-record-deletion/