Nested table in a subtype

Hi,
A question: Is it possible to have a nested table on a subtype?
If yes : How to declare the storage table for the nested table.
I will be really grateful for any help here.
Nina

Is it what you need ?
SQL> create or replace type nt_type is table of number;
  2  /
Type created.
SQL> create or replace type nt_obj is object (id number, ntt nt_type);
  2  /
Type created.
SQL> create table t (id number, ntobj nt_obj)
  2  nested table ntobj.ntt store as nest_tab;
Table created.Rgds.

Similar Messages

  • Oracle object, nested table on a subtype

    Hello,
    Is it possible to have a nested table on a subtype? If it is, can someone help me?
    Here is what I need help for:
    I have a supertype WORK, that have:
    multivalued attribute ADDRESS
    a attribute NAME, also the primary key
    The subtype is called EMPLOYEE, that have:
    multivalued attribute SPECIALTY
    a attribute NAME
    a attribute SSN
    So far have I got:
    //* The supertype *//
    create or replace type ADRESS_TP as object(
    ADRESS varchar2(50));
    create or replace type ADRESSTP as table of ADRESS_TP;
    create or replace WORK_TP as object(
    NAME varchar2(30),
    ADRESS ADRESSTP)
    NOT FINAL;
    create table WORK_TBL of WORK_TP(
    Primary key(NAME))
    nested table ADRESS store as NT_ADR(
    (Primary key(nested_table_id, ADRESS))
    organization index compress);
    //* The subtype *//
    create or replace type SPECIALTY_TP as object(
    ADRESS varchar2(50));
    create or replace type SPECIALTYTP as table of SPECIALTY_TP;
    create or replace EMPLOYEE_TP under work_tp(
    NAME varchar2(30),
    SSN number)
    FINAL;
    The multivalued attribute SPECIALTYTP has to be declared in WORK_TBL have I been told, but how can I do that?
    I'm using oracle 9i

    I'm not really sure what your problem is. In future please be specific about what it is you are trying to do and what it is that is not working. If it's an error please give us the error message and number. It's not the behaviour you are expecting please describe what it does. If it's that you simply don't understand please say what you don't understand.
    I go on like this because the code you have posted is somewhat confusing. The Oracle object-oriented implementation is not quite complete so that makes it hard for people who know OO but don't know Oracle. Whereas most of us who know Oracle aren't expert in OO. Also, I think you should be slightly more inventive in your names: there's so many things called ADRESS it's easy to get them tangled up.
    Anyway, here's my guess at what I think your problem is....
    SQL> CREATE OR REPLACE TYPE adress_t AS OBJECT(
      2  line1 VARCHAR2(50)
      3  ,line2 VARCHAR2(50)
      4  ,postcode VARCHAR2(8));
      5  /
    Type created.
    SQL>
    SQL> CREATE OR REPLACE TYPE adress_nt AS TABLE OF adress_t;
      2  /
    Type created.
    SQL> CREATE OR REPLACE TYPE work_t AS OBJECT(
      2   name VARCHAR2(30),
      3   adresses adress_nt)
      4  NOT FINAL;
      5  /
    Type created.
    SQL> CREATE TABLE work_tbl OF work_t
      2     NESTED TABLE adresses STORE AS adress_ntab
      3  /
    Table created.
    SQL> CREATE OR REPLACE TYPE specialty_t AS OBJECT(
      2  description VARCHAR2(50));
      3  /
    Type created.
    SQL> CREATE OR REPLACE TYPE specialty_nt AS TABLE OF specialty_t;
      2  /
    Type created.
    SQL>
    SQL> ALTER TYPE work_t ADD ATTRIBUTE specialities specialty_nt CASCADE
      2  /
    Type altered.
    SQL> DESC work_tbl
    Name                                      Null?    Type
    NAME                                               VARCHAR2(30)
    ADRESSES                                           ADRESS_NT
    SPECIALITIES                                       SPECIALTY_NT
    SQL> Cheers, APC

