Complicated PL/SQL questions that involves function with in type parameter

Question

Hello,
I have a question about functions with in-parameters. In the HR schema, I need to get the minimum salary of the job_id that is mentioned as an in-parameter.
this is what I am thinking but I dont know if it's correct or not or what should I do next!
create or replace function get_min_salary (i_job_id in varchar2)
return number
as
min_sal jobs.min_salary%type;
begin
SELECT min_salary INTO min_sal
FROM jobs
where job_id = i_job_id;
RETURN min_sal;
end get_min_salary;if the i_job_id which is the in type parameter does not have a minimum salary then use the following function to register an error:
create or replace procedure insert_error (i_error_code in number,
i_error_message in varchar2)
as
begin
insert into error_table (error_user, error_date, error_code, error_message)
values (user,sysdate,i_error_code,i_error_message);
end insert_error;This function is basically to say that an error has occured and to register that error, at the same time I need to print out the error using the dbms_out.put_line.
Any ideas of how to do that?
Thanks in advance

Answer 1

>
minimum salary of the job_id
>
may be
SELECT min(min_salary) INTO min_sal
FROM jobs
where job_id = i_job_id;
if the i_job_id which is the in type parameter does not have a minimum salary then use the following function to register an error:why error?
This function is basically to say that an error has occured and to register that error, at the same time I need to print out the error using the dbms_out.put_line.
create or replace procedure insert_error (i_error_code in number,
i_error_message in varchar2)
as
begin
insert into error_table (error_user, error_date, error_code, error_message)
values (user,sysdate,i_error_code,i_error_message);
-- this
dbms_out.put_line('this');
end insert_error;