Based on the legendary "Don't Do This" PostgreSQL wiki page, this talk will explore some of the common pitfalls and misconceptions that Postgres users can face - and show possible ways to undo them or workarounds. Some of the topics to be covered: - Correct types for data storage - (Sub-)Partitioning -- And how to get it wrong - Bad SQL habits - Table inheritance -- And how to undo it - Security issues -- Unsafe configurations and usage - Connections -- Number of, and properly handling