Oracle SQL Plan operation COUNT

create table tq84_tab (
   val  number,
   flg  varchar2(1)
);

explain plan for
select
   rownum r,
   val
from
   tq84_tab
where
   flg = 'y';

select * from table(dbms_xplan.display(format=>'basic'));
--
-- ---------------------------------------
-- | Id  | Operation          | Name     |
-- ---------------------------------------
-- |   0 | SELECT STATEMENT   |          |
-- |   1 |  COUNT             |          |
-- |   2 |   TABLE ACCESS FULL| TQ84_TAB |
-- ---------------------------------------

drop  table tq84_tab;