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我创建了两个对象T_PERSONS,T_BUSINESS_PERSON,其中T_BUSINESS PERSON是子类型,T_PERSONS是超类型。我想用一个子类型对象代替一个超类型对象,但它不工作?
---创建T_PERSONS对象---
CREATE OR REPLACE
TYPE T_PERSONS AS OBJECT
(id integer,
first_name varchar2(10),
last_name varchar2(10),
dob DATE,
phone varchar2(12),
address t_address,
) NOT FINAL;
---创建T_BUSINESS_PERSON对象---
CREATE TYPE t_business_person UNDER t_persons
(title varchar2(20),
company varchar2(20)
);
现在我创建了一个对象表object_customers
CREATE TABLE object_customers OF t_persons
将数据插入object_customers
INSERT INTO object_customers VALUES
(t_persons(1,'Jason','Bond','03-APR-1955','800-555-1211',
t_address('21 New Street','Anytown','CA','12345')
));
在这种情况下
,数据已经插入正确
INSERT INTO object_customers VALUES
(t_business_person(2,'Steve','Edwards','03-MAR-1955','800-555-1212',
t_address('1 Market Street','Anytown','VA','12345'),'Manager','XYZ Corp'
));
现在,在这种情况下,即有错误
Error-attribute or element value is larger than specified in type.
请帮助。
我找到了解决方案... anywayz非常感谢。 – Nikhil