使用表函数切割字符串

无详细内容 无 CREATE OR REPLACE TYPE table_userid is table of varchar2(100); create or replace function get_userid_tab(v_str in varchar2) return table_userid pipelined as v_new_str varchar2(4000); begin if nvl(v_str,null) is not null then v

CREATE OR REPLACE TYPE table_userid is table of varchar2(100); 

create or replace function get_userid_tab(v_str in varchar2) return table_userid pipelined as 

v_new_str varchar2(4000); 

begin 

 if nvl(v_str,null) is not null then 


 v_new_str:=v_str; 

 while 1=1 loop 

 if instr(v_new_str,',')=0 then 

 pipe row(to_number(v_new_str)); 

 exit; 

 else 

 pipe row(to_number(substr(v_new_str,1,instr(v_new_str,',')-1))); 

 v_new_str:=substr(v_new_str,instr(v_new_str,',')+1); 

 end if; 

 end loop; 

 end if; 

 return; 

end; 

测试: select * from table(get_userid_tab('16,17,18,19,20')); 

结果: 
16 
17 
18 
19 
20