If you were creating a primary key on more than one column, you would include both of those column names in th : Primary Key « Key « SQL / MySQL






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If you were creating a primary key on more than one column, you would include both of those column names in th

     
e parentheses
mysql>
mysql> CREATE TABLE Orders
    -> (
    ->     OrderID SMALLINT UNSIGNED NOT NULL,
    ->     ModelID SMALLINT UNSIGNED NOT NULL,
    ->     ModelDescrip VARCHAR(40),
    ->     PRIMARY KEY (OrderID, ModelID)
    -> );
Query OK, 0 rows affected (0.00 sec)

mysql>
mysql> drop table Orders;
Query OK, 0 rows affected (0.00 sec)








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