text: CREATE TABLE `stmath_usage` (
    `id` int(11) unsigned NOT NULL AUTO_INCREMENT,
    `import_filename` varchar(256) DEFAULT NULL,
    `imported_at` datetime DEFAULT NULL,
    `student_id` int(11) DEFAULT NULL,
  
    `scd` varchar(256) DEFAULT NULL,
    `first_name` varchar(256) DEFAULT NULL,
    `last_name` varchar(256) DEFAULT NULL,
    `avg_time_week` varchar(256) DEFAULT NULL,
    `avg_progress_week` varchar(256) DEFAULT NULL,
    `total_time` varchar(256) DEFAULT NULL,
    `syllabus_progress` varchar(256) DEFAULT NULL,
    `first_login` varchar(256) DEFAULT NULL,
  
    `created_at` datetime NOT NULL,
    `updated_at` datetime DEFAULT NULL,
    PRIMARY KEY (`id`),
    KEY `student_id` (`student_id`)
  ) ENGINE=InnoDB DEFAULT CHARSET=utf8;