How to declare cursors dynamically

Question

I am writing a trigger.
in the body of the trigger, I need to make a select query on a table like
select column1 from tablename where order_id = some_variable_name...
for each of the column1, I need to do some operation. Problem is I get the value of some_variable_name only in the body of the trigger, so I cant declare a cusor for this select in the declare section.
Is there any way to declare this cursor in the body block of the trigger, or is there some other way to make a select query and store the results in some data structure?

Answer 1

One can still declare the cursor in the declare section of the trigger ... just need to parameterize the cursor definition:
create or replace trigger bit
before insert on t
for each row
declare
  cursor crsdef(av_nm usr.nm%type) is
  select count(0) cnt
  from   usr
  where  nm = initcap(av_nm);
begin
  for crs in crsdef(:new.nm)
  loop
    dbms_output.put_line('cnt for '||:new.nm||' is: '||crs.cnt);
  end loop;
end;
/Better yet, put the whole thing (cursor and all) in a stored procedure/function and call that from the trigger.