mysql>
mysql> CREATE TABLE IF NOT EXISTS cups
-> (
-> id INT AUTO_INCREMENT PRIMARY KEY,
-> cup_pattern VARCHAR(25)
-> );
Query OK, 0 rows affected (0.01 sec)
mysql>
mysql> # create a table called "saucers" with 2 columns
mysql> CREATE TABLE IF NOT EXISTS saucers
-> (
-> id INT AUTO_INCREMENT,
-> scr_pattern VARCHAR(25),
-> PRIMARY KEY(id)
-> );
Query OK, 0 rows affected (0.00 sec)
mysql>
mysql> # confirm the "cups" and "saucers" table format
mysql> EXPLAIN cups;
+-------------+-------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------------+-------------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| cup_pattern | varchar(25) | YES | | NULL | |
+-------------+-------------+------+-----+---------+----------------+
2 rows in set (0.00 sec)
mysql> EXPLAIN saucers;
+-------------+-------------+------+-----+---------+----------------+
| Field | Type | Null | Key | Default | Extra |
+-------------+-------------+------+-----+---------+----------------+
| id | int(11) | NO | PRI | NULL | auto_increment |
| scr_pattern | varchar(25) | YES | | NULL | |
+-------------+-------------+------+-----+---------+----------------+
2 rows in set (0.00 sec)
mysql>
mysql> # delete these sample tables
mysql> DROP TABLE cups, saucers;
Query OK, 0 rows affected (0.00 sec)