oracle存储过程之切割字符串(一)

　　oracle存储过程之切割字符串
　　

CREATE OR REPLACE TYPE ty_str_split IS TABLE OF VARCHAR2 (4000)tools包头：　　

create or replace package common_tool is
-- Author  : ADMINISTRATOR
-- Created : 2012/10/25 11:04:58
-- Purpose : 通用工具
function fn_split (p_str IN VARCHAR2, p_delimiter IN VARCHAR2)
RETURN ty_str_split;
end common_tool;tools pakage body　　

create or replace package body common_tool is

-- 功能描述：用指定分隔符切割输入的字符串，返回一维数组，每个数组元素为一个子串。
--p_str:原始字符串
--p_delimiter：分隔符
function fn_split (p_str IN VARCHAR2, 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;

end common_tool;