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I have excel file containing lacs of records I have stored this into qvd and then now I am reloading from QVD.
Now I want to apply incremental load for this excel sheet I have filename() as PK.
( All data pull into alldata.qvd & Suppose user has modified Sep1.xlsx file and send again then I want to delete existing records from alldata.qvd for sep1.xlsx and append new Sep1.xlsx file)
Please share demo or give idea how to do this .