SQL> --
SQL>
SQL> CREATE TABLE product_order (
2 product_name VARCHAR2(25),
3 salesperson VARCHAR2(3),
4 order_date DATE,
5 quantity NUMBER(4,2)
6 );
Table created.
SQL>
SQL> CREATE TABLE person (
2 person_code VARCHAR2(3) PRIMARY KEY,
3 first_name VARCHAR2(15),
4 last_name VARCHAR2(20),
5 hire_date DATE
6 );
Table created.
SQL>
SQL> INSERT INTO person VALUES ('CA', 'Chase', 'At', '01-FEB-02');
1 row created.
SQL> INSERT INTO person VALUES ('GA', 'Gary', 'Talor', '15-FEB-02');
1 row created.
SQL> INSERT INTO person VALUES ('BB', 'Bob', 'Bark', '28-FEB-02');
1 row created.
SQL> INSERT INTO person VALUES ('LB', 'Laren', 'Baby', '01-MAR-02');
1 row created.
SQL> INSERT INTO person VALUES ('LN', 'Linda', 'Norman','01-JUN-03');
1 row created.
SQL>
SQL> INSERT INTO product_order VALUES ('Product 1', 'CA', '14-JUL-03', 1);
1 row created.
SQL> INSERT INTO product_order VALUES ('Product 2', 'BB', '14-JUL-03', 75);
1 row created.
SQL> INSERT INTO product_order VALUES ('Product 3', 'GA', '14-JUL-03', 2);
1 row created.
SQL> INSERT INTO product_order VALUES ('Product 4', 'GA', '15-JUL-03', 8);
1 row created.
SQL> INSERT INTO product_order VALUES ('Product 5', 'LB', '15-JUL-03', 20);
1 row created.
SQL> INSERT INTO product_order VALUES ('Product 6', 'CA', '16-JUL-03', 5);
1 row created.
SQL> INSERT INTO product_order VALUES ('Product 7', 'CA', '17-JUL-03', 1);
1 row created.
SQL>
SQL> SELECT * FROM product_order
2 WHERE salesperson = (
3 SELECT person_code
4 FROM person
5 WHERE first_name = 'Gary' AND last_name = 'Anderson'
6 );
no rows selected
SQL>
SQL> drop table product_order;
Table dropped.
SQL> drop table person;
Table dropped.