parking-server/src/main/resources/mapper/OrderMapper.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.qmrb.system.mapper.OrderMapper">

    <select id="getPageByUserId" parameterType="com.qmrb.system.pojo.query.PayOrderQuery"
            resultType="com.qmrb.system.pojo.vo.PayOrderVO">
        select
            po.*,
            br.car_park_id,
            br.car_number,
            br.in_time
        from pay_order po
        INNER JOIN barn_record br on po.good_id = br.id
        where br.car_number = (select plate_number
                               from my_car_plate_number
                               where user_id = #{queryParams.userId}
                               order by create_time desc limit 1
            )
    </select>
</mapper>