Partitions in Postgres are a recent concept, being introduced as of version 10 and improved a lot over the last years. It is complicated, and doable, to gather information about them with specific queries working on the system catalogs, still these may not be straight-forward. For example, getting a full partition tree leads to the use of WITH RECURSIVE when working on partitions with multiple layers.

A couple of weeks ago a bug has popped up on the community mailing lists about the use of temporary objects in two-phase commit. After discussions, the result is the following commit:

The following commit has been merged into Postgres 12, adding a new option for VACUUM and ANALYZE:

The following commit has been merged into Postgres 12 a couple of months ago, easing failover control flow:

The following bug fix has been committed to the PostgreSQL code tree, addressing an issue visibly since ON COMMIT support for CREATE TABLE has been added back in commit ebb5318 from 2002:

The following commit has reached PostgreSQL 12, which brings more flexibility in managing replication with standbys distributed geographically:

The following commit has happened in Postgres 12, adding a feature which allows to control and potentially enforce the protocol SSL connections can use when connecting to the server:

If you maintain some PostgreSQL extensions which rely on PGXS, a build infrastructure for PostgreSQL, the following commit added to Postgres 12 will be likely something interesting, because it adds new options to control more types of regression tests:

A couple of months ago a thread has begun on the PostgreSQL community mailing lists about a set of problems where it is possible to lock down PostgreSQL from connections just by running a set of queries with any user, having an open connection to the cluster being enough to do a denial of service.

A new set of system roles leveraging the past existence of superuser-only access for some features has been added to leverage security on an instance of PostgreSQL. The following commit has added them, and is part of 11: