The CLI usability was one of the aims behind [prql-query (pq)](https://github.com/prql/prql-query/). sqlite integration was on the roadmap but unfortunately that project has been largely unmaintained by me for the past 6 months. (This is just referring to prql-query and not PRQL which is under very active development.)

I'm working on a new project which will do exactly this (and a lot more!) which I hope to release next week. I'll drop the link here when that's ready.