Yes please! A couple years ago I wrote a sql-like layer to federate queries across a couple different databases, with the intent of unifying the data we had spr

Yes please! A couple years ago I wrote a sql-like layer to federate queries across a couple different databases, with the intent of unifying the data we had spread out over postgres, cassandra and S3. The best decision I made was not writing a real query parser and just using s-expressions, which is pretty much what you're asking for. It was great.