  • Constructor of nested table subtype

    The following code gives me an error PLS-00355: use of pl/sql table not allowed in this context (I checked in 11.2.0.2.0):
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      TYPE    t_number_tab     IS TABLE OF NUMBER;
      SUBTYPE t_number_tab_sub IS t_number_tab;
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    BEGIN
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      v_sub := t_number_tab_sub();
    END;I looked in docs and can't find a reason why this doesn't work. I know I can initialize v_sub with t_number_tab(), but I would like to know why my example above doesn't work.

    Welcome to the forum!
    Whenever you post provide your 4 digit Oracle version (result of SELECT * FROM V$VERSION)
    >
    The following code gives me an error PLS-00355: use of pl/sql table not allowed in this context (I checked in 11.2.0.2.0):
    DECLARE
      TYPE    t_number_tab     IS TABLE OF NUMBER;
      SUBTYPE t_number_tab_sub IS t_number_tab;
      v_sub t_number_tab_sub;
    BEGIN
      -- throws "PLS-00355: use of pl/sql table not allowed in this context":
      v_sub := t_number_tab_sub();
    END;I looked in docs and can't find a reason why this doesn't work. I know I can initialize v_sub with t_number_tab(), but I would like to know why my example above doesn't work.
    >
    You haven't really defined a subtype; just a different name for the type.
    Subtypes have to be based on scalar types. See the PL/SQL Language doc
    http://docs.oracle.com/cd/E11882_01/appdev.112/e10472/datatypes.htm#CHDEAFDJ
    >
    PL/SQL lets you define your own subtypes. The base type can be any scalar PL/SQL type, including a previously defined user-defined subtype.
    >
    Even though the compiler seems to allow it you have the equivalent of an 'unconstrained' subtype which is just another name for the type
    >
    Unconstrained Subtypes
    An unconstrained subtype has the same set of values as its base type, so it is only another name for the base type.
    >
    Since all you have changed is the name you still have to use the constructor for the actual type: t_number_tab()

  • How to insert into a table with a nested table which refer to another table

    Hello everybody,
    As the title of this thread might not be very understandable, I'm going to explain it :
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    In the table Subscriber, I have a nested table modeling the Loan made by the subscriber.
    And finally, this nested table refers to the Book table.
    Here the code concerning the creation of theses tables :
    Book :
    create or replace type TBook as object
    number int,
    title varchar2(50)
    Loan :
    create or replace type TLoan as object
    book ref TBook,
    loaning_date date
    create or replace type NTLoan as table of TLoan;
    Subscriber :
    create or replace type TSubscriber as object
    sub_id int,
    name varchar2(25)
    loans NTLoan
    Now, my problem is how to insert into a table of TSubscriber... I tried this query, without any success...
    insert into OSubscriber values
    *(1, 'LEVEQUE', NTLoan(*
    select TLoan(ref(b), '10/03/85') from OBook b where b.number = 1)
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    Oracle returned me this error :
    SQL error : ORA-00936: missing expression
    00936. 00000 - "missing expression"
    Thank you for your help

