meidu2021/daju/target/classes/mapper/car/TBGarbageWeightMapper.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.TBGarbageWeightMapper">

<select id="getPlateAndAreaRegion" resultType="java.lang.String">
    SELECT TBC.plate,TBWR.area_region
    FROM t_b_work_route TBWR
                 LEFT JOIN t_b_car_schedule TBS ON TBS.work_route = TBWR.ID
                 LEFT JOIN t_b_car_schedule_task_arrange TBCSTA ON TBCSTA.schedule_id = TBS.ID
                 LEFT JOIN t_b_car TBC ON TBCSTA.car_id = TBC.id
    WHERE TBC.plate IS NOT NULL
    GROUP BY TBC.plate,TBWR.area_region
</select>

</mapper>