Mega Code Archive
Top N analysis
<![CDATA[
SQL>
SQL> CREATE TABLE product (
2 product_name VARCHAR2(25) PRIMARY KEY,
3 product_price NUMBER(4,2),
4 quantity_on_hand NUMBER(5,0),
5 last_stock_date DATE
6 );
Table created.
SQL>
SQL> INSERT INTO product VALUES ('Product 1', 99, 1, '15-JAN-03');
1 row created.
SQL> INSERT INTO product VALUES ('Product 2', 75, 1000, '15-JAN-02');
1 row created.
SQL> INSERT INTO product VALUES ('Product 3', 50, 100, '15-JAN-03');
1 row created.
SQL> INSERT INTO product VALUES ('Product 4', 25, 10000, null);
1 row created.
SQL> INSERT INTO product VALUES ('Product 5', 9.95,1234, '15-JAN-04');
1 row created.
SQL> INSERT INTO product VALUES ('Product 6', 45, 1, TO_DATE('December 31, 2008, 11:30 P.M.','Month dd, YYYY, HH:MI P.M.'));
1 row created.
SQL>
SQL> CREATE OR REPLACE VIEW overstocked_items AS
2 SELECT product_name, quantity_on_hand
3 FROM product
4 WHERE rownum <= 3
5 ORDER BY quantity_on_hand;
View created.
SQL>
SQL> SELECT * FROM overstocked_items;
PRODUCT_NAME QUANTITY_ON_HAND
------------------------- ----------------
Product 1 1
Product 3 100
Product 2 1000
SQL>
SQL> drop table product;
Table dropped.
SQL>
SQL> drop view overstocked_items;
View dropped.
SQL>
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