Especifique a lista de definição de coluna dblink de um tipo existente local

select (rec).* from dblink('dbname=...','select myalias from foreign_table
  myalias') t1 (rec local_type)

select (rec).* from dblink('dbname=foreignDb','select t1 from
  pg_stat_all_tables t1') t2 (rec pg_stat_all_tables)