Re:PostgreSQL Scalability: Towards Millions TPS
by Jweb_Guru on Tuesday May 10, 2016 @01:08PM
(#11668746)
Neither HAVING nor GROUP BY are part of the relational model, though. Really, aggregation isn't part of the traditional relational model. People just tend to associate it with RDBMSes.
my favorite quote: "the relational model is rooted depth in the set theory and math is hard to fool"
it was on a post on how all NoSQL are ending up having to reinvent having, group and join clauses on their API because that's what apps do with data