Thanks for answering! Currently I do use views but it's just something I had wondered about. I mean, the information from the information_schema must be update

Thanks for answering! Currently I do use views but it's just something I had wondered about. I mean, the information from the information_schema must be updated anyway when one deletes a column or table, so I thought maybe a function like that which looks it up could exist. I will try with PL/pgSQL, have long wanted to familiarise myself with it anyway.