в 13:45, 26 мая 2010

2010-05-26T13:45:46Z

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2010-05-26T10:08:59Z

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== REF operator==



<source lang="sql">
SQL>
SQL>
SQL>
SQL> CREATE OR REPLACE TYPE address AS OBJECT
2 (line1 VARCHAR2(20),
3 line2 VARCHAR2(20),
4 city VARCHAR2(20),
5 state_code VARCHAR2(2),
6 zip VARCHAR2(13),
7 MEMBER FUNCTION get_address RETURN VARCHAR2,
8 MEMBER PROCEDURE set_address
9 (addressLine1 VARCHAR2,
10 addressLine2 VARCHAR2,
11 address_city VARCHAR2,
12 address_state VARCHAR2,
13 address_zip VARCHAR2)
14 );
15 /
Type created.
SQL> CREATE OR REPLACE TYPE BODY address AS
2 MEMBER FUNCTION get_address RETURN VARCHAR2
3 IS
4 BEGIN
5 RETURN (SELF.line1||" "||SELF.line2||" "||SELF.city||", "|| SELF.state_code||" "||SELF.zip);
6 END get_address;
7 MEMBER PROCEDURE set_address (addressLine1 VARCHAR2,
8 addressLine2 VARCHAR2,
9 address_city VARCHAR2,
10 address_state VARCHAR2,
11 address_zip VARCHAR2)
12 IS
13 BEGIN
14 line1 :=addressLine1;
15 line2 :=addressLine2;
16 city :=address_city;
17 state_code :=address_state;
18 zip :=address_zip;
19 END set_address;
20 END;
21 /
Type body created.
SQL>
SQL> CREATE TABLE address_master OF address;
Table created.
SQL>
SQL> INSERT INTO address_master VALUES (address("19 J","Reading Rd","Vancouver","NJ","00000"));
1 row created.
SQL>
SQL> select * from address_master;
LINE1 LINE2 CITY ST
-------------------- -------------------- -------------------- --
ZIP
-------------
19 J Reading Rd Vancouver NJ
00000

1 row selected.
SQL>
SQL> DECLARE
2 addressValue_ref REF address;
3 BEGIN
4 SELECT REF(a) INTO addressValue_ref FROM address_master a WHERE a.city ="Vancouver";
5 END;
6 /
PL/SQL procedure successfully completed.
SQL>
SQL>
SQL> DECLARE
2 addressValue_ref REF address;
3 v_zip VARCHAR2(30);
4 BEGIN
5 SELECT REF(a), a.zip INTO addressValue_ref,v_zip FROM address_master a WHERE a.city ="Vancouver";
6 END;
7 /
PL/SQL procedure successfully completed.
SQL>
SQL> drop table address_master;
Table dropped.
SQL></source>

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в 13:45, 26 мая 2010

Admin: 1 версия