Change Sets/ Session Support?

[gschleusner]

Is there any chance that Sessions and Change Sets would be added to enable client side diffing and much smaller uploads.

https://sqlite.org/sessionintro.html

They certainly won't work for all kinds of databases but it would be really powerful for datasets that are designed to take advantage.

[justinclift]

Yeah, it's a good idea. @MKleusberg actually wrote a bunch of diff-ing code (in Go) already, which seems to work ok.

We'd probably need to add the same code (but a C++ version) to include in DB4S too, so it knows how to send diffs to the server.