create directory ext_data_files as 'C:\';
create table teachers_ext (
first_name varchar2(15),
last_name varchar2(15),
phone_number varchar2(12)
)
organization external (
type oracle_loader
default directory ext_data_files
access parameters (fields terminated by ',' )
location ('teacher.csv')
)
reject limit unlimited
/
select first_name ||' '|| last_name "Name", phone_number "Phone"
from teachers_ext
order by last_name
/