You have to move your data to Dolt. Dolt is a database. It's got its own storage layer, query engine, and query parser. Diff queries are fast because of the way the storage layer works.

Right now, Dolt can't be distributed (ie. data must fit on one hard drive) easily so it's not meant for big data, more data that humans interact with, like mapping tables or daily summary tables. But, long term if we can get some traction, we plan on building "big dolt" which would be a distributed version that can scale to as big as you want.