saas_entrepot/zhongzheng-system/src/main/resources/mapper/modules/top/TopQuestionMapper.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.zhongzheng.modules.top.goods.mapper.TopQuestionMapper">

    <select id="getBankGoodsExamList" parameterType="java.lang.Long" resultType="com.zhongzheng.modules.top.goods.vo.TopBankGoodsExamVo">
        SELECT
            ga.goods_id AS goodsId,
            qmc.module_exam_id AS moduleExamId,
            qce.chapter_exam_id AS chapterExamId,
            e.exam_id AS examId,
            e.exam_name AS examName,
            ep.paper_name AS paperName
        FROM
            top_goods_attached ga
                LEFT JOIN top_question_module_chapter qmc ON ga.major_id = qmc.module_exam_id
                LEFT JOIN top_question_chapter_exam qce ON qmc.chapter_exam_id = qce.chapter_exam_id
                LEFT JOIN top_exam e ON qce.exam_id = e.exam_id
                LEFT JOIN top_exam_paper ep ON e.exam_paper_id = ep.paper_id
        WHERE
            ga.goods_id = #{goodsId} AND ga.type = 1
        UNION ALL
        SELECT
            ga.goods_id AS goodsId,
            0 AS moduleExamId,
            qce.chapter_exam_id AS chapterExamId,
            e.exam_id AS examId,
            e.exam_name AS examName,
            ep.paper_name AS paperName
        FROM
            top_goods_attached ga
                LEFT JOIN top_question_chapter_exam qce ON ga.major_id = qce.chapter_exam_id
                LEFT JOIN top_exam e ON qce.exam_id = e.exam_id
                LEFT JOIN top_exam_paper ep ON e.exam_paper_id = ep.paper_id
        WHERE
            ga.goods_id = #{goodsId} AND ga.type = 2
        UNION ALL
        SELECT
            ga.goods_id AS goodsId,
            0 AS moduleExamId,
            0 AS chapterExamId,
            e.exam_id AS examId,
            e.exam_name AS examName,
            ep.paper_name AS paperName
        FROM
            top_goods_attached ga
                LEFT JOIN top_exam e ON ga.major_id = e.exam_id
                LEFT JOIN top_exam_paper ep ON e.exam_paper_id = ep.paper_id
        WHERE
            ga.goods_id = #{goodsId} AND ga.type = 3
    </select>

</mapper>