`task` enum('sign','revoke') NOT NULL,
`state` enum('open', 'done', 'error') NOT NULL DEFAULT 'open',
`warning` int(2) NOT NULL DEFAULT '0',
+ `executeFrom` DATE,
+ `executeTo` VARCHAR(11),
PRIMARY KEY (`id`),
KEY `state` (`state`)
) ENGINE=InnoDB AUTO_INCREMENT=0 DEFAULT CHARSET=latin1;