Sql Oracle 11g ORA-00904中的抽象数据类型：无效标识符

Oracle版本：

Oracle数据库11g快速版11.2.0.2.0版

-生产

    create type address_ty as object
    (street varchar2(50),
     city varchar2(50),
     state varchar2(25),
     postalcode integer);

    create or replace type person_ty as object
    (FullName varchar2(50),
     BirthDate date,
     Address address_ty,
     member function CalcAge (BirthDate in DATE) return number,
     PRAGMA RESTRICT_REFERENCES (CALCAGE, WNDS));

    create or replace type body person_ty as 
    member function CalcAge (BirthDate DATE) return number is
    begin
       return round(sysdate - BirthDate);
    end;
    end;
    /

    create table customer (customerId integer,
                       Person person_ty);

    describe customer;

    select attr_name, length, attr_type_name from user_type_attrs where type_name = 'PERSON_TY';

    select attr_name, length, attr_type_name from user_type_attrs where type_name = 'ADDRESS_TY';

    insert into customer values (1, person_ty('ABC', '01-JAN-95', address_ty('MG Road', 'Bangalore', 'KA', 560001)));

    select person.FullName from customer;

上面的语句显示一个错误-

ORA-00904：“人员”“全名”：无效标识符

如何解决错误

---

谢谢

我认为您需要用表限定列，因此它不会试图将

person

解释为表名；它需要是一个别名（不完全确定原因）：

select c.person.FullName from customer c;