Vincenzo Romano <vincenzo(dot)romano(at)gmail(dot)com> writes:
> <quote>
>> STABLE indicates that the function cannot modify the database,
> They talk about table scans which should not involce the information schema
> tables, the only tables that get modified by a fubction whose sole effect it
> to create other functions.creatorfunc
Modifying the system catalogs counts as modifying the database.
regards, tom lane