Oracle返回表类型的自定义函数

分割字符串的函数create or replace function sf_Split_String( sourceString varchar2,--待分割字符串，格式如

分割字符串的函数

create or replace function sf_Split_String(

sourceString varchar2,--待分割字符串，格式如'wangqingku,shanghai3h'

subString varchar2--分隔符

)

return Varchar2Varray

is

len integer:=length(subString);

lastpos integer:=1-len;

pos integer;

num integer;

i integer:=1;

ret Varchar2Varray:=Varchar2Varray(null);

begin

/*create or replace type Varchar2Varray is varray(100) of varchar2(40);*/

/*

Create By: wangqingkun@shanghai3h.com

Create Date:2010-07-02

Description:分割字符串返回字符串列表

select * from table(cast(sf_Split_String('Tube,YueXia,ZhangYongLi',',') as Varchar2Varray))

*/

loop

pos:=instr(sourceString,subString,lastpos+len);

if pos>0 then --found

num:=pos-(lastpos+len);

else--no found

num:=length(sourceString)+1-(lastpos+len);

end if;

if i>ret.last then

ret.extend;

end if;

ret(i):=substr(sourceString,lastpos+len,num);

exit when pos=0;

lastpos:=pos;

i:=i+1;

end loop;

return ret;

end sf_Split_String;