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mysql>
mysql>
mysql>
mysql> CREATE TABLE Publishers
-> (
-> PubID SMALLINT NOT NULL DEFAULT 1
-> )
-> ENGINE=INNODB;
Query OK, 0 rows affected (0.05 sec)
mysql>
mysql>
mysql> CREATE TABLE Books
-> (
-> BookID SMALLINT NOT NULL,
-> BookName VARCHAR(40) NOT NULL,
-> PubID SMALLINT NOT NULL DEFAULT 1
-> )
-> ENGINE=INNODB;
Query OK, 0 rows affected (0.05 sec)
mysql>
mysql>
mysql> ALTER TABLE Books
-> ADD PRIMARY KEY (BookID),
-> ADD CONSTRAINT fk_1 FOREIGN KEY (PubID) REFERENCES Publishers (PubID),
-> ADD COLUMN Format ENUM('paperback', 'hardcover') NOT NULL AFTER BookName;
mysql>
mysql> desc Books;
+----------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+----------+-------------+------+-----+---------+-------+
| BookID | smallint(6) | NO | | | |
| BookName | varchar(40) | NO | | | |
| PubID | smallint(6) | NO | | 1 | |
+----------+-------------+------+-----+---------+-------+
3 rows in set (0.00 sec)
mysql>
mysql> desc Publishers;
+-------+-------------+------+-----+---------+-------+
| Field | Type | Null | Key | Default | Extra |
+-------+-------------+------+-----+---------+-------+
| PubID | smallint(6) | NO | | 1 | |
+-------+-------------+------+-----+---------+-------+
1 row in set (0.02 sec)
mysql>
mysql> drop table Books;
Query OK, 0 rows affected (0.02 sec)
mysql>
mysql> drop table Publishers;
Query OK, 0 rows affected (0.05 sec)
mysql>
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