Daniel Westermann

Creating a customized PostgreSQL container using buildah

Quite some time ago I blogged about how you could build your customzized PostgreSQL container by using a Dockerfile and Docker build. In the meantime Red Hat replaced Docker in(…)

Red Hat Forum Zürich, 2019, some impressions

Currently the Red Hat Forum 2019 in Zürich is ongoing and people just finished lunch before the more technical sessions are starting.

EDB EPAS 12 comes with interval partitioning

While community PostgreSQL 12 is in beta quite some time now (currently in beta 3) it usually takes some time until EDB EPAS will be available on top of the next major(…)

Schedule reboots of your AWS instances and how that can result in a hard reboot and corruption

From time to time you might require to reboot your AWS instances. Maye you applied some patches or for whatever reason. Rebooting an AWS instance can be done in several ways: You can of course do that directly from the(…)

Migrating your users from md5 to scram authentication in PostgreSQL

One of the new features in PostgreSQL 10 was the introduction of stronger password authentication based on SCRAM-SHA-256. How can you migrate your existing users that currently use md5 authentication to the new method without any(…)

Converting columns from one data type to another in PostgreSQL

Usually you should use the data type that best fits the representation of your data in a relational database. But how many times did you see applications that store dates or numbers as text or dates as integers? This is(…)

Telling the PostgreSQL optimizer more about your functions

When you reference/call functions in PostgreSQL the optimizer does not really know much about the cost nor the amount of rows that a function returns. This is not really surprising as it is hard to predict what the functions is(…)

Modifying pg_hba.conf from inside PostgreSQL

During one of the sessions from the last Swiss PGDay there was a question which could not be answered during the talk: Is it possible to modify pg_hba.conf from inside PostgreSQL without(…)

PostgreSQL on the beach, PGIBZ, recap

So, finally, PostgreSQL on the beach is over. During discussions it was mentioned that some companies had issues to justify sending people to a conference to Ibiza. It was not really clear if they wanted to avoid the impression of(…)

PostgreSQL partitioning (8): Sub-partitioning

We are slowly coming to the end of this little series about partitioning in PostgreSQL. In the last post we had a look at indexing and constraints and today we will have a look at sub partitioning. Sub partitioning means(…)