Based on a true story. This article was originally published in 2018. This is a reviewed and extended version of it. The discussed findings can be applied to any actual major version of PostgreSQL. Primum non nocere "Primum non nocere" – this is a fundamental principle that is well-known to anyone working in healthcare: "first, do no harm". It is a reminder: when considering any action that is supposed to improve something, we always need to look at the global picture to see if there might ...