Cannot retreive more than 2000 rows without a unique ID in Salesforce Connector.

art_in_sky

I am trying to extract data from a tabular report in salesforce which has almost 155,550 rows. I am unable to retrieve the data as it requires a unique ID, My report does not seem to have a unique ID column. Without unique ID I can only fetch 2000 rows. How would I be able extract the entire data without unique ID, The report is a standard report from Salesforce formed from custom objects.