Question

写了一个sql函数报 错误：PLS-00201: identifier 'STR_SPLIT' must be declared

CREATE OR REPLACE FUNCTION 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 splitstr;

Answer 1

你那个不完整，差一个自定义类型，用这个试试：

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

用法：

SELECT *
FROM TABLE (CAST (fn_split ('1;;12;;123;;1234;;12345', ';;') AS ty_str_split
)
);

Answer 2

lz你好，RETURN str_split，这里str_split要是type（number/varchar2/.....）或者是自定义的type，如：create or replace type str_split as table of varchar2(200);
报错的原因就是这个。有问题再追问吧。