I have a requirement in Tableau, wherein I need to save historic data in form of snapshot. So when in future the data changes I have snapshot of my historic data. My concern is if I change the joins between tables that are used in this extract, will the extract work? Or do I need to update the extract again.
example: If I have two tables A and B, when I create the extract the joins I specify is A.id=B.id. But later I wish to change it to A.rowid=B.rowid. I need to maintain the historic data and not update the extract with new records.