iotc/ruoyi-system/src/main/resources/mapper/data/TblRecordMapper.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="com.ruoyi.data.mapper.TblRecordMapper">

    <resultMap type="com.ruoyi.data.domain.TblRecord" id="TblRecordResult">
        <result property="id" column="id"/>
        <result property="json" column="json"/>
        <result property="createTime" column="create_time"/>
        <result property="createdBy" column="created_by"/>
        <result property="updateTime" column="update_time"/>
        <result property="updateBy" column="update_by"/>
        <result property="equipmentId" column="equipment_id"/>
    </resultMap>

    <select id="getNewRecord" resultMap="TblRecordResult">
        SELECT
            any_value(id) as id,
            any_value(json) as json,
            sensor_id,
            max( create_time )
        FROM
            tbl_record
        GROUP BY
            sensor_id;
    </select>


</mapper>