в 13:45, 26 мая 2010

2010-05-26T13:45:19Z

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2010-05-26T10:02:38Z

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==VALUE function for object==



<source lang="sql">

SQL> CREATE OR REPLACE TYPE address_obj as OBJECT(
2 street VARCHAR2(20),
3 city VARCHAR2(20),
4 state CHAR(2),
5 zip CHAR(5));
6 /
Type created.
SQL>
SQL> CREATE TABLE address_table OF ADDRESS_OBJ;
Table created.
SQL>
SQL> INSERT INTO address_table VALUES (ADDRESS_OBJ("1 A St.","Mobile","AL","36608"));
1 row created.
SQL>
SQL> CREATE TABLE client (name VARCHAR2(20),
2 address REF address_obj scope is address_table);
Table created.
SQL>
SQL> INSERT INTO client SELECT "Walsh", REF(aa) FROM address_table aa;
1 row created.
SQL>

SQL>
SQL> -- Address_table (which contains row objects) using the VALUE function:
SQL>
SQL> SELECT VALUE(aa)
2 FROM address_table aa;
VALUE(AA)(STREET, CITY, STATE, ZIP)
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
ADDRESS_OBJ("1 A St.", "Mobile", "AL", "36608")
SQL>
SQL>
SQL>
SQL>
SQL>
SQL> drop table client;
Table dropped.
SQL>
SQL> drop table address_table;
Table dropped.
SQL>
SQL>
SQL>

</source>

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в 13:45, 26 мая 2010

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