DELETE FROM "iot_scene_rule";
DELETE FROM "iot_product";
DELETE FROM "iot_device";
DELETE FROM "iot_thing_model";
DELETE FROM "iot_device_data";
DELETE FROM "iot_alert_config";
DELETE FROM "iot_alert_record";
DELETE FROM "iot_ota_firmware";
DELETE FROM "iot_ota_task";
DELETE FROM "iot_ota_record";
DELETE FROM "iot_data_rule";