create or replace function look
  (que_desc user_security_question.question_desc%type)
  return varchar2
as
  que_id user_security_question.question_id%type;
begin
  select question_id 
  into   que_id 
  from   user_security_question
  where  question_desc = que_desc;
  --
  return que_id;
exception
  when no_data_found then
    raise_application_error
      (-20001, 'question not found');
  when too_many_rows then
    /* this would not happen generally */
    raise_application_error
      (-20002, 'More questions exist with the same number');
  when others then
    raise_application_error
      (-20003, SQLERRM);
end look;
/

load data
INFILE 'c:\oracle\ora92\bin\LOGIN.CSV'
REPLACE
INTO table USER_SECURITY_ANS
fields terminated by "," optionally enclosed by '"' 
TRAILING NULLCOLS
(ID,
SECURITYQUESTION BOUNDFILLER,
SECRET_ANSWER,
Question_Id "look(:SECURITYQUESTION)"
)