BatchExamMapper.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.meishu.mapper.BatchExamMapper">

     <select id="exams" parameterType="long" resultType="com.meishu.vo.exam.ExamsVO">
        SELECT
            t.id,
            t.exam_name,
            t.start_date,
            t.end_date,
            t.paper_id,
            t2.paper_name
        FROM
            batch_exam t
            LEFT JOIN paper_dict t2 ON t.paper_id = t2.id
        WHERE
            t.delete_date IS NULL
            AND t2.delete_date IS NULL
            AND t.batch_id = #{batchId}
    </select>
</mapper>