Question

我的sales_person_type定义如下：

CREATE OR REPLACE TYPE sales_person_type UNDER person_type (
     salesAppointments     sales_person_appointments
);

这是person_type的子类，定义如下：

CREATE OR REPLACE TYPE person_type AS OBJECT (
   personID           NUMBER,
   forename             VARCHAR2(30),
   surname              VARCHAR2(20),
   dateOfBirth          DATE
) NOT FINAL;

我试图创建一个销售人员表并将主键指定为超类属性，如下所示：

CREATE TABLE sales_person_table OF sales_person_type (  
  PRIMARY KEY (personID),
  OBJECT IDENTIFIER IS PRIMARY KEY)                       
  NESTED TABLE salesAppointments STORE AS sale_appointment_table (  
    (PRIMARY KEY(NESTED_TABLE_ID, appointmentID))             
    ORGANIZATION INDEX COMPRESS)                         
  RETURN AS LOCATOR

但是我收到了这个错误：

SQL错误：ORA-02330：不允许使用数据类型规范 02330. 00000 - ＆＃34;数据类型规范不允许＆＃34; *原因：尝试在列中指定数据类型对象表的约束规范。

我认为这是因为我试图将主键分配为超类属性？这是正确的语法吗？

干杯。

编辑：

立即行动，感谢Dimitry。

Answer 1

检查CREATE TABLE for OID子句的语法：

SQL> CREATE OR REPLACE TYPE person_type AS OBJECT (
  2     personID           NUMBER,
  3     forename             VARCHAR2(30),
  4     surname              VARCHAR2(20),
  5     dateOfBirth          DATE
  6  ) NOT FINAL;
  7  /

SQL>  create or replace type sale_appointment is object
  2   (
  3     appointmentID integer
  4   );
  5  /

Тип создан.

SQL> create type sales_person_appointments as table of sale_appointment;
  2  /


SQL> CREATE OR REPLACE TYPE sales_person_type UNDER person_type (
  2       salesAppointments     sales_person_appointments
  3  );
  4  /

SQL> CREATE TABLE sales_person_table OF sales_person_type (
  2    PRIMARY KEY (personID)
  3  )
  4  OBJECT IDENTIFIER IS PRIMARY KEY
  5  NESTED TABLE salesAppointments STORE AS sale_appointment_table (
  6  (PRIMARY KEY(NESTED_TABLE_ID, appointmentID))
  7   ORGANIZATION INDEX COMPRESS)
  8   RETURN AS LOCATOR
  9  /

Table created.

Oracle使用超类属性作为主键创建表

1 个答案: