meidu2021/daju/resources/mapper.daju/TBArchivesRoadMapper.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.daju.mix.dao.mapper.TBArchivesRoadMapper">

    <resultMap type="com.daju.mix.dao.entity.TBArchivesRoad" id="TBArchivesRoadMap"/>

    <!-- 随机一条数据-->
    <select id="selectRecent" resultMap="TBArchivesRoadMap">
        select *
        from t_b_archives_road
        order by rand()
        limit 1
    </select>

    <select id="selectId" resultType="String">
        SELECT id
        from t_b_archives_road
        where id = (select max(id) from t_b_archives_road)
    </select>

    <resultMap type="com.daju.mix.dto.AllElements" id="AllElements"/>
    <select id="allElementsByRoad" resultMap="AllElements">
        select tbars.code          id,
               center_longitude    longitude,
               center_latitude     latitude,
               tbca.status         warningState,
               tbca.content        warningMessage,
               8                   type,
               expected_completion time,
               max(tbca.create_date)
        from t_b_archives_road_section tbars
                 left join t_b_car_alarm tbca on tbars.code = tbca.archive_id
        group by tbars.id;
    </select>
</mapper>