I had a truly magical experience talking to an engineer at Mongo during our sales experience with them. This guy was some sort of super SE. We had a short li

I had a truly magical experience talking to an engineer at Mongo during our sales experience with them. This guy was some sort of super SE. We had a short list of things we simply could not make it do very quickly. He proceeded to tell us how no database could do those things quickly and they were fundamentally broken things to do anyways... (query where property x != y or x doesn't exist was one I can think of) PostgreSQL and Vertica did them all, radically faster than Mongo did.