snd-escloud/target/classes/mapper/build/WaterReadDao.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="platform.modules.build.dao.WaterReadDao">


    <select id="getWaterReadLast" resultType="platform.modules.build.entity.WaterRead">
        select * from y_water_read where water_id=#{water_id} order by record_id desc limit 0,1
    </select>
</mapper>