속도
-- SQL 문
select employee_id, first_name || ' ' || last_name,
case when substr(jubun, 7, 1) in('1','3') then '남' else '여' end,
to_char( nvl(salary + (salary * commission_pct), salary)
, '9,999,999')
from employees
where employee_id = 101;
-- PL/SQL (프로시저) 사용한 경우
select *
from user_source
where type = 'PROCEDURE' and name = 'PCD_EMPINFO';