Nightmare on Collation Street - April 7, 2026

Tue, 07 Apr 2026 00:00:00 +0000

Character collations - the rules for comparing and sorting character strings - are not universal, even languages which use the same characters may sort them differently. These rules may also not be stable, and the libraries implementing them may have errors, requiring fixes and updates. When character string data is indexed or partitioned under one set of rules, then queried under another, it may create some problems.

Join Jan and Alastair for a discussion about how this becomes your Postgres database’s problem, when it may come for you, and how to avoid trouble. We’ll give you one spoiler, running upstairs is no more useful here than in any slasher movie.

Postgres on Percona Community

Nightmare on Collation Street - April 7, 2026