Oracle中的Split函数用法：
首先需要定义 2 个类型
1. Row 类型
CREATE OR REPLACE TYPE ty_row_str_split as object (strValue VARCHAR2 (4000))
2. Table 类型
CREATE OR REPLACE TYPE ty_tbl_str_split IS TABLE OF ty_row_str_split
再创建函数：
CREATE OR REPLACE FUNCTION fn_split(p_str IN VARCHAR2,
p_delimiter IN VARCHAR2)
RETURN ty_tbl_str_split IS
j INT := 0;
i INT := 1;
len INT := 0;
len1 INT := 0;
str VARCHAR2(4000);
str_split ty_tbl_str_split := ty_tbl_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) := ty_row_str_split(strValue => 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) := ty_row_str_split(strValue => str);
END IF;
END LOOP;
