PostgreSQL
Exporting a Hierarchy in JSON: with recursive queries
In another article here, entitled on JSON and SQL, we saw in great details how to import a data set only available as a giant JSON file. Then we normalized the data set, …
Getting more out of PostgreSQL
Notes on SQL technique, data modeling, and PostgreSQL internals — from the author of The Art of PostgreSQL. New articles are built on the free Lab so you can run every query yourself.
PostgreSQL
A Year in Review: Most Read Articles in 2017
It seems to be usual nowadays to review the previous year, and readers apparently like Top-N Lists — that’s you now, so let’s hope that my understanding works …
PostgreSQL
Working at Citus Data
You might have read it in the news already in Citus’ blog post by Sumedh Pathak: PostgreSQL Expert Dimitri Fontaine joins Citus Data. I am very happy to join a …
PostgreSQL
Migrating to PostgreSQL, the White Paper
After having been involved in many migration projects over the last 10 years, I decided to publish the following White Paper in order to share my learnings. The paper is …
PostgreSQL
Submit a Talk to pgDay Paris Today!
pgDay Paris 4th edition happens March 15, 2018! And the Call for Papers is still open, as it closes with the year: the submission deadline is December 31st, 2017. As …
PostgreSQL
Setting up psql, the PostgreSQL CLI
PostgreSQL ships with an interactive console with the command line tool named psql. It can be used both for scripting and interactive usage and is moreover quite a …
PostgreSQL
Mastering PostgreSQL: a reader's interview
Florent Fourcot has read Mastering PostgreSQL in Application Development and has seen tremendous inprovements in his production setup from reading the first chapters and …
PostgreSQL
Mastering PostgreSQL: more about the docker image
The Enterprise Edition of Mastering PostgreSQL in Application Development ships with a docker image that hosts both a PostgreSQL server instance with a pre-loaded …
PostgreSQL
Queen, Princesses, and Workers
The PostgreSQL community made the explicit choice some times ago that they would not use the infamous master and slave terminology. Instead, the documentation introduces …
PostgreSQL
Scaling Python released
Today I am very pleased to announce the release of the book Scaling Python from my good friend Julien Danjou! As Julien says, Python applications can handle millions of …
PostgreSQL
Simple Data Modeling with a Test Data Set
In How to Write SQL we saw how to write SQL queries as separate .sql files, and we learnt about using query parameters with the psql syntax for that (:variable, …
PostgreSQL
The Mode Ordered-Set Aggregate Function
In our article Exploring a Data Set in SQL we discovered a data set related to music: the Chinook sample database. Our discovery led us to find albums containing tracks …