I see many comments about “PostgreSQL compatibility” not being actual compatibility… maybe the PostgreSQL people should compile a list of requirements for a dat

I see many comments about “PostgreSQL compatibility” not being actual compatibility… maybe the PostgreSQL people should compile a list of requirements for a database to call itself “PostgreSQL-compatible”? It feels like the compatibility claim is a bit abused (not only in this case) mostly because there’s no clear and strict reference (maybe with mandatory and optional requirements) for what “compatible” means