How to write the SQL?

Question

I have a nested table as following:
create type mytype as table of number(5,0);
create table test(
a number(5),
b mytype
nested table b store as test_b_tab;
And the table has the following dataF
a b
1 1
2
3
Q1. If I wanna delete b = 3 where a = 1. What should I do in SQLH
Q2. If I wanna set b = 8 where a = 1 and b = 3. What should I do in SQL?
Give me a hand, please.
And thank you first!

Answer 1

HI,
SEE HOW TO WORK ON NESTED AND VARRAY TABLES AND WRITE YOUR QUERIES AS YOUR WISH.......
--//CREATING THE VARRAYS AND NESTED TABLES
--//AND DOING THE DML OPERATIONS ON IT     
SQL> create type book as object(id number, name varchar2(20));
2 /
Type created.
SQL> create type booklist as varray(10) of book;
2 /
Type created.
SQL> create type booklisttab as table of book;
2 /
Type created.
SQL> create table my_tabv(slno number(10) primary key, name varchar2(20), books booklist);
Table created.
SQL> create table my_tabnst(slno number(10) primary key, name varchar2(20), books booklisttab)
2 nested table books store as books_store;
Table created.
SQL> INSERT INTO MY_TABV VALUES (1, 'KHALEEL',BOOKLIST(BOOK(1,'ENGLISH'),BOOK(2,'HINDI')));
1 row created.
SQL> INSERT INTO MY_TABV VALUES (2,'MOHAN',BOOKLIST(BOOK(1,'ENGLISH'),BOOK(2,'TELUGU')));
1 row created.
SQL> INSERT INTO MY_TABV VALUES (3,'SRIDHAR',BOOKLIST(BOOK(1,'SANSCRIT'),BOOK(2,'TAMIL')));
1 row created.
SQL> INSERT INTO MY_TABNST VALUES(1,'KHALEEL',BOOKLISTTAB(BOOK(1,'ENGLISH'),BOOK(2,'HINDI')));
1 row created.
SQL> INSERT INTO MY_TABNST VALUES(2,'MOHAN',BOOKLISTTAB(BOOK(1,'ENGLISH'),BOOK(2,'TELUGU')));
1 row created.
SQL> INSERT INTO MY_TABNST VALUES(3,'SRIDHAR',BOOKLISTTAB(BOOK(1,'SANSCRIT'),BOOK(2,'TAMIL')));
1 row created.
SQL> SQL> SELECT * FROM MY_TABV;
SLNO NAME
BOOKS(ID, NAME)
1 KHALEEL
BOOKLIST(BOOK(1, 'ENGLISH'), BOOK(2, 'HINDI'))
2 MOHAN
BOOKLIST(BOOK(1, 'ENGLISH'), BOOK(2, 'TELUGU'))
3 SRIDHAR
BOOKLIST(BOOK(1, 'SANSCRIT'), BOOK(2, 'TAMIL'))
SQL> SELECT * FROM MY_TABNST;
SLNO NAME
BOOKS(ID, NAME)
1 KHALEEL
BOOKLISTTAB(BOOK(1, 'ENGLISH'), BOOK(2, 'HINDI'))
2 MOHAN
BOOKLISTTAB(BOOK(1, 'ENGLISH'), BOOK(2, 'TELUGU'))
3 SRIDHAR
BOOKLISTTAB(BOOK(1, 'SANSCRIT'), BOOK(2, 'TAMIL'))
SQL> insert into table(select books from my_tabnst where slno=1) values(3,'BENGALI');
1 row created.
SQL> select name from table(select books from my_tabNST where slno=1);
NAME
ENGLISH
HINDI
BENGALI
*****************************Khaleel*******************