Re: [Code: 0, SQL State: 0A000] when "typing" from pg_catalog

On 4/9/24 07:59, Thiemo Kellner wrote:
> Hi
>
> I have the following function code. When trying to install, it gives me
>
> [Code: 0, SQL State: 0A000]  FEHLER: Verweise auf andere Datenbanken
> sind nicht implementiert: pg_catalog.pg_roles.rolname
>   Position: 298  [Script position: 334 - 361]

[Code: 0, SQL State: 0A000] ERROR: References to other databases are not
implemented: pg_catalog.pg_roles.rolname
Position: 298 [Script position: 334 - 361]
>
> To the best of my knowledge, pg_catalog is a schema not a database, like
> information_schema. Am I missing something? And why is it not allowed to
> type from the catalogue?
>
> I presume, this example is rather academic due to the name type.

PG_CATALOG.PG_ROLES.ROLNAME := 'snowrunner_reader';

Is being seen as DB_NAME.TABLE_NAME.COLUMN_NAME.
>

> Kind regards
>
> Thiemo
>
>
> create or replace function GRANT_SELECTS()
> returns void
> language plpgsql
> as
> $body$
>     declare
>         C_SCHEMA_NAME       constant
> INFORMATION_SCHEMA.SCHEMATA.SCHEMA_NAME%type :=
>           'snowrunner';
> --        C_ROLE_NAME         constant    name :=
>         C_ROLE_NAME         constant    PG_CATALOG.PG_ROLES.ROLNAME :=
>           'snowrunner_reader';
>         V_SQL_STATEMENT                 text;
>     begin
>         -- Check the existance of the schema
>         perform 1
>             from INFORMATION_SCHEMA.SCHEMATA
>             where SCHEMA_NAME = C_SCHEMA_NAME;
>         if not found then
>             raise exception 'Schema "%s" does not exist!', C_SCHEMA_NAME;
>         end if;
>
>         -- Check the existance of the role
>         perform 1
>             from PG_CATALOG.PG_ROLES
>             where ROLNAME = C_ROLE_NAME;
>         if not found then
>             raise exception 'Role "%s" does not exist!', C_ROLE_NAME;
>         end if;
>
>         -- Issue grants
>         V_SQL_STATEMENT := format('grant select on all tables in schema
> %i to %i', C_SCHEMA_NAME, C_ROLE_NAME);
>         raise info '%', V_SQL_STATEMENT;
>         execute V_SQL_STATEMENT;
>         V_SQL_STATEMENT := format('grant select on all views in schema
> %i to %i', C_SCHEMA_NAME, C_ROLE_NAME);
>         raise info '%', V_SQL_STATEMENT;
>         execute V_SQL_STATEMENT;
>         V_SQL_STATEMENT := format('grant select on all materialized
> views in schema %i to %i', C_SCHEMA_NAME, C_ROLE_NAME);
>         raise info '%', V_SQL_STATEMENT;
>         execute V_SQL_STATEMENT;
>         commit;
>
>         return;
>     end;
> $body$;
>
>

--
Adrian Klaver
adrian(dot)klaver(at)aklaver(dot)com