Posts

PostgreSQL

Nearest Big City

In this article, we want to find the town with the greatest number of inhabitants near a given location. A very localized example We first need to find and import some …

Conferences

Emacs Conference

Yes it did happen, for real, in London: the Emacs Conference. It was easter week-end. Yet the conference managed to have more than 60 people meet together and spend a …

Conferences

The Need For Speed

Hier se tenait la cinquième édition de la conférence organisée par dalibo, où des intervenants extérieurs sont régulièrement invités. Le thème hier était à la fois clair …

PostgreSQL

Bulk Replication

In the previous article here we talked about how to properly update more than one row at a time, under the title Batch Update. We did consider performances, including …

PostgreSQL

Batch Update

Performance consulting involves some tricks that you have to teach over and over again. One of them is that SQL tends to be so much better at dealing with plenty of rows …

PostgreSQL

HyperLogLog Unions

In the article from yesterday we talked about PostgreSQL HyperLogLog with some details. The real magic of that extension has been skimmed over though, and needs another …

PostgreSQL

PostgreSQL HyperLogLog

If you’ve been following along at home the newer statistics developments, you might have heard about this new State of The Art Cardinality Estimation Algorithm …

Emacs

Marking whole word

I’ve discovered recently another Emacs facility that I since then use several times a day, and I wonder how I did without it before: C-M-SPC runs the command …

debian

Live Upgrading PGQ

Some skytools related new today, it’s been a while. For those who where at my FOSDEM’s talk about Implementing High Availability you might have heard that I …