Query table column with user defined type : Select « Object Oriented « Oracle PL/SQL Tutorial

Oracle PL/SQL Tutorial
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32. Object Oriented
33. XML
34. Large Objects
35. Transaction
36. User Privilege
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Oracle PL/SQL Tutorial » Object Oriented » Select 
32. 11. 7. Query table column with user defined type
SQL>
SQL> create or replace type Address_Type
  2  as object
  3  (  street_addr1   varchar2(25),
  4     street_addr2   varchar2(25),
  5     city           varchar2(30),
  6     state          varchar2(2),
  7     zip_code       number
  8  )
  9  /

Type created.

SQL>
SQL> create table people
  2  name           varchar2(10),
  3    home_address   address_type,
  4    work_address   address_type
  5  )
  6  /

Table created.

SQL>
SQL> declare
  2      l_home_address address_type;
  3      l_work_address address_type;
  4  begin
  5      l_home_address := Address_Type'1 Street', null,'R''VA', 45678 );
  6      l_work_address := Address_Type'1 Way', null,'R''CA', 23456 );
  7
  8      insert into peoplename, home_address, work_address )values 'Tom Kyte', l_home_address, l_work_address );
  9  end;
 10  /

PL/SQL procedure successfully completed.

SQL>
SQL> column "HOME_ADDRESS.STATE" format a20
SQL> column "WORK_ADDRESS.STATE" format a20
SQL> select name, P.home_address.state, P.work_address.state from people P
  2  /


NAME       HOME_ADDRESS.STATE   WORK_ADDRESS.STATE
---------- -------------------- --------------------
Tom Kyte   VA                   CA

SQL> drop table people;

Table dropped.

SQL> drop type Address_Type;

Type dropped.
32. 11. Select
32. 11. 1. Selecting Rows from the Table with object type column
32. 11. 2. Select an individual column object from a table
32. 11. 3. Querying Rows from the object Table
32. 11. 4. SELECTing Only One Column in the Composite
32. 11. 5. COLUMN Formatting in SELECT for Object
32. 11. 6. ORA-00932: inconsistent datatypes: expected REF
32. 11. 7. Query table column with user defined type
32. 11. 8. Use table function to convert type to a 'table'
32. 11. 9. Create type and use it in inner query
32. 11. 10. Use user-defined type to combine query logic
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