How to take the values from a String ( CSV values).

Question

Hi All,
I am passing csv String to a procedure as in parameter,but I have to take the values from a csv String one by one.Please let me know Is there any StringTokenizer function in oracle to take values like in java. Here is my javacode.
import java.util.StringTokenizer;
public class Sample {
     public static void main(String[] args) {
          String s="one,two,three,four,five";
          StringTokenizer stringTokenizer=new StringTokenizer(s,",");
          System.out.println( stringTokenizer.countTokens());
          System.out.println(stringTokenizer.hasMoreTokens());
          while(stringTokenizer.hasMoreTokens()){
                    System.out.print(stringTokenizer.nextToken());
o/p: one two three four five

Answer 1

Something based around one of these two methods should assist...
select substr( the_string 
              , decode( level, 1, 1, instr(the_string,',',1,level-1)+1)
              , decode( instr(the_string,',',1,level), 0, length(the_string), instr(the_string,',',1,level) - decode( level, 1, 0, instr(the_string,',',1,level-1))-1)
              ) the_value
              from ( select '10,12,20,30,30,3,12,12,56' the_string
                     from dual
              connect by level < length(replace(translate(the_string,'01234567890','00000000000'),'0')) + 2
or
SQL> select REGEXP_SUBSTR ('a,b,c,d,e', '[^,]+', 1, level) from dual connect by level<=5
  2  /
REGEXP_SU
a
b
c
d
e
SQL>