[marcosdumay]

Postgres has plugins for running the entire backend.

People don't like it for a lot of reasons. Making privilege escalation harder is a big one, but also, all the CPU (and memory) load on serializing that data is CPU that could be used managing the distributed processes problems that only the DBMS can solve.

Personally, I think access management on those tools needs to improve a lot before they get usable. But also, the data-oriented languages have some issues, and the non data-oriented ones don't gain much by running inside the database.

IMO, we are missing a really good data-oriented language. But I don't see any gain from running it inside the database.