Neues vom PostgreSQL Planet
David Rowley: Speeding up sort performance in Postgres 15
In recent years, PostgreSQL has seen several improvements which make sorting faster. In the PostgreSQL 15 development cycle—which ended in April 2022—Ronan Dunklau, Thomas Munro, Heikki Linnakangas, and I contributed some changes to PostgreSQL to make sorts go even faster.
Each of the improvements to sort should be available when PostgreSQL 15 is out in late 2022.
Paul Ramsey: Instant Heatmap with pg_featureserv
The pg_featureserv micro-service is a thin middleware that binds tables and functions in a PostgreSQL database to a JSON collections API, accessible over HTTP. Using the Crunchy Bridge container apps, I'm going to give a quick overview of how to set up a web based spatial heatmap from Postgres.
Devrim GÜNDÜZ: How to install PostgreSQL 14, 13, 12, 11 and 10 to Red Hat Enterprise Linux 9
Continue reading "How to install PostgreSQL 14, 13, 12, 11 and 10 to Red Hat Enterprise Linux 9"
Anthony Sotolongo León: Solving PostgreSQL's planner issues due to statistics missing chunks
PostgreSQL stores data on a page that usually has 8KB of size, this means that when there isn’t enough space to store the data (for example, text or varchar data type), PostgreSQL uses the TOAST technique which allows us to store this extra data like chunks using other tables, each chunk is stored as a separate row in the TOAST table belonging to the main table. The users don’t need to know if the information is stored on TOAST.
Craig Kerstiens: Unfinished Business with Postgres
7 years ago I left Heroku. Heroku has had a lot of discussion over the past weeks about its demise, whether it was a success or failure, and the current state. Much of this was prompted by the recent, and on-going security incident, but as others have pointed out the product has been frozen in time for some years now.
Francisco Figueiredo Jr: Happy 20th Anniversary, Npgsql!
Happy 20th Anniversary, Npgsql!
It seems like yesterday when I decided to start Npgsql. And today, Npgsql completes 20 years since the first public beta release!
On May 18th, 2002, this is what was written in the first release notes of Npgsql version 0.1:
Ian Barwick: Fini for _PG_fini(): recent changes in shared library coding
For many years the documentation has contained the following statement :
If the file includes a function named _PG_fini, that function will be called immediately before unloading the file. Likewise, the function receives no parameters and should return void. Note that _PG_fini will only be called during an unload of the file, not during process termination. ( Presently, unloads are disabled and will never occur, but this may change in the future . )
Ian Barwick: Fini for _PG_fini(): recent changes in shared library coding
For many years the documentation has contained the following statement :
If the file includes a function named _PG_fini, that function will be called immediately before unloading the file. Likewise, the function receives no parameters and should return void. Note that _PG_fini will only be called during an unload of the file, not during process termination. ( Presently, unloads are disabled and will never occur, but this may change in the future . )
Bruce Momjian: Postgres 15 Release Notes
I have just completed the first draft of the Postgres 15 release notes. (It still needs more XML markup and links.) The release note feature count is 186, which is similar to recent major releases, excluding Postgres 14's high feature count. Postgr
Andreas 'ads' Scherbaum: Haki Benita
Frits Hoogland: When are you running too much on linux?
In the old days, things were simpler. Computer systems were running in the server room in the office building, hopefully the server was carefully sized, unix operating systems ran processes, and when a server was overloaded, processes waited in the runqueue.
In todays world, this is different. Computer systems are running in the cloud, mostly sizing means you can scale in the cloud, and the linux operating system is running processes and (lots of) threads.
Yugo Nagata: pg_ivm 1.0 released!
pg_ivm v1.0 was officially released!
pg_ivm is an extension module that provides Incremental View Maintenance (IVM) feature, which is a way to make materialized views up-to-date in which only incremental changes are computed and applied on views rather than recomputing.
Egor Rogov: Queries in PostgreSQL: 4. Index scan
Shaun M. Thomas: PG Phriday: What You Should Know About Basic Postgres Authentication
Keith Fiske: The Vectors of Database Encryption
One of the most requested features by Crunchy Data customers using modern enterprise database environments is some form of data encryption. However, nailing down exactly what someone means when they say "We need our data encrypted" is often a challenge due to the actual requirements not being fully clarified or even understood. So, before anyone tries to implement database encryption it is critically important to understand what needs to be encrypted and what benefit is actually gained by the methods that are employed.
Tatsuo Ishii: PostgreSQL supports COPY FREEZE in pgbench but it will not appear in the release note
In my blog post I reported that a patch to allow to use COPY FREEZE in pgbench was accepted for upcoming PostgreSQL 15 (supposed to be released by the end of 2022). It seems the patch has survived without being reverted!
Luca Ferrari: pgenv `switch`
pgenv 1.3.0 adds a new command: switch
pgenv switch`
pgenv, a simple but great shell script that helps managing several PostgreSQL instances on your machine, have been improved in the last days.
Thanks to the contribution of Nils Dijk @thanodnl on GitHub, there is now a new command named switch that allows you to quickly prepare the whole environment for a different PostgreSQL version without having to start it.
Nikhil Mohite: Query Tool vs View/Edit Data
Gabriele Bartolini: Introducing CloudNativePG: A New Open Source Kubernetes Operator for Postgres
Laurenz Albe: Time zone management in PostgreSQL
© Laurenz Albe 2022
Next to character encoding, time zones are among the least-loved topics in computing. In addition, PostgreSQL’s implementation of timestamp with time zone is somewhat surprising. So I thought it might be worth to write up an introduction to time zone management and recommendations for its practical use.
Time zones and the SQL standardThe SQL standard has rather limited provisions for specifying time zones:
::= ::= [ ] ::=It has the following to say about time zones:
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