Exactly. Anyone who tries to compare SQL and NoSQL is frankly an idiot. Cassandra is as different from MongoDB as it is from Oracle, Riak, MySQL or SQLite. They all have very different behaviours and many model SQL concepts quite closely. It just doesn't make any sense to group them.

Funnily enough it's always the PostgreSQL community that wants to create this artificial war. It's like they think everything in terms of one or the other when in fact most systems these days are heterogeneous.