An example of cursorValue cursor using %ISOPEN : Cursor Attributes « Cursor « Oracle PL/SQL Tutorial

1. Oracle PL/SQL Tutorial
2. Cursor
3. Cursor Attributes

SQL>
SQL>
SQL> create table product(
  2     product_id number(4)     not null,
  3     product_description varchar2(20) not null
  4  );

Table created.

SQL>
SQL> insert into product values (1,'Java');

1 row created.

SQL> insert into product values (2,'Oracle');

1 row created.

SQL> insert into product values (3,'C#');

1 row created.

SQL> insert into product values (4,'Javascript');

1 row created.

SQL> insert into product values (5,'Python');

1 row created.

SQL>
SQL>
SQL> create table company(
  2     product_id        number(4)    not null,
  3     company_id          NUMBER(8)    not null,
  4     company_short_name  varchar2(30) not null,
  5     company_long_name   varchar2(60)
  6  );

Table created.

SQL> insert into company values(1,1001,'A Inc.','Long Name A Inc.');

1 row created.

SQL> insert into company values(1,1002,'B Inc.','Long Name B Inc.');

1 row created.

SQL> insert into company values(1,1003,'C Inc.','Long Name C Inc.');

1 row created.

SQL> insert into company values(2,1004,'D Inc.','Long Name D Inc.');

1 row created.

SQL> insert into company values(2,1005,'E Inc.','Long Name E Inc.');

1 row created.

SQL> insert into company values(2,1006,'F Inc.','Long Name F Inc.');

1 row created.

SQL>
SQL>
SQL>
SQL>
SQL> DECLARE
  2    CURSOR cursorValue IS
  3      SELECT h.product_description,o.company_short_name
  4      FROM company o,product h
  5      WHERE o.product_id =h.product_id
  6      ORDER by 2;
  7    v_company_rec cursorValue%ROWTYPE;
  8  BEGIN
  9    IF (NOT cursorValue%ISOPEN) THEN
 10      OPEN cursorValue;
 11    END IF;
 12
 13    FETCH cursorValue INTO v_company_rec;
 14
 15    WHILE (cursorValue%FOUND)LOOP
 16      dbms_output.put_line(rpad(v_company_rec.product_description,20,' ')||' '||
 17      rpad(v_company_rec.company_short_name,30,' '));
 18      FETCH cursorValue INTO v_company_rec;
 19    END LOOP;
 20    IF (cursorValue%ISOPEN)THEN
 21      CLOSE cursorValue;
 22    END IF;
 23  END;
 24  /
Java                 A Inc.
Java                 B Inc.
Java                 C Inc.
Oracle               D Inc.
Oracle               E Inc.
Oracle               F Inc.

PL/SQL procedure successfully completed.

SQL>
SQL>
SQL> drop table product;

Table dropped.

SQL>
SQL> drop table company;

Table dropped.

SQL>