REF CURSOR custom type : Reference Cursor « Cursor « Oracle PL / SQL

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Oracle PL / SQL » Cursor » Reference Cursor 
REF CURSOR custom type
  
SQL> CREATE TABLE book (
  2    isbn      CHAR(10PRIMARY KEY,
  3    category  VARCHAR2(20),
  4    title     VARCHAR2(100),
  5    num_pages NUMBER,
  6    price     NUMBER,
  7    copyright NUMBER(4),
  8    emp1   NUMBER,
  9    emp2   NUMBER,
 10    emp3   NUMBER
 11  );

Table created.

SQL>
SQL> INSERT INTO book (isbn, category, title, num_pages, price, copyright, emp1, emp2, emp3)
  2             VALUES ('1''Database', 'Oracle', 56339.992009123);

row created.

SQL> INSERT INTO book (isbn, category, title, num_pages, price, copyright, emp1, emp2)
  2             VALUES ('2''Database', 'MySQL', 76544.99200945);

row created.

SQL> INSERT INTO book (isbn, category, title, num_pages, price, copyright, emp1, emp2, emp3)
  2             VALUES ('3''Database', 'SQL Server', 40439.992001678);

row created.

SQL>
SQL>
SQL> SET SERVEROUTPUT ON ESCAPE OFF
SQL>
SQL> DECLARE
  2
  3     TYPE book_typ IS REF CURSOR RETURN book%ROWTYPE;
  4     cv_book book_typ;
  5     v_book book%ROWTYPE;
  6
  7  BEGIN
  8
  9     DBMS_OUTPUT.ENABLE(1000000);
 10
 11     OPEN cv_book FOR SELECT FROM book WHERE isbn = '1';
 12
 13     FETCH cv_book INTO v_book;
 14
 15     DBMS_OUTPUT.PUT_LINE(v_book.title||' i'||v_book.price);
 16
 17     CLOSE cv_book;
 18  END;
 19  /
Oracle is 39.99

PL/SQL procedure successfully completed.

SQL>
SQL> drop table book;

Table dropped.

   
    
  
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2. Defines and declares a reference cursor before explicitly opening it
3. Reference cursor demo
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6. refcursor variable
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