Oracle字符拆分函數

create or replace function strsplit(p_value varchar2,
                                    p_split varchar2 := ',')
 return ty_str_split
  pipelined is
  v_idx       integer;
  v_str       varchar2(3000);
  v_strs_last varchar2(4000) := trim(p_split from p_value);

begin
  loop
    v_idx := instr(v_strs_last, p_split);
    exit when v_idx = 0;
    v_str       := substr(v_strs_last, 1, v_idx - 1);
    v_strs_last := substr(v_strs_last, v_idx + 1);
    pipe row(v_str);
  end loop;
  pipe row(v_strs_last);
  return;

end strsplit;

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