use scan_db;
CREATE INDEX `exam_student_subject` ON sc_student (`exam_id`, `student_code`, `subject_code`);

INSERT INTO `sc_system_config` (`id`, `create_time`, `update_time`, `creator_id`, `updater_id`, `scanner_enable_login`,
                                `scanner_password`, `system_mode`, `client_version`, `client_uri`, `client_md5`,
                                `client_update_time`)
VALUES (1, NULL, NULL, NULL, NULL, 1, NULL, 'MARKING_CLOUD', NULL, NULL, NULL, NULL);