mybatis mapper把传递来的参数当作字段写入结果集中

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

    <result column="Station_Id" jdbcType="VARCHAR" property="StationID" />

    <result column="Station_Electricity" jdbcType="DOUBLE" property="StationElectricity" />

    <result column="StartTime"  property="StartTime" />

    <result column="EndTime" property="EndTime" />

    <collection property="EquipmentStatsInfos" javaType="ArrayList"  select="com.extracme.evshare.business.tserver.mapper.EquipmentStatsMapper.queryEquipmentStatsInfoByStatsId"

                column="{StationStatsId=stationStatsId,EndTime=EndTime,StartTime=StartTime}" ofType="com.extracme.evshare.business.entity.EquipmentStatsInfo">

     </collection>

   

  </resultMap>

-------------mapper把传递来的参数当作字段写入结果集中----------

 <select id="queryStationStats" parameterType="java.util.Map" resultMap="StatsResultMap">

   

    select

     # {startTime,jdbcType=VARCHAR} as StartTime,

     # {endTime,jdbcType=VARCHAR} as EndTime,

     Station_Stats_Id stationStatsId ,

     Station_Id

    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 UNIX_TIMESTAMP(Start_Time) >= UNIX_TIMESTAMP(#{startTime,jdbcType=VARCHAR})

   </if>

   <if test="endTime != null and endTime !='' ">

     and UNIX_TIMESTAMP(End_Time) <= UNIX_TIMESTAMP(#{endTime,jdbcType=CARCHAR}) 

   </if>

    <!--  GROUP BY stationStatsId WITH ROLLUP -->

  </select>

ps：求站的总电量，站下各个设备的总量以及设备下各个接口的总量；一个站在每天会insert一条记录：时间段内query如下

SELECT

 s.Station_Stats_Id,

  c.Connector_Stats_Id,e.Equipment_Stats_Id,

  s.Station_Id,s.Station_Electricity,

  e.Equipment_Id,e.Equipment_Electricity,

  c.Connector_Id,c.Connector_Electricity

FROM

  station_stats s

inner JOIN equipment_stats e ON s.Station_Stats_Id = e.Station_Stats_Id

inner JOIN connector_stats c ON e.Equipment_Stats_Id = c.Equipment_Stats_Id

where s.Station_Id=720 #and s.Start_Time>'2017-07-15 00:00:00' and s.End_Time<'2017-07-18 00:00:00'

AND UNIX_TIMESTAMP(s.Start_Time) >= UNIX_TIMESTAMP('2017-07-15')

    AND UNIX_TIMESTAMP(s.End_Time) <= UNIX_TIMESTAMP('2017-07-18')

GROUP BY s.Station_Stats_Id,s.Station_Id,e.Equipment_Id,c.Connector_Id

最终优化之后数据结构：

SELECT

  s.Station_Id,

  #s.Station_Electricity,

  e.Equipment_Id,

  #e.Equipment_Electricity,

  c.Connector_Id,

  SUM(s.Station_Electricity) Station_Electricity,

  SUM(e.Equipment_Electricity) Equipment_Electricity,

  SUM(c.Connector_Electricity) Connector_Electricity

FROM

  station_stats s

inner JOIN equipment_stats e ON s.Station_Stats_Id = e.Station_Stats_Id

inner JOIN connector_stats c ON e.Equipment_Stats_Id = c.Equipment_Stats_Id

where s.Station_Id=720 #and s.Start_Time>'2017-07-15 00:00:00' and s.End_Time<'2017-07-18 00:00:00'

AND UNIX_TIMESTAMP(s.Start_Time) > UNIX_TIMESTAMP('2017-07-15')

    AND UNIX_TIMESTAMP(s.End_Time) < UNIX_TIMESTAMP('2017-07-18')

GROUP BY s.Station_Id,e.Equipment_Id,c.Connector_Id