Вывод большего объема данных

CREATE TABLE `tabl_1` (
  `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
  `category` VARCHAR(100) NOT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8 comment='category';
 
CREATE TABLE `pages` (
  `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
  `tabl_1_id` INT(10) UNSIGNED NOT NULL,  
 `page_num` INT(10) UNSIGNED NOT NULL,
  PRIMARY KEY (`id`),
  CONSTRAINT `tabl_1_1Fk` FOREIGN KEY (`tabl_1_id`) 
  REFERENCES `tabl_1` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB DEFAULT CHARSET=utf8 comment='group phones by pages';
 
CREATE TABLE `tabl_2` (
  `id` INT(10) UNSIGNED NOT NULL AUTO_INCREMENT,
  `tabl_1_id` INT(10) UNSIGNED NOT NULL,  
  `page_id` INT(10) UNSIGNED DEFAULT NULL, /*разрешаем NULL чтобы не влиять 
  на те категории в которых не требуется  группировка по страницам */
  `phone` VARCHAR(20) NOT NULL,
  PRIMARY KEY (`id`),
  CONSTRAINT `tabl_1_2Fk` FOREIGN KEY (`tabl_1_id`) 
  REFERENCES `tabl_1` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION,
  CONSTRAINT `pagesFk` FOREIGN KEY (`page_id`) 
  REFERENCES `pages` (`id`) ON DELETE NO ACTION ON UPDATE NO ACTION
) ENGINE=InnoDB DEFAULT CHARSET=utf8 comment='phones';