ORACLE不能像MSSQL那樣支持直接返回表類型，所以要先創建一種自定義類型。這裏用到的是嵌套表（Nested Table）。

-- Nested Table

CREATE OR REPLACE TYPE split_str IS TABLE OF VARCHAR(100);

/

-- Function

CREATE OR REPLACE FUNCTION fn_Split

(

p_Str VARCHAR2,

p_Delimiter VARCHAR2

)

RETURN split_str PIPELINED

AS

v_Str VARCHAR(4000) := p_Str;

v_Index NUMBER;

v_SubLength NUMBER;

BEGIN

-- p_Delimiter is null

IF p_Delimiter IS NULL THEN

FOR x IN 1..LENGTH(v_Str)

LOOP

PIPE ROW(SUBSTR(V_Str,x,1));

END LOOP;

RETURN;

END IF;

v_index := INSTR(v_Str,p_Delimiter);

WHILE v_Index <> 0

LOOP

PIPE ROW(SUBSTR(v_Str,1,v_Index-1));

v_SubLength := LENGTH(v_Str) - (v_index + LENGTH(p_Delimiter) - 1);

v_Str := SUBSTR(v_Str,-v_SubLength,v_SubLength);

v_index := INSTR(v_Str,p_Delimiter);

END LOOP;

PIPE ROW(v_Str);

RETURN;

END;

/

-- 調用（第二種方式更好）

SELECT fn_split('This@@is@@it','@@') FROM dual;

SELECT * FROM Table(fn_split('This@@is@@it','@@'));

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