我在 pl/sql 中编写了一个自定义函数,它根据提供的分隔符将一个 clob 变量拆分为一组字符串,但它没有按预期工作,请帮助我解决代码问题。
create or replace
FUNCTION SPLITCLOB (p_in_string clob, p_delim VARCHAR2) RETURN t_array
IS
i number :=0;
pos number :=0;
lv_str clob := p_in_string;
Strings t_array:=t_array ();
Begin
-- determine first chuck of string
pos := DBMS_LOB.INSTR(lv_str,p_delim,1,1);
If ( pos = 0) Then
i := i + 1;
strings.Extend();
strings(i) := DBMS_LOB.SUBSTR(lv_str,1);
RETURN strings;
End If;
-- while there are chunks left, loop
WHILE ( pos != 0) LOOP
-- increment counter
i := i + 1;
-- create array element for chuck of string
strings.EXTEND();
strings(i) := DBMS_LOB.SUBSTR(lv_str,1,pos-1);
-- remove chunk from string
lv_str := DBMS_LOB.SUBSTR(lv_str,pos+1,dbms_lob.getLength(lv_str));
-- determine next chunk
pos := DBMS_LOB.INSTR(lv_str,p_delim,1,1);
-- no last chunk, add to array
IF pos = 0 THEN
strings.extend();
strings(i+1) := lv_str;
END IF;
End Loop;
-- return array
RETURN strings;
End Splitclob;
这t_array()
是下面提供的自定义类型定义
create or replace
TYPE "T_ARRAY"
AS TABLE OF VARCHAR2(500);
提前致谢