Bringing together some of the world's top PostgreSQL experts.
In PostgreSQL version 10 or less, if you add a new column to a table without specifying a default value then no change is made to the actual values stored. Any existing row will just fill in a NULL for that column. But if you specify a default value, the entire table gets rewritten with […]
Postgres contains a moving event horizon, which is in effect about 2 billion transactions ahead of or behind the current transaction id. Transactions up to 2 billion ahead of or more than 2 billion behind the current transaction id are considered to be in the future, and will thus be invisible to current transactions. Postgres […]
The video of my presentation below walks you through the major features of the native JSON data type in PostgreSQL 9.3 and beyond. This presentation covers the following topics: What is JSON? How is it available in PostgreSQL? What’s the difference between JSON and JSONB? Accessing JSON values Creating JSON from table data Creating table […]
Recently I have been refining and adding utilities to look after our Perl code. You might be surprised to learn that as well as 1.3 million or so lines of C code, there are about 30,000 lines of Perl code in our sources. This a sizeable body of code, even if it’s dwarfed by our […]
If you have Docker installed on your development machine, there is a simple way to road test your code using the buildfarm client, in a nicely contained environment. These preparatory steps only need to be done once. First clone the repository that has the required container definitions: git clone http://github.com/PGBuildFarm/Dockerfiles.git bf-docker Then build a container […]
I have just release version 8 of the PostgreSQL Buildfarm client It can be downloaded from http://buildfarm.postgresql.org/downloads/releases/build-farm-8.tgz or http://github.com/PGBuildFarm/client-code/archive/REL_8.tar.gz This release contains a number of small changes to make using the –from-source feature a bit nicer. It also contains a good deal of code cleanup to be perlcritic clean, with some exceptions, down to severity […]
I have released version 6.1 of the PostgreSQL Buildfarm client. It is available at http://buildfarm.postgresql.org/downloads/releases/build-farm-6_1.tgz This release fixes a couple of bugs that became apparent in yesterday’s release. The first was a relatively minor one where the verbosity was always set if using the run_branches.pl script. The second was a portability issue where some versions […]
PostgreSQL Buildfarm client Release 6 is now available and can be downloaded from http://buildfarm.postgresql.org/downloads/releases/build-farm-6.tgz Features use a persistent cache for configure, leading to a substantial performance improvement for that step, based on an idea from Tom Lane improve installcheck security, mirroring earlier changes on this in Postgres itself allow skipping individual TAP tests, e,g, “–skip_steps=pg_dump-check” a […]
Recently we’ve had a patch submitted to support the latest incarnation of the Microsoft build tools, Visual Studio 2017. I didn’t have a spare Windows machine available to test with, so I set up Windows machine on Amazon AWS to test with. I chose Windows Server 2016, a t2.medium instance with a 50 GB root […]
Release 5 of the PostgreSQL Buildfarm Client has been released and can be downloaded from http://buildfarm.postgresql.org/downloads/releases/build-farm-5.tgz In a similar move to PostgreSQL version numbering, with this release we move to a one part numbering system. In addition to a number of bug fixes and very minor changes, this release has the following features / changes: […]
