mysql error

what did i do wrong right near the end? thanks

Error

SQL-query :

CREATE TABLE `visit` (
`visit_number` INT NOT NULL AUTO_INCREMENT,
`id` INT NOT NULL ,
`when` TIMESTAMP NOT NULL ,
`number_of_problems` TINYINT DEFAULT '1' NOT NULL ,
`weight` FLOAT,
`height` FLOAT,
`head_circ` FLOAT,
`temp` FLOAT,
`pulse` TINYINT UNSIGNED,
`resp_rate` TINYINT UNSIGNED,
`BPsystolic` TINYINT UNSIGNED NOT NULL ,
`BPdiastolic` TINYINT UNSIGNED,
`school_note` VARCHAR,
`other_notes` VARCHAR,
PRIMARY KEY ( `visit_number` ) ,
INDEX ( `id` )
)

MySQL said:

You have an error in your SQL syntax near ' `other_notes` VARCHAR, PRIMARY KEY (`visit_number`), INDEX (`id`))' at line 1

I think you maybe need to give your index a name. Try changing your penultimate line to: