Null value in Nested table of nested table for xml guru Steve Muench

Question

The procedure I am using takes xml document with nested levels and insert into single table using DBMS_XMLSave.insertXML.
I am able to insert into table without any error message but when I am selecting row from table, it is showing null values in all the column of nested table's inner nested table.
When I am removing nested table's nested table by replacing with object type, it is showing data of object type for the first occurance and ignoring the rest nested occurance.
Help is greatly appreciated.
Below is the sql I used to create objects and table:-
Create or Replace Type addressType as Object
Line_one     varchar2(40),
Line_two     varchar2(40),
City          Varchar2(30),
State          Varchar2(2),
zip          Varchar2(10)
Create or Replace Type ce_reqType as Object
Status               varchar2(25),
Status_date          Date,
type_code          Varchar2(25),
review_begin_date     Date,
assigned_review_date     date
Create or Replace type ce_reqListType
as table of ce_reqType;
Create or Replace Type LicenseType as Object
type_code          Varchar2(10),
license_number          Varchar2(16),
ce_requirements      ce_reqListType
Create or Replace type LicenseListType
as table of LicenseType;
Create table IndividualType
individual_id          Number(9),
social_security_number Varchar2(9),
Last_name          varchar2(40),
First_name          Varchar2(40),
Middle_name          Varchar2(40),
Birth_date          Date,
address          addressType,
Licenses          LicenseListType
nested table licenses store as licensestab
(nested table ce_requirements store as lic_ce_reqtab);

Answer 1

Maddy wrote:
dbms_output.put_line('The count is '||bookset.count); --> I can see COUNT =1 (why)Because instead of adding an element to bookset collectionto are assigning (ergo replacing) it a collection containing last fetched book. Use:
declare
    bookset book_table;
    ln_cnt pls_integer;
begin
    bookset := book_table(book_obj('madhu','kongara','sudhan'));
    dbms_output.put_line('The count is '||bookset.count); --> I can see COUNT =1
    bookset := book_table(); --> Assigning back to NULL.
    dbms_output.put_line('The count is '||bookset.count); --> I can see count as 0
    for rec in (select * from book) loop --> Now Looping two times.
      dbms_output.put_line(' name > '||rec.name);
      bookset.extend;
      bookset(bookset.count) := book_obj(rec.name, rec.author, rec.abstract);
    end loop;
    dbms_output.put_line('The count is '||bookset.count); --> I can see COUNT =1 (why)
end;
The count is 1
The count is 0
name > Harry Potter
name > Ramayana
The count is 2
PL/SQL procedure successfully completed.
SQL> Or better use bulk collect:
declare
    bookset book_table;
    ln_cnt pls_integer;
begin
    bookset := book_table(book_obj('madhu','kongara','sudhan'));
    dbms_output.put_line('The count is '||bookset.count); --> I can see COUNT =1
    bookset := book_table(); --> Assigning back to NULL.
    dbms_output.put_line('The count is '||bookset.count); --> I can see count as 0
    select  book_obj(name,author,abstract)
      bulk collect
      into  bookset
      from  book;
    for i in 1..bookset.count loop --> Now Looping two times.
      dbms_output.put_line(' name > '||bookset(i).name);
    end loop;
    dbms_output.put_line('The count is '||bookset.count); --> I can see COUNT =1 (why)
end;
The count is 1
The count is 0
name > Harry Potter
name > Ramayana
The count is 2
PL/SQL procedure successfully completed.
SQL> SY.