select firmware_id, firmware_name, product_id, product_name, tenant_id, tenant_name, is_sys,is_latest, version, file_path, create_time, update_time, remark from iot_firmware select f.firmware_id, f.firmware_name, f.product_id, f.product_name, f.tenant_id, f.tenant_name, f.is_sys,f.is_latest, f.version, f.file_path, f.create_time, f.remark from iot_device d left join iot_firmware f on d.product_id = f.product_id where d.device_id=#{deviceId} and f.is_latest=1 order by f.create_time desc limit 1 del_flag = '0' and tenant_id = #{tenantId} and product_id = #{productId} and version < #{version} order by create_time desc