SHOW CREATE TABLE steps:

Create Table: CREATE TABLE `steps` (
  `id` int(11) NOT NULL AUTO_INCREMENT,
  `test_case_id` int(11) NOT NULL,
  `label_id` int(11) NOT NULL,
  `label_parameters_yaml` longtext NOT NULL,
  `physical_label` longblob DEFAULT NULL,
  `timestamp` decimal(19,9) NOT NULL,
  `notes` text DEFAULT NULL,
  `step_number` int(11) DEFAULT NULL,
  `pa_timestamp` decimal(19,9) DEFAULT NULL,
  `state_vector_size` int(11) DEFAULT NULL,
  `advance_duration_ms` int(11) DEFAULT NULL,
  `adapter_drift_ms` int(11) DEFAULT NULL,
  `transition_coverage` text DEFAULT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `index_steps_on_test_case_id_and_step_number` (`test_case_id`,`step_number`),
  KEY `index_steps_on_test_case_id_and_timestamp` (`test_case_id`,`timestamp`),
  KEY `index_steps_on_test_case_id_and_state_vector_size` (`test_case_id`,`state_vector_size`),
  KEY `index_steps_on_test_case_id_and_advance_duration_ms` (`test_case_id`,`advance_duration_ms`)
) ENGINE=InnoDB AUTO_INCREMENT=31511935 DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci ROW_FORMAT=COMPRESSED KEY_BLOCK_SIZE=4