Need help on cursors

Question

Hi,
I am having issue with my cursor.
My cursor declartion looks like below:
Declare
cursor c1 is
select job_id,delayed_time
from mail_test;
Begin
open c1;
Loop
Fetch c1 into m_job_id, m_delayed_time;
IF c1%FOUND THEN
--Exit when c1%NOTFOUND;
dbms_output.put_line('hai');
dbms_output.put_line(' Job '||m_job_id||' is delayed by '||m_delayed_time||' minutes, ');
EXIT;
END IF;
END LOOP;
close c1;
End;
In mail_test table only one row is there for job 1151, but the above code snippet is displaying 3 rows. Any problem with my looping because I want to display only one row.
O/p
hai
Job 1151 is delayed by 184 minutes,
hai
Job 1151 is delayed by 184 minutes,
hai
Job 1151 is delayed by 184 minutes,
Desired o/p:
hai
Job 1151 is delayed by 184 minutes,
Please help me on this. Thanks

Answer 1

I dont want to use any predicate for job_id bcoz I want to select all the records from that table.Strange, that sounds contradictionary: do you want to select all records or just one?
Anyway:
Your other options are changing the query to either:
select distinct job_id
               ,      delayed_time
               from   mail_testor (dirty one)
select job_id
               ,      delayed_time
               from   mail_test
               where  rownum=1Or, if you just want the output once, but loop through all records, you can do something like:
declare
  prev_id number;
begin
  for rec in ( select job_id
               ,      delayed_time
               from   mail_test
  loop
    if prev_id != rec.job_id
    then
      dbms_output.put_line('hai');
      dbms_output.put_line(' Job '||rec.job_id||' is delayed by '||rec.delayed_time||' minutes ');
    end if;
    prev_id := rec.job_id;
  end loop;
end;