Project Maestro demo from the December 2017 TUG @ Capella.
Buyer beware...Tableau is making rapid changes to this product so the information in the deck and associated demo could be out of date quickly. For example, even in the week since the TUG, Tableau has released a new beta version in which you can export your results to csv format. Your best bet is to sign up for the beta so you can stay up to speed on its capabilities. Happy ETLing!