"Sabin Coanda" <sabin.coanda@deuromedia.ro> writes:
> I don't have experience with operators. I built one and when I tried to drop
> it I got th efollowing error: cannot drop operator ... because it is
> required by the database system.
> How do I drop it please ?
Well, you need to drop *your* operator, not the similarly named built-in
one which is evidently what you tried to do. You have to watch out for
search_path gotchas here --- most likely, you need to specify the schema
containing your operator explicitly.
regards, tom lane