If Postgres was already horizontally scalable and supported incrementally maintained recursive CTEs (like Materialize can do) then I could see how Rama would be

If Postgres was already horizontally scalable and supported incrementally maintained recursive CTEs (like Materialize can do) then I could see how Rama would be mostly uninteresting to a seasoned SQL developer, but as it is I think Rama is offering a pretty novel & valuable set of 3GL capabilities for developers who need to build scalable reactive applications as quickly as possible. Capabilities which other SQL databases will struggle to match without also dropping down to 3GL APIs. > A purely relational database that jettisons SQL doesn't have to have the limitations the author is poking at. Agreed. Relational databases can take us a lot further yet.