Please try this:
SELECT pg_database.datname as Database_Name, pg_authid.rolname as Database_Owner,
pg_authid.rolsuper as IsSuperUser, pg_tablespace.spcname as TableSpaceName,
pg_catalog.pg_tablespace_location(pg_tablespace.oid) as TableSpaceLocation
FROM pg_database
JOIN pg_authid on pg_database.datdba = pg_authid.oid
CROSS JOIN pg_tablespace
WHERE datistemplate = false
AND pg_database.dattablespace = pg_tablespace.oid;