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Generate valid SQL that looks real, nourishes nothing, and never spoils.

Introduction

I recently had the privilege of speaking at POSETTE 2026 about pg_stats and how Postgres internal statistics work. This post is a written companion to that talk – aimed at giving you a working understanding of what pg_stats is, how it’s populated, and how it shapes the decisions the query planner makes on your behalf.

Imagine a customers table that looks roughly like this:

On June 5 2026, the PostgreSQL User Group Greece met, organized by Eftychia Kitsou and Charis Charalampidi.

Speaker:

• George Capnias
• Kostas Maistrelis

PGDay Boston happened on June 9 2026 Organized by:

`effective_io_concurrency` has changed what it means twice—from a harmonic-series spindle count to a direct request depth to a real async I/O control.

The PostGIS development team is pleased to provide postgis_tiger_geocoder extension. This is the very first release since the break from the PostGIS core. This version requires PostgreSQL 16 and above and should work with any supported PostGIS version.

PostGIS 3.6 series is the last series to include postgis_tiger_geocoder. PostGIS 3.7 will be shipped without postgis_tiger_geocoder.

On 7th of May, 2026, we had the PostgreSQL May Meetup in Berlin. AWS hosted it again, this time we had two speakers from UK and US. The Meetup took place in the Amazontower (EDGE East Side Tower Berlin) in Berlin, across the Uber Arena and with a view at the railway station Warschauer Straße. Celeste Horgan: pg_lake: Unifying transactional and analytical data with Postgres Celeste is Sr.

pgAgent has been my go to scheduling solution for quite some time. Sadly in 6 months it will be completely retired and the pgAgent UI in pgAdmin will be gone. The main reasons I liked pgAgent were:

effective_cache_size doesn't allocate memory, reserve RAM, or control runtime behavior—it merely whispers a number to the query planner to make it smarter…

Recently, I looked into how common polymorphic associations actually are in relational databases — a performance-hostile pattern built around a discriminated foreign key that ORMs (Rails, Django, Hibernate), CRM platforms (Salesforce), and 1C generate automatically.

Parallel queries in PostgreSQL need shared memory sized at runtime, not startup.

Logical replication has been an integral part of Postgres since version 10 released in 2017. It's a very convenient system for synchronizing one or more tables from one running Postgres cluster to another, and the community has embraced it almost without reservation. It's a great feature we've all come to rely on.For all that, it has never been a flawless panacea. Perhaps the most glaring and conspicuous omission in Postgres logical replication is that of sequences.

PostgreSQL 18 finally made extensions truly relocatable by adding `extension_control_path` to match the long-existing `dynamic_library_path`.

At PGDay France (2018 or 2019, I honestly can’t remember which one), I shared my method for evaluating a Postgres extension: read the source code, and ask yourself whether you understand it well enough to fix a small bug. Someone in the audience replied: “That’s only valid for Lætitia Avrot.” I’ve been thinking about that comment ever since. It’s not magic. It’s not some rare gift. It’s a method. Read. Understand.

1. pgsql_tweaks is a bundle of functions and views for PostgreSQL

2. Antony Pegg: Introducing ColdFront: Seamlessly Uniting OLTP, Analytics and AI Workloads on PostgreSQL

   Neues vom PostgreSQL Planet - 18. Juni 2026 - 12:40

   Our team is excited to announce pgEdge ColdFront v1.0.0-beta1: open-source, transparent data tiering for PostgreSQL that unites OLTP, analytics and AI workloads, with no application code changes required. The headline feature: a fully writable cold tier. Jimmy Angelakos is the lead engineer, and it’s available on GitHub and pgEdge Enterprise Postgres.Moving aging data off primary PostgreSQL storage is economically obvious.