saas_file_manager/zhongzheng-system/src/main/resources/mapper/modules/course/CourseSectionMapper.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.course.mapper.CourseSectionMapper">

    <resultMap type="com.zhongzheng.modules.course.domain.CourseSection" id="CourseSectionResult">
        <result property="sectionId" column="section_id"/>
        <result property="name" column="name"/>
        <result property="sort" column="sort"/>
        <result property="createTime" column="create_time"/>
        <result property="updateTime" column="update_time"/>
        <result property="prefixName" column="prefix_name"/>
        <result property="status" column="status"/>
        <result property="sectionType" column="section_type"/>
        <result property="publishStatus" column="publish_status"/>
        <result property="liveUrl" column="live_url"/>
        <result property="liveStartTime" column="live_start_time"/>
        <result property="liveEndTime" column="live_end_time"/>
        <result property="liveDuration" column="live_duration"/>
        <result property="recordingUrl" column="recording_url"/>
        <result property="recordingDuration" column="recording_duration"/>
        <result property="coverUrl" column="cover_url"/>
        <result property="code" column="code"/>
    </resultMap>

    <resultMap type="com.zhongzheng.modules.course.vo.CourseSectionVo" id="CourseSectionResultVo">
        <result property="sectionId" column="section_id"/>
        <result property="name" column="name"/>
        <result property="sort" column="sort"/>
        <result property="createTime" column="create_time"/>
        <result property="updateTime" column="update_time"/>
        <result property="prefixName" column="prefix_name"/>
        <result property="status" column="status"/>
        <result property="sectionType" column="section_type"/>
        <result property="publishStatus" column="publish_status"/>
        <result property="liveUrl" column="live_url"/>
        <result property="liveStartTime" column="live_start_time"/>
        <result property="liveEndTime" column="live_end_time"/>
        <result property="liveDuration" column="live_duration"/>
        <result property="recordingUrl" column="recording_url"/>
        <result property="recordingDuration" column="recording_duration"/>
        <result property="coverUrl" column="cover_url"/>
        <result property="code" column="code"/>
        <collection property="businessList" javaType="java.util.List" resultMap="CourseStreamingBusinessResult"/>
    </resultMap>

    <resultMap type="com.zhongzheng.modules.course.domain.CourseStreamingBusiness" id="CourseStreamingBusinessResult">
        <result property="id" column="id"/>
        <result property="streamingId" column="streaming_id"/>
        <result property="educationTypeId" column="education_type_id"/>
        <result property="businessId" column="business_id"/>
        <result property="projectId" column="project_id"/>

        <result property="educationName" column="education_name"/>
        <result property="projectName" column="project_name"/>
        <result property="businessName" column="business_name"/>
    </resultMap>

    <select id="selectSectionList" parameterType="com.zhongzheng.modules.course.bo.CourseSectionQueryBo" resultMap="CourseSectionResultVo">
        SELECT
            csb.*,
            cet.education_name,
            cpt.project_name,
            cb.business_name,
            cs.subject_name ,
            ccs.chapter_id,
            cc.name as chapter_name
        FROM
            course_section_business csb
                LEFT JOIN course_education_type cet ON csb.education_type_id = cet.id
                LEFT JOIN course_project_type cpt ON csb.project_id = cpt.id
                LEFT JOIN course_business cb ON csb.business_id = cb.id
                LEFT JOIN course_subject cs ON csb.subject_id = cs.id
                LEFT JOIN course_chapter_section ccs on csb.id = ccs.section_id
                LEFT JOIN course_chapter cc on ccs.chapter_id = cc.chapter_id
    </select>
</mapper>