forse così è meglio... chiedo venia regà...
CREATE TABLE IF NOT EXISTS `asp_assets` (
`id` int(10) unsigned NOT NULL AUTO_INCREMENT COMMENT 'Primary Key',
`parent_id` int(11) NOT NULL DEFAULT '0' COMMENT 'Nested set parent.',
`lft` int(11) NOT NULL DEFAULT '0' COMMENT 'Nested set lft.',
`rgt` int(11) NOT NULL DEFAULT '0' COMMENT 'Nested set rgt.',
`level` int(10) unsigned NOT NULL COMMENT 'The cached level in the nested tree.',
`name` varchar(50) NOT NULL COMMENT 'The unique name for the asset.\n',
`title` varchar(100) NOT NULL COMMENT 'The descriptive title for the asset.',
`rules` varchar(5120) NOT NULL COMMENT 'JSON encoded access control.',
PRIMARY KEY (`id`),
UNIQUE KEY `idx_asset_name` (`name`),
KEY `idx_lft_rgt` (`lft`,`rgt`),
KEY `idx_parent_id` (`parent_id`)
) TYPE=InnoDB AUTO_INCREMENT=70