Use of IN clause with cursor

Question

I am trying to append an IN clause to a cursor variable.
The code is as follows:
     declare
     v_due_date varchar2(10) := '01-01-2006';
     v_site_list varchar2(1000) := ' (''' || 'NYC''' || ', ''' || 'PHILA' || ''')';
     TYPE list_rec IS RECORD(
     t_list_id number(4,0),
     t_site_name varchar2(25));
     list_row list_rec;
     cursor list_data_cur(v_duedate VARCHAR2, v_sites VARCHAR2) is
     SELECT list_id, site_name
     FROM t_records
     WHERE
     AND due_date <= to_date(v_duedate, 'mm-dd-yyyy')
     AND due_date > to_date(v_duedate, 'mm-dd-yyyy') - 30 and
     site_name IN v_sites;
     begin
     dbms_output.put_line(v_site_list);
     OPEN list_data_cur(v_due_date, v_site_list);
     LOOP
     fetch list_data_cur into list_row;
     dbms_output.put_line(list_row.t_list_id || ' ' ||
     list_row.t_site_name);
     end loop;
     end;
I need to know why the cursor does not return any data.
It will work if I take out the IN clause, but not with it.
Thanks

Answer 1

Todd,
Here's a p_inlist that doesn't need a type and a function to support it, and it's also quicker with larger result sets. But it probably isn't as impressive to your boss and coworkers ;)...
create or replace procedure p_inlist2
  (p_list in  varchar2 default 'ALL',
   p_rc   out sys_refcursor)
is
  in_clause varchar2(1000);
begin
  if p_list != 'ALL' then
    in_clause := 'and object_id in ('||p_list||')';
  end if;
  open p_rc for
    'select object_id, object_name
       from all_objects
      where rownum <=20 '||in_clause;
end;
/Here's some example runs on my Linux box, with timing inside the procedures, and timing in SQL*Plus. Notice how much longer it takes to fetch the cursor with your p_inlist?
(RHEL4 on P4 2.4C, Oracle 10.2.0.2)
SQL> exec p_inlist('1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20',:rc)
+000000000 00:00:00.000244000
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.00
SQL> print rc
OBJECT_ID OBJECT_NAME
        20 ICOL$
        15 UNDO$
         3 I_OBJ#
        17 FILE$
        13 UET$
         9 I_FILE#_BLOCK#
         7 I_TS#
        19 IND$
        14 SEG$
         6 C_TS#
         5 CLU$
        16 TS$
         8 C_FILE#_BLOCK#
        10 C_USER#
        12 FET$
        18 OBJ$
         2 C_OBJ#
         4 TAB$
        11 I_USER#
19 rows selected.
Elapsed: 00:00:06.29
SQL> exec p_inlist2('1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20',:rc)
+000000000 00:00:00.000163000
PL/SQL procedure successfully completed.
Elapsed: 00:00:00.00
SQL> print rc
OBJECT_ID OBJECT_NAME
        20 ICOL$
        19 IND$
        18 OBJ$
        17 FILE$
        16 TS$
        15 UNDO$
        14 SEG$
        13 UET$
        12 FET$
        11 I_USER#
        10 C_USER#
         9 I_FILE#_BLOCK#
         8 C_FILE#_BLOCK#
         7 I_TS#
         6 C_TS#
         5 CLU$
         4 TAB$
         3 I_OBJ#
         2 C_OBJ#
19 rows selected.
Elapsed: 00:00:00.00
SQL>