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Categories / Oracle PLSQL Tutorial / Large Objects
 

REF operator

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> 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>