SELECT db.oid, 
       db.datname,
       au.rolname as datdba,
       pg_encoding_to_char(db.encoding) as encoding,
       db.datallowconn,
       db.datconnlimit,
       db.datfrozenxid,
       tb.spcname as tblspc,
--       db.datconfig,
       db.datacl
  FROM pg_database db
  JOIN pg_authid au ON au.oid = db.datdba
  JOIN pg_tablespace tb ON tb.oid = db.dattablespace
 ORDER BY 2;