Selecting Nested Table Elements : Nested Table Column « Collections « Oracle PL/SQL Tutorial

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Oracle PL/SQL Tutorial » Collections » Nested Table Column 
26. 9. 5. Selecting Nested Table Elements

You select the elements in a nested table using a SELECT statement.

SQL>
SQL>
SQL> CREATE Or Replace TYPE AddressType AS OBJECT (
  2    street VARCHAR2(15),
  3    city   VARCHAR2(15),
  4    state  CHAR(2),
  5    zip    VARCHAR2(5)
  6  );
  7  /

SQL>
SQL> CREATE Or Replace TYPE nested_table_AddressType AS TABLE OF AddressType;
  2  /

Type created.

SQL>
SQL> CREATE TABLE employee (
  2    id         INTEGER PRIMARY KEY,
  3    first_name VARCHAR2(10),
  4    last_name  VARCHAR2(10),
  5    addresses  nested_table_AddressType
  6  )
  7  NESTED TABLE
  8    addresses
  9  STORE AS
 10    nested_addresses;

Table created.

SQL>
SQL>
SQL> INSERT INTO employee VALUES (
  2    1'Steve', 'Brown',
  3    nested_table_AddressType(
  4      AddressType('2 Ave', 'City', 'MA', '12345'),
  5      AddressType('4 Ave', 'City', 'CA', '54321')
  6    )
  7  );

row created.

SQL>
SQL> select from employee;

ID FIRST_NAME LAST_NAME  ADDRESSES(STREET, CITY, STATE, ZIP)
--------------------------------------------------------------------------------------------------------
1  Steve      Brown      NESTED_TABLE_ADDRESSTYPE(ADDRESSTYPE('2 Ave', 'City', 'MA', '12345'), ADDRESSTYPE('4 Ave', 'City', 'CA', '54321'))


SQL>
SQL> drop table employee;

Table dropped.

SQL>
SQL>
26. 9. Nested Table Column
26. 9. 1. Using a Nested Table Type to Define a Column in a Table
26. 9. 2. Getting Information on Nested Tables
26. 9. 3. Set the depth to 2 and describe a nested table
26. 9. 4. Populating a Nested Table with Elements
26. 9. 5. Selecting Nested Table Elements
26. 9. 6. Modifying Nested Table Elements
26. 9. 7. Update the first record in the nested table.
26. 9. 8. Delete one record in the nested table
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