ORA-01422: 实际返回的行数超出请求的行数
做了个函数的例子，随便写了个，如下：

create or replace function type_function(userno1 varchar2)return varchar2istype yyy is table of varchar2(10) index by binary_integer;xx yyy;vv varchar2(40);begin   vv :='1233';   select mobileid  into xx(20) from tuserinfo where userno=userno1;   vv :=xx(20);   return vv;   end;