批量更新，提升性能

沈斌

2017-10-27 052c104cbc2ccc13d83cd912e3b2bbf12c0d56bc

 src/main/resources/mapper/HistoryEntityMapper.xml

@@ -227,7 +227,7 @@
  </update>

  <select id="getMonthAverageBySensor" resultType="map">

      SELECT

         AVG(mac_value) monthAverage

         AVG(mac_value) average

      FROM

         history

      WHERE

@@ -288,4 +288,25 @@
      GROUP BY

         mac_key

   </select>



   <select id="getEquipmentStates" resultType="map">

      SELECT

         COUNT(state) count,

         state

      FROM

         equipment

      <if test="orgIds != null and orgIds.size > 0">

         JOIN org_equ oe ON e.id = oe.equid

         AND oe.orgid IN

         <foreach collection="orgIds" item="listItem" open="(" separator="," close=")" >

            #{listItem}

         </foreach>

      </if>

      GROUP BY

         state

   </select>



   <select id="getMacLogByLast" resultType="string">

      SELECT mac_log FROM logger ORDER BY time DESC LIMIT 1

   </select>

</mapper>