Where is the error in my SQL query?

Question

My SQL query is

ALTER TABLE `USERS` MODIFY `UUID` SERIAL UNSIGNED NOT NULL AUTO_INCREMENT

but I keep on getting

#1064 - You have an error in your SQL syntax; check the manual that corresponds to
your MySQL server version for the right syntax to use near 'UNSIGNED NOT
NULL AUTO_INCREMENT' at line 1

from MySQL (version 5.1). :-(

Any pointers?

Answer 1

From MySQL Doc:

SERIAL is an alias for BIGINT UNSIGNED NOT NULL AUTO_INCREMENT UNIQUE.

That's why you don't have to add more attributes to it...