Обсуждение: [BUGS] information_schema.columns.character_octet_length unavailable if noaccess to pg_database
[BUGS] information_schema.columns.character_octet_length unavailable if noaccess to pg_database
От
Fabien Meghazi
Дата:
Tested against PostgreSQL version 9.6 and 9.5
On any database, when the pg_database access is restraint for standard users:
psql> REVOKE ALL ON pg_database FROM public;
it not possible anymore to query the field character_octet_length from the view information_schema.columns:
psql> SELECT character_octet_length FROM information_schema.columns;
ERROR: permission denied for relation pg_database
CONTEXT: SQL function "_pg_char_octet_length" statement 1
The same problem can be found in information_schema.domains.
Fabien Meghazi <amigrave@gmail.com> writes:
> On any database, when the pg_database access is restraint for standard
> users:
> psql> REVOKE ALL ON pg_database FROM public;
> it not possible anymore to query the field character_octet_length from the
> view information_schema.columns:
It's pretty hard to get excited about that --- it seems like it's going
to be about the least of your problems, if you start revoking public read
permissions on random system catalogs. Postgres isn't really designed
with that sort of change in mind.
regards, tom lane
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