PostgreSQL
PostgreSQL, Aggregates and Histograms
In our previous article Aggregating NBA data, PostgreSQL vs MongoDB we spent time comparing the pretty new MongoDB Aggregation Framework with the decades old SQL …
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PostgreSQL
141 posts
PostgreSQL
Aggregating NBA data, PostgreSQL vs MongoDB
When reading the article Crunching 30 Years of NBA Data with MongoDB Aggregation I coulnd’t help but think that we’ve been enjoying aggregates in SQL for 3 or …
PostgreSQL
Denormalizing Tags
In our Tour of Extensions today’s article is about advanced tag indexing. We have a great data collection to play with and our goal today is to be able to quickly …
Conferences
An Interview about MariaDB and PostgreSQL
At the Open World Forum two weeks ago I had the pleasure to meet with Colin Charles. We had a nice talk about the current state of both MariaDB and PostgreSQL, and even …
PostgreSQL
PostgreSQL Autonomous Transaction
PostgreSQL is an all round impressive Relational DataBase Management System which implements the SQL standard (see the very useful reference page Comparison of different …
PostgreSQL
PostgreSQL data recovery
The following story is only interesting to read if you like it when bad things happen, or if you don’t have a trustworthy backup policy in place. By trustworthy I …
PostgreSQL
Using trigrams against typos
In our ongoing Tour of Extensions we played with earth distance in How far is the nearest pub? then with hstore in a series about trigger, first to generalize Trigger …
PostgreSQL
Auditing Changes with Hstore
In a previous article about Trigger Parameters we have been using the extension hstore in order to compute some extra field in our records, where the fields used both for …
PostgreSQL
Trigger Parameters
Sometimes you want to compute values automatically at INSERT time, like for example a duration column out of a start and an end column, both timestamptz. It’s easy …
PostgreSQL
Understanding Window Functions
There was SQL before window functions and SQL after window functions: that’s how powerful this tool is. Being that of a deal breaker unfortunately means that it can …
PostgreSQL
How far is the nearest pub?
In our recent article about The Most Popular Pub Names we did have a look at how to find the pubs nearby, but didn’t compute the distance in between that pub and …
PostgreSQL
The Most Popular Pub Names
In his article titled The Most Popular Pub Names Ross Lawley did show us how to perform some quite interesting geographic queries against MongoDB, using some nice Open …