Partitioning Archives - 2ndQuadrant

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Which partition contains a specific row in my PostgreSQL database?

September 9, 2020/0 Comments/in Gabriele's PlanetPostgreSQL /by Gabriele Bartolini

If you are enjoying working with PostgreSQL declarative partitioning, you might be wondering how to check which partition contains a specific record. While it is quite obvious in the cases of list or range partitioning, it is a bit trickier with hash partitioning. Don’t worry. Here you can find a quick way to determine which […]

Partitioning a large table without a long-running lock

July 21, 2020/8 Comments/in Andrew's PlanetPostgreSQL /by Andrew Dunstan

Let’s say you have an application that has a huge table and that needs to be available all the time. It’s got so big that managing it without partitioning it is getting increasingly difficult. But you can’t take the table offline to create a new partitioned version of the table, which would take a great […]

How to migrate from inheritance-based partitioning to declarative partitioning in PostgreSQL

April 30, 2020/1 Comment/in Caterina's PlanetPostgreSQL /by Caterina Magini

Partitioning is one of the coolest features in the latest PostgreSQL versions. PostgreSQL 10 introduced native partitioning and more recent versions have continued to improve upon this feature. This article provides a guide to move from inheritance based partitioning to declarative partitioning, using the native features found in PostgreSQL 11+.

PostgreSQL 12: Partitioning is now faster

September 17, 2019/5 Comments/in 2ndQuadrant, David's PlanetPostgreSQL /by David Rowley

Table partitioning has been evolving since the feature was added to PostgreSQL in version 10. Version 11 saw some vast improvements, as I mentioned in a previous blog post. During the PostgreSQL 12 development cycle, there was a big focus on scaling partitioning to make it not only perform better, but perform better with a […]

Partitioning enhancements in PostgreSQL 12

July 15, 2019/3 Comments/in 2ndQuadrant, Kirk’s PlanetPostgreSQL /by Kirk Roybal

Declarative partitioning got some attention in the PostgreSQL 12 release, with some very handy features. There has been some pretty dramatic improvement in partition selection (especially when selecting from a few partitions out of a large set), referential integrity improvements, and introspection. In this article, we’re going to tackle the referential integrity improvement first. This […]

PostgreSQL 11: Patch Reviewers for Partitioning Patches

September 28, 2018/0 Comments/in Alvaro's PlanetPostgreSQL, PostgreSQL /by Álvaro Herrera

We seldom credit patch reviewers. I decided to pay a little homage to those silent heroes for a few of them: here’s the list of people who were credited as having reviewed the patches mentioned in my previous article for PostgreSQL 11. The number in front is the number of times they were credited as reviewers. […]

Partitioning Improvements in PostgreSQL 11

September 19, 2018/6 Comments/in Alvaro's PlanetPostgreSQL, PostgreSQL /by Álvaro Herrera

A partitioning system in PostgreSQL was first added in PostgreSQL 8.1 by 2ndQuadrant founder Simon Riggs. It was based on relation inheritance and used a novel technique to exclude tables from being scanned by a query, called “constraint exclusion”. While it was a huge step forward at the time, it is nowadays seen as cumbersome […]

PG Phriday: pglogical and Postgres 10 Partitions

September 22, 2017/6 Comments/in pglogical, Shaun's PlanetPostgreSQL /by Shaun Thomas

During the Postgres Open 2017 conference in San Francisco, someone came to the 2ndQuadrant booth and struck up a conversation with me. During our shameless geeking out over database mechanics, he asked me if pglogical supported the new Postgres 10 partitions. Given my noted expertise in all things Postgres, I answered in the appropriate manner: […]

PG Phriday: Dearly De-parted

June 9, 2017/0 Comments/in Shaun's PlanetPostgreSQL /by Shaun Thomas

With the christening of PG Phriday at its new location, it’s only fitting that we revisit a frequent boon and bane of organized storage: partitioning. When volume and scale reach a certain point that the very laws of physics become a barrier to efficiency, partitions are a crucial tool to escape the otherwise inevitable pile […]

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