需求：查詢時需要對比stationStatsInfo 充電裝置，介面資訊的基本資訊的最後修改時間，三者只要有一處修改，就認為是最新修改時間，然後與輸入引數lastQueryTime進行對比，最後符合條件的站資訊資料全部顯示。

sql：比較lastQueryTime   PK  updateTime

 <select id="query_Stations_info" parameterType="java.util.Map" resultMap="StationInfoMap" > 
 SELECT a.GRID_STATION_SEQ,a.GRID_STATION_NAME,a.AREACODE,a.ADDRESS,a.CONTACT_MOBILE,a.station_type,
FROM
${projectSchema}.grid_station a where UNIX_TIMESTAMP(a.UPDATED_TIME)>UNIX_TIMESTAMP(#{LastQueryTime,jdbcType=VARCHAR}) 

or ( EXISTS  ( select 1 from ${projectSchema}.carport_info b LEFT JOIN ${projectSchema}.grid_stake c ON b.GRID_STAKE_SEQ = c.GRID_STAKE_SEQ  where b.GRID_STATION_SEQ = a.GRID_STATION_SEQ and (UNIX_TIMESTAMP(b.UPDATED_TIME)>UNIX_TIMESTAMP(#{LastQueryTime,jdbcType=VARCHAR}) orUNIX_TIMESTAMP(c.UPDATED_TIME)>UNIX_TIMESTAMP(#{LastQueryTime,jdbcType=VARCHAR})) )  )ORDER BY a.GRID_STATION_SEQ 

javaBean-------------------------------------------------------------

第一級：stationStatsInfo.java

第二級：EquipementStatsInfo.java

第三極：ConnectStatsInfo.java

mapper=-------------------------------------------------------------

   <resultMap id="StatsResultMap" type="com.extracme.evshare.business.tfriftbean.StationStatsInfo">

    <result column="Station_Id" jdbcType="VARCHAR" property="StationID" />
    <result column="Station_Electricity" jdbcType="DOUBLE" property="StationElectricity" />
    <result column="Start_Time" jdbcType="TIMESTAMP" property="StartTime" />
    <result column="End_Time" jdbcType="TIMESTAMP" property="EndTime" />
<collection property="EquipmentStatsInfos" javaType="ArrayList"  select="com.extracme.evshare.business.tserver.mapper.EquipmentStatsMapper.queryEquipmentStatsInfoByStatsId"
                column="{StationStatsId=stationStatsId}" ofType="com.extracme.evshare.business.entity.EquipmentStatsInfo">
     </collection>
  </resultMap>
      <!-- 此查詢用於定期獲取充電站，在某個週期內的統計資訊 -->
  <select id="queryStationStats" parameterType="java.util.Map" resultMap="StatsResultMap">

    select 
Station_Stats_Id stationStatsId ,Station_Id, Station_Electricity, Start_Time, End_Time
    from station_stats
    where 1=1 
     <if test="stationId != null and stationId !='' " >
and Station_Id = #{stationId,jdbcType=VARCHAR}
     </if>
     <if test="startTime != null and startTime !='' " >
and Start_Time = #{startTime,jdbcType=TIMESTAMP}
     </if>
     <if test="endTime != null and endTime !='' " >
and End_Time = #{endTime,jdbcType=TIMESTAMP}
     </if>
     ORDER BY End_Time 
  </select>

   <resultMap id="EquipmentResultMap" type="com.extracme.evshare.business.tfriftbean.EquipmentStatsInfo">
   <!--  <id column="Equipment_Stats_Id" jdbcType="BIGINT" property="EquipmentStatsId" /> -->
    <result column="Equipment_Id" jdbcType="VARCHAR" property="EquipmentID" />
    <result column="Equipment_Electricity" jdbcType="DOUBLE" property="EquipmentElectricity" />
    <!-- <collection property="ConnectorStatsInfos" resultMap="ConnectorResultMap" /> -->
     <collection property="ConnectorStatsInfos" javaType="ArrayList"  select="com.extracme.evshare.business.tserver.mapper.ConnectorStatsMapper.queryStatsInfoById"
                column="{EquipmentStatsId=equipmentStatsId}" ofType="com.extracme.evshare.business.tfriftbean.ConnectorStatsInfo">
     </collection>
  </resultMap>
    <!-- 此查詢用於定期獲取充電站下，在某個週期內的裝置介面統計資訊 -->
     <select id="queryEquipmentStatsInfoByStatsId" parameterType="java.util.Map" resultMap="EquipmentResultMap">
    select 
e.Equipment_Stats_Id as equipmentStatsId,
   e.Equipment_Id EquipmentID,
   e.Equipment_Electricity
   <!-- ,c.Connector_Id  ConnectorID,
   c.Connector_Electricity -->
    from 
equipment_stats e
  <!-- LEFT JOIN connector_stats c ON e.Equipment_Stats_Id = c.Equipment_Stats_Id -->
    where e.Station_Stats_Id = #{StationStatsId,jdbcType=INTEGER}
  </select>

---------------------分級依次查詢List--------------------------