[电表][修复]:电表存储数据时的错误

mallinkService/src/main/resources/mapper/KwMeterDataMapper.xml

@@ -86,12 +86,8 @@
 			</if>
 			group by `meter_id`
 		) temp
-		where
-		create_time = temp.maxTime
-		<if test=" null != meterId ">
+		on create_time = temp.maxTime
 	  	and meter_id = temp.maxMeterId
-		</if>
-
 	</select>