    1) NUMBER is a reserved word - you can't use it as identifier:
    SQL> create or replace type TBook as object
      2  (
      3  number int,
      4  title varchar2(50)
      5  );
      6  /
    Warning: Type created with compilation errors.
    SQL> show err
    Errors for TYPE TBOOK:
    LINE/COL ERROR
    0/0      PL/SQL: Compilation unit analysis terminated
    3/1      PLS-00330: invalid use of type name or subtype name2) Subquery must be enclosed in parenthesis:
    SQL> create table OSubscriber of TSubscriber
      2  nested table loans store as loans
      3  /
    Table created.
    SQL> create table OBook of TBook
      2  /
    Table created.
    SQL> insert
      2    into OBook
      3    values(
      4           1,
      5           'No Title'
      6          )
      7  /
    1 row created.
    SQL> commit
      2  /
    Commit complete.
    SQL> insert into OSubscriber
      2    values(
      3           1,
      4           'LEVEQUE',
      5           NTLoan(
      6                  (select TLoan(ref(b),DATE '1985-10-03') from OBook b where b.num = 1)
      7                 )
      8          )
      9  /
    1 row created.
    SQL> select  *
      2    from  OSubscriber
      3  /
        SUB_ID NAME
    LOANS(BOOK, LOANING_DATE)
             1 LEVEQUE
    NTLOAN(TLOAN(000022020863025C8D48614D708DB5CD98524013DC88599E34C3D34E9B9DBA1418E49F1EB2, '03-OCT-85'))
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      3  not final;
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    TAB1_NESTED                    TAB1
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    -- plus another nested table
    SQL> select table_name, parent_table_name, parent_table_column
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    TABLE_NAME                     PARENT_TABLE_NAME
    PARENT_TABLE_COLUMN
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    TREAT(SYS_NC_ROWINFO$ AS "GINTS"."H2")."SOME_TEXTS"
    SYSNTfsl/+pz03+jgQAB/AQB27g==  TAB1_NESTED
    TREAT(SYS_NC_ROWINFO$ AS "GINTS"."H3")."SOME_TEXTS"
    TAB1_NESTED                    TAB1
    B
    SQL> desc "SYSNTfsl/+pzu3+jgQAB/AQB27g=="
    Name                                      Null?    Type
    TXT                                                VARCHAR2(100)OK let it be and now I'm trying to export and import in another schema:
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    . . exported "GINTS"."SYSNTfsl/+pz03+jgQAB/AQB27g=="         0 KB       0 rows
    . . exported "GINTS"."TAB1_NESTED"                           0 KB       0 rows
    . . exported "GINTS"."SYSNTfsl/+pzu3+jgQAB/AQB27g=="         0 KB       0 rows
    Master table "GINTS"."SYS_EXPORT_SCHEMA_01" successfully loaded/unloaded
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    Copyright (c) 1982, 2009, Oracle and/or its affiliates.  All rights reserved.
    Connected to: Oracle Database 11g Release 11.2.0.1.0 - Production
    Master table "GINTS1"."SYS_IMPORT_FULL_01" successfully loaded/unloaded
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    Processing object type SCHEMA_EXPORT/ROLE_GRANT
    Processing object type SCHEMA_EXPORT/DEFAULT_ROLE
    Processing object type SCHEMA_EXPORT/PRE_SCHEMA/PROCACT_SCHEMA
    Processing object type SCHEMA_EXPORT/TYPE/TYPE_SPEC
    Processing object type SCHEMA_EXPORT/TABLE/TABLE
    ORA-39083: Object type TABLE:"GINTS1"."TAB1" failed to create with error:
    ORA-02320: failure in creating storage table for nested table column B
    ORA-00904: : invalid identifier
    Failing sql is:
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    Processing object type SCHEMA_EXPORT/TABLE/TABLE_DATA
    Processing object type SCHEMA_EXPORT/TABLE/INDEX/INDEX
    Processing object type SCHEMA_EXPORT/TABLE/INDEX/STATISTICS/INDEX_STATISTICS
    ORA-39083: Object type INDEX_STATISTICS failed to create with error:
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    ORA-39083: Object type INDEX_STATISTICS failed to create with error:
    ORA-01403: no data found
    ORA-01403: no data found
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    Processing object type SCHEMA_EXPORT/TABLE/STATISTICS/TABLE_STATISTICS
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    TIA
    Gints

    Tom Kyte has said it repeatedly ... I will repeat it here for you.
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    Store your data relationally and build object_views on top of them.
    http://www.morganslibrary.org/reference/object_views.html
    If you model properly, and store properly, you don' have any issues.

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    Message was edited by:
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