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.klaver@aklaver.com
