因子单位显示null修改

ZhuDongming

2019-12-09 bc6a7cf68da9eaf2ba53d23d83d4d73ec76a7b86

 src/main/resources/mapper/DeviceMapper.xml

@@ -414,4 +414,8 @@
         </if>
      )
   </select>
	
   <select id="getLimitDataByDevice" resultType="String">
      SELECT limit_val FROM view_device_density WHERE mac = #{mac}
   </select>
</mapper>