輸入示例：select fn_split('1,2,3,4,5',',') from dual
輸出值：
1
2
3
4
5
當做TABLE的用法：
select * from TABLE(CAST(fn_split('中國,美國,日本', ',') AS ty_str_split)) a
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先執行：
CREATE OR REPLACE TYPE "TY_STR_SPLIT" IS TABLE OF VARCHAR2 (32000)
在執行
CREATE OR REPLACE 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(32000);
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;