phpmyadmin and auto increment

[mrxxlphp]

When ever i try to add or update a colum to use auto increment using phpmyadmin im getting:

SQL-query :

ALTER TABLE enquirys CHANGE track track VARCHAR( 20 ) NOT NULL AUTO_INCREMENT

MySQL said:

#1063 - Incorrect column specifier for column 'track'

Thanks

Stuart

[bubblenut]

Just what do you excpect an auto incrementing varchar to do?
auto_increment works on integers.