Send values to IN query with parameter

Question

Subject: send values to IN query with parameter
Hello. Hope I'll explain my problem well enough:
I have a query:
-- select id from table where id in ('100')
Now I used parameter for the IN part:
-- select id from table where id in (:param)
and I gave the parameter the value 100.
now I want to have the query with two values:
-- select id from table where id in ('100','200')
I tried to use the parameter and give him the value of: '100','200'.
It didn't worked :(
Is there a syntax to give the parameter more then one value for the IN query (with out using another table or function etc')?
Thanks in advance,Roy.

Answer 1

This is the best solution I have for it.
variable parameter varchar2(4000);
exec :parameter := 'SYSTEM,SYS';
select username
from dba_users
where username in ( select COLUMN_VALUE from table  (split_string(:parameter,',')))It uses this function
CREATE OR REPLACE
type string_table  as table of varchar2(4000)
CREATE OR REPLACE
FUNCTION split_string (
     string IN varchar2,
    delimiter IN varchar2
) RETURN  string_table IS
     tab string_table;
     pre integer;
     post integer;
     step integer;
     i integer;
BEGIN
     pre := 1;
     step := length(delimiter);
     i := 0;
     tab := string_table();
     loop
          tab.extend;
          i := i + 1;
          post := instr(string,delimiter,pre);
          if ( post = 0 ) then
               tab(i) := substr(string,pre);
               return tab;
          end if;
          tab(i) := substr(string,pre,post-pre);
          pre := post + step;
     end loop;
END;
/Bye Alessandro