[benjaminwootton]

Is this a stream of changes to a query?

I know the NoSQL world had some progress in this space. RethinkDB was going in this direction around a decade ago if I recall. I would really like this from a modern relational database or data warehouse though. Polling sucks.

[synthmeat]

You can read more about it here https://www.mongodb.com/docs/manual/changeStreams/

My feeling is that database needs to be built with replication in mind from the get-go to have something like this work well.