---

select
    pg_get_function_identity_arguments(p.oid) as arguments,
    pg_get_function_result(p.oid) as result_columns
from pg_proc p
join pg_namespace n
    on n.oid = p.pronamespace
where n.nspname = 'mtrustgate'
  and p.proname = 'get_list_account_balances_bu';