LISTING 1: Script to Create and Populate the Sales Table
CREATE TABLE Sales
(  smonth CHAR(6) NOT NULL PRIMARY KEY,
  qty    INT     NOT NULL)

SET NOCOUNT ON

INSERT INTO Sales VALUES('199912', 100)
INSERT INTO Sales VALUES('200001', 110)
INSERT INTO Sales VALUES('200002', 120)
INSERT INTO Sales VALUES('200003', 130)
INSERT INTO Sales VALUES('200004', 140)
INSERT INTO Sales VALUES('200005', 140)
INSERT INTO Sales VALUES('200006', 130)
INSERT INTO Sales VALUES('200007', 120)
INSERT INTO Sales VALUES('200008', 110)
INSERT INTO Sales VALUES('200009', 100)
INSERT INTO Sales VALUES('200010', 110)
INSERT INTO Sales VALUES('200011', 100)
INSERT INTO Sales VALUES('200012', 120)
INSERT INTO Sales VALUES('200101', 130)
INSERT INTO Sales VALUES('200102', 140)
INSERT INTO Sales VALUES('200103', 100)
INSERT INTO Sales VALUES('200104', 100)
INSERT INTO Sales VALUES('200105', 100)
INSERT INTO Sales VALUES('200106', 110)
INSERT INTO Sales VALUES('200107', 120)
INSERT INTO Sales VALUES('200108', 110)
INSERT INTO Sales VALUES('200109', 120)
INSERT INTO Sales VALUES('200110', 130)
INSERT INTO Sales VALUES('200111', 140)
INSERT INTO Sales VALUES('200112', 100)