TelegraphCQ was also a fork of PostgreSQL which implemented streamed queries. Not only a white paper. It was way ahead it's time in implementation, maybe it's

TelegraphCQ was also a fork of PostgreSQL which implemented streamed queries. Not only a white paper. It was way ahead it's time in implementation, maybe it's dead by now. They still have the site here: http://telegraph.cs.berkeley.edu/ http://telegraph.cs.berkeley.edu/ Direct link to 2.1 last version: http://telegraph.cs.berkeley.edu/telegraphcq/v2.1/ http://telegraph.cs.berkeley.edu/telegraphcq/v2.1/