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 …
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
What's in a name: “Mastering”
Now that my book Mastering PostgreSQL in Application Development is released (and selling well, thanks guys!), I’ve had some questions about the title. The idea is …
PostgreSQL
Mastering PostgreSQL in Application Development launches!
Today is the day my book Mastering PostgreSQL in Application Development launches! I’m all excited that everybody interested is now able to actually read my book! …
PostgreSQL
Set Returning Functions and PostgreSQL 10
PostgreSQL 10 is now available for everyone to use, and hinted by David Fetter I had to review my previous article on Json and SQL to adapt to Set Returning Functions …
PostgreSQL
on Json and SQL
PostgreSQL has had proper json support for a while now. The unique extensibility approach of the PostgreSQL system allows it to enable native SQL friendly JSON …
PostgreSQL
Mastering PostgreSQL in Application Development
Mastering PostgreSQL in Application Development is the full title of the book I am currently writing. Running the PostgreSQL is YeSQL series of blog posts has shown me …
PostgreSQL
Regular Expressions and Grouping Sets
There’s a very rich set of PostgreSQL functions to process text, you can find them all at the String Functions and Operators documentation chapter, with functions …
PostgreSQL
SQL Regression Tests
In a previous article here we saw How to Write SQL in your application code. The main idea in that article is to maintain your queries in separate SQL files, where …
PostgreSQL
from MySQL to PostgreSQL
Today pgloader v3.4.1 is released and available! This new release comes with 110 commits as show in github compare view. This release of pgloader is following the …
PostgreSQL
Playing with Unicode
The reason why I like Unicode a lot is because it allows me to code in text based environments and still have nice output. Today, we’re going to play with Regional …
PostgreSQL
PostgreSQL and the calendar
The modern calendar is a trap for the young engineer’s mind. We deal with the calendar on a daily basis and until exposed to its insanity it’s rather common …
PostgreSQL
SQL and Business Logic
Business logic is supposed to be the part of the application where you deal with customer or user facing decisions and computations. It is often argued that this part …