Funnily enough, I wrote a paper on this topic when I was in grad school. It's not on our short-term roadmap at ReadySet, but this idea is certainly compatible with the underlying dataflow model. I'd love to hear more about what you had in mind here, shoot me an email at alana@readyset.io
https://people.csail.mit.edu/malte/pub/papers/2019-hotos-mul...