fn_split 用法 

 1 CREATE OR REPLACE FUNCTION fn_split (p_str IN VARCHAR2, p_delimiter IN VARCHAR2)
 2   RETURN ty_str_split
 3 IS
 4   j INT := 0;
 5   i INT := 1;
 6   len INT := 0;
 7   len1 INT := 0;
 8   str VARCHAR2 (4000);
 9   str_split ty_str_split := ty_str_split ();
10 BEGIN
11   len := LENGTH (p_str);
12   len1 := LENGTH (p_delimiter);
13 
14   WHILE j < len
15   LOOP
16     j := INSTR (p_str, p_delimiter, i);
17 
18     IF j = 0
19     THEN
20         j := len;
21         str := SUBSTR (p_str, i);
22         str_split.EXTEND;
23         str_split (str_split.COUNT) := str;
24 
25         IF i >= len
26         THEN
27           EXIT;
28         END IF;
29     ELSE
30         str := SUBSTR (p_str, i, j - i);
31         i := j + len1;
32         str_split.EXTEND;
33         str_split (str_split.COUNT) := str;
34     END IF;
35   END LOOP;
36 
37   RETURN str_split;
38  -- select * from table (cast( fn_split('12,45',',') as ty_str_split)) 
39 END fn_split;

 

posted on 2014-10-22 15:17  诗意盎然  阅读(699)  评论(0)    收藏  举报

导航