oracle将字段字符分隔作为临时表

-----oracle将字段字符分隔作为临时表
select column_value as site_id
  from table (select fn_split_clob(dashboard_presend_sites_show, ',')
                from ems.t_isdt_user_info
               where hw_user_uuid = 'uuid~eVdYMzk3MzEy')

　　

create or replace function fn_split_clob      (p_str       in clob,
                                    p_delimiter in varchar2)
  return ty_str_split is
  j         INT := 0;
  i         INT := 1;
  len       INT := 0;
  len1      INT := 0;
  STR       varchar2(4000);
  str_split ty_str_split := ty_str_split();
Begin
  len  := LENGTH(p_str);
  len1 := length(p_delimiter);
  while j < len loop
    j := INSTR(P_str, p_delimiter, i);
    if j = 0 then
      j   := len;
      str := substr(p_str, i);
      str_split.extend;
      str_split(str_split.count) := str;
      if i >= len then
        exit;
      end if;
    else
      str := substr(p_str, i, j - i);
      i   := j + len1;
      str_split.extend;
      str_split(str_split.count) := str;
    end if;
  end loop;
  return str_split;
end fn_split_clob;