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Christoph Berg

PostgreSQL Developer & Consultant
Christoph is a Senior PostgreSQL Engineer at CYBERTEC. He's also a PostgreSQL Major Contributor and Debian developer. In his free time, he's a ham radio operator. He enjoys Morse telegraphy contests and DXing to remote countries, is a modestly successful bridge player and an occasional geocacher.
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Articles by Christoph Berg

The Debian Conference 2025 in Brest

by Christoph Berg | 07.2025
This blogpost gives an insight into the Debian Conference 2025. Please read ahead to understand how the Debian conference was and what are the takeaways.

From VACUUM to Deutsche Bahn: The Most Unexpected Moments at PGConf.DE 2025

by Christoph Berg | 05.2025
Pre-Conference Travels: Debian & Berlin The week before this year's PGConf.DE, I attended the Debian MiniDebConf in Hamburg. Adding Berlin […]

Git Filters

by Christoph Berg | 05.2024
Is it possible that the git filter clones reduce the overall disk consumption and which other options are possible?

PGconf.de 2024 in Munich

by Christoph Berg | 04.2024
I had the pleasure of attending PGConf.de in Munich on April 12, 2024. Here I report on my experiences and insights.

Recovering Deleted Data From PostgreSQL Tables

by Christoph Berg | 03.2024
Four options in recovering deleted data. In this article we will show you four options how to restore your data.

FOSDEM 2024 in Brussels

by Christoph Berg | 02.2024
I went to FOSDEM 2024 in Brussels. In this post I would like to tell you about my personal impressions concerning this event.

The 2023 PGconf.EU in Prague

by Christoph Berg | 12.2023
The PGConf.eu took place 2023 in Prague. It was a great time with other CYBERTEC members and of course interesting topics.

PostgreSQL on s390x

by Christoph Berg | 11.2023
I am happy to announce PostgreSQL family is growing again, with the addition of IBM’s z-series architecture, called “s390x” in Debian terms.

Exclusion constraints in PostgreSQL and a tricky problem

by Christoph Berg | 09.2023
Exclusion constraints in PostgreSQL are complex, see this use case using WHERE STATUS. There are limits to what exclusion constraints can do.

Reproducible builds: a PostgreSQL query optimization example

by Christoph Berg | 07.2023
This post shows how to optimize a slow query that came out of the Reproducible Builds project. The Reproducible Builds […]
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