Convert comma separated string to array in PL/SQL

Question

How do I convert a comma separated string to a array?

I have the input \'1,2,3\' , and I need to convert it into an array.

Answer 1

Simple Code

    create or replace function get_token(text_is varchar2, token_in number, delim_is varchar2 := ';') return varchar2 is
       text_ls varchar2(2000);
       spos_ln number;
       epos    _ln number;
    begin
       text_ls := delim_is || text_is || rpad(delim_is, token_in, delim_is);
       spos_ln := instr(text_ls, delim_is, 1, token_in);
       epos_ln := instr(text_ls, delim_is, 1, token_in+1);
       return substr(text_ls, spos_ln+1, epos_ln-spos_ln-1);
    end get_token;