oracle 字符串分割函数

首先创建一个类型：

CREATE OR REPLACE TYPE str_split IS TABLE OF VARCHAR2 (4000);

创建函数：

 CREATE OR REPLACE FUNCTION func_splitstr(p_string IN VARCHAR2, p_delimiter IN VARCHAR2)
     RETURN str_split
     PIPELINED
 AS
     v_length   NUMBER := LENGTH(p_string);
     v_start    NUMBER := 1;
     v_index    NUMBER;
 BEGIN
     WHILE(v_start <= v_length)
     LOOP
         v_index := INSTR(p_string, p_delimiter, v_start);

         IF v_index = 0
         THEN
             PIPE ROW(SUBSTR(p_string, v_start));
             v_start := v_length + 1;
         ELSE
             PIPE ROW(SUBSTR(p_string, v_start, v_index - v_start));
             v_start := v_index + 1;
         END IF;
     END LOOP;

     RETURN;
 END func_splitstr;