Oracle sqlplus - 定义没有属性但嵌套表的类型表

Question

我的作业有问题。我有以下类型定义：

-- Type definitions
CREATE OR REPLACE TYPE languages_table_t AS TABLE of VARCHAR2(20);
/

CREATE OR REPLACE TYPE phones_table_t AS TABLE of NUMBER;
/

CREATE OR REPLACE TYPE tourist_t AS OBJECT (
  -- ...
  -- some simple attrubutes
  -- one attribute of user defined type
  -- more simple attrubutes
  -- ...
) NOT FINAL;
/

CREATE OR REPLACE TYPE guide_t UNDER tourist_t (
  languages   languages_table_t,
  phones      phones_table_t
);
/
-- All types are created successfully


-- table definitions:

CREATE TABLE Tourist OF tourist_t (
  -- all simple attributes with nullity constraints
  CONSTRAINT PK_TOURIST PRIMARY KEY (username),
) NESTED TABLE the_UDT_attr STORE AS the_user_defined_type;
-- Created successfully

CREATE TABLE Guide OF guide_t (
  CONSTRAINT PK_GUIDE PRIMARY KEY (username)
) NESTED TABLE languages STORE AS guide_languages
  NESTED TABLE phones STORE AS guide_phones;
-- returns mystic error

运行最后一条创建指令时，出现以下错误：

CREATE TABLE Guide OF guide_t (
*
ERROR at line 1:
ORA-22913: must specify table name for nested table column or attribute

我已经搜索过这个错误，但它似乎对我的定义过于具体，我找不到解决方法。请，任何帮助将不胜感激。我需要一个关于如何解决这类错误、如何解决它们或在哪里阅读它的想法。

sqlplus的版本是：

SQL> SELECT * FROM V$VERSION;

BANNER
----------------------------------------------------------------
Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
PL/SQL Release 10.2.0.4.0 - Production
CORE    10.2.0.4.0  Production
TNS for Solaris: Version 10.2.0.4.0 - Production
NLSRTL Version 10.2.0.4.0 - Production

如果您需要任何其他信息来帮助我，请提出，我会更新问题。

谢谢！

Answer 1

还需要为超类型的属性定义嵌套表存储。当我将其添加到第 155 行时，udt_tables.sql 脚本有效：

CREATE TABLE Guia OF guia_t (
  CONSTRAINT PK_GUIA PRIMARY KEY (username)
) NESTED TABLE idiomas STORE AS guia_idiomas
  NESTED TABLE telefonos STORE AS guia_telefonos
  NESTED TABLE tipoHitosPreferidos STORE as something;