ALTER TABLE users_groups ADD column `isRole` char(1) DEFAULT 'n';
CREATE TABLE `tiki_categories_roles` (
    `categId` int(12) NOT NULL,
    `categRoleId` int(12) NOT NULL,
    `groupRoleId` int(12) NOT NULL,
    `groupId` int(12) NOT NULL,
    PRIMARY KEY (`categId`,`categRoleId`,`groupRoleId`)
) ENGINE=MyISAM;