Comment by tgeek

Calling Postgres the leading open source DB is probably a bit more than a stretch these days, but yes its quite popular with startups(though one would argue nosql DBs are #1 in the eyes of most startups sadly). Unfortunately one of the places its not popular in, is Amazon and the majority of their business customers. MySQL, Oracle, and SQL Server are all much more popular than Postgres, which is why they have probably focused on it more over the years. That said, the features have seemed to be coming pretty regularly.