The genesis of this post is: Dave DeWitt sent me a paper about Microsoft Polybase. I argued with Dave about the differences between Polybase and Hadapt. I asked Daniel Abadi for his opinion. Dan agreed with Dave, in a long email … … that he graciously permitted me to lightly-edit and post. I love my life. Per Daniel (emphasis mine): I basically agree with what MSFT says in the paper about how Poly