syntax error on varbinary(-1)

I am receiving a syntax error:

MySQL said: Documentation #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 '-1) NULL, PRIMARY KEY (diagram_id), UNIQUE INDEX UK_principal_name (p' at line 6

This is what i am trying to run. i have looked t开发者_如何转开发hat the lines it is telling me is incorrect and i have yet to find the correct syntax to use. any help would be appreciated.

    DROP TABLE IF EXISTS `teamfocus_dbo`.`sysdiagrams`;
CREATE TABLE `teamfocus_dbo`.`sysdiagrams` (
  `name` VARCHAR(128) CHARACTER SET utf8 COLLATE utf8_general_ci NOT NULL,
  `principal_id` INT(10) NOT NULL,
  `diagram_id` INT(10) NOT NULL AUTO_INCREMENT,
  `version` INT(10) NULL,
  `definition` VARBINARY(-1) NULL,
  PRIMARY KEY (`diagram_id`),
  UNIQUE INDEX `UK_principal_name` (`principal_id`, `name`)
)
ENGINE = INNODB;

Try changing the VARBINARY(-1) to a positive length, like VARBINARY(1)

Pretty sure you can't have negative length columns... change VARBINARY(-1) to a positive length.

Maybe you're meaning to set the default value to -1?

`definition` VARBINARY(1) NULL DEFAULT -1