While creating integration tests on an adonisJS server connected to a Postgres database. I’ve faced an issue where javascript sort by string weight wasn’t matching to Postgres order_by results. It turns out that Postgres uses the collation implementation from the OS he hosted on. source
On a linux OS it’s then not case sensitive at all. Hopefully using docker will easily avoid any further issue in the team you’re working with as everyone will be hosting the Postgres inside identical docker containers.