文字列を複数行のデータに分割します。

原文の住所――http://blog.csdn.net/qq525099302/article/details/47146537

--       (      )
create or replace type strsplit_type as table of varchar2(4000) ;
--       
create or replace function strsplit(p_value varchar2, p_split varchar2 := ',') --usage: select * from table(strsplit('1,2,3,4,5')) return strsplit_type pipelined is v_idx integer;
  v_str       varchar2(500);
  v_strs_last varchar2(4000) := 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;