Select Query Oracle PLSQL

SQL>
SQL> CREATE TABLE product (
  2       product_name     VARCHAR2(25),
  3       product_price    NUMBER(4,2),
  4       quantity_on_hand NUMBER(5,0),
  5       last_stock_date  DATE);
Table created.
SQL>
SQL> INSERT INTO product VALUES ('Small Widget', 99, 1,    '15-JAN-03');
1 row created.
SQL> INSERT INTO product VALUES ('Wodget',       75, 1000, '15-JAN-02');
1 row created.
SQL> INSERT INTO product VALUES ('Product 1',    50, 100,  '15-JAN-03');
1 row created.
SQL> INSERT INTO product VALUES ('Product 2',    25, 10000, null);
1 row created.
SQL>
SQL>
SQL>
SQL> SELECT * FROM product WHERE  quantity_on_hand = 1;
PRODUCT_NAME              PRODUCT_PRICE QUANTITY_ON_HAND LAST_STOC
------------------------- ------------- ---------------- ---------
Small Widget                         99                1 15-JAN-03
1 row selected.
SQL>
SQL> SELECT * FROM product WHERE  quantity_on_hand < 500;
PRODUCT_NAME              PRODUCT_PRICE QUANTITY_ON_HAND LAST_STOC
------------------------- ------------- ---------------- ---------
Small Widget                         99                1 15-JAN-03
Product 1                            50              100 15-JAN-03
2 rows selected.
SQL>
SQL> SELECT * FROM product WHERE  quantity_on_hand < 1000;
PRODUCT_NAME              PRODUCT_PRICE QUANTITY_ON_HAND LAST_STOC
------------------------- ------------- ---------------- ---------
Small Widget                         99                1 15-JAN-03
Product 1                            50              100 15-JAN-03
2 rows selected.
SQL>
SQL> SELECT * FROM product WHERE  quantity_on_hand <= 1000;
PRODUCT_NAME              PRODUCT_PRICE QUANTITY_ON_HAND LAST_STOC
------------------------- ------------- ---------------- ---------
Small Widget                         99                1 15-JAN-03
Wodget                               75             1000 15-JAN-02
Product 1                            50              100 15-JAN-03
3 rows selected.
SQL>
SQL> SELECT * FROM product WHERE  quantity_on_hand > 1000;
PRODUCT_NAME              PRODUCT_PRICE QUANTITY_ON_HAND LAST_STOC
------------------------- ------------- ---------------- ---------
Product 2                            25            10000
1 row selected.
SQL>
SQL> SELECT * FROM product WHERE  quantity_on_hand >= 1000;
PRODUCT_NAME              PRODUCT_PRICE QUANTITY_ON_HAND LAST_STOC
------------------------- ------------- ---------------- ---------
Wodget                               75             1000 15-JAN-02
Product 2                            25            10000
2 rows selected.
SQL>
SQL> SELECT * FROM product WHERE  quantity_on_hand > 1000;
PRODUCT_NAME              PRODUCT_PRICE QUANTITY_ON_HAND LAST_STOC
------------------------- ------------- ---------------- ---------
Product 2                            25            10000
1 row selected.
SQL>
SQL> SELECT * FROM product WHERE  quantity_on_hand >= 1000;
PRODUCT_NAME              PRODUCT_PRICE QUANTITY_ON_HAND LAST_STOC
------------------------- ------------- ---------------- ---------
Wodget                               75             1000 15-JAN-02
Product 2                            25            10000
2 rows selected.
SQL>
SQL> SELECT * FROM product WHERE  product_price IN (50, 99);
PRODUCT_NAME              PRODUCT_PRICE QUANTITY_ON_HAND LAST_STOC
------------------------- ------------- ---------------- ---------
Small Widget                         99                1 15-JAN-03
Product 1                            50              100 15-JAN-03
2 rows selected.
SQL>
SQL>
SQL> SELECT * FROM product ORDER BY product_price;
PRODUCT_NAME              PRODUCT_PRICE QUANTITY_ON_HAND LAST_STOC
------------------------- ------------- ---------------- ---------
Product 2                            25            10000
Product 1                            50              100 15-JAN-03
Wodget                               75             1000 15-JAN-02
Small Widget                         99                1 15-JAN-03
4 rows selected.
SQL>
SQL>
SQL> DROP TABLE product;
Table dropped.
SQL>
SQL>
SQL>