CourseContentMapper.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.subsidy.mapper.CourseContentMapper">

    <!-- 通用查询映射结果 -->
    <resultMap id="BaseResultMap" type="com.subsidy.model.CourseContentDO">
        <id column="id" property="id" />
        <result column="create_date" property="createDate" />
        <result column="update_date" property="updateDate" />
        <result column="delete_date" property="deleteDate" />
        <result column="course_id" property="courseId" />
        <result column="content" property="content" />
        <result column="order_no" property="orderNo" />
    </resultMap>

    <!-- 通用查询结果列 -->
    <sql id="Base_Column_List">
        create_date,
        update_date,
        delete_date,
        id, course_id, content, order_no
    </sql>

    <select id="getCourseVods" parameterType="long" resultType="com.subsidy.model.VodDictDO">
        SELECT
           t2.id,
            t2.content_id,
            t2.vod_name,
            t2.vod_length,
            t2.vod_type,
            t2.vod_size,
            t2.vod_url,
            t2.vod_code,
            t2.teacher_name,
            t2.cover_page
        FROM
            course_content t
            LEFT JOIN vod_dict t2 ON t.id = t2.content_id
        WHERE
            t.delete_date IS NULL
            AND t2.delete_date IS NULL
            and t.course_id = #{courseId}
            and t2.id is not null
    </select>

    <select id="contentVodProcess" resultType="com.subsidy.vo.member.MemberVodVO">
        SELECT
        t3.id,
        t3.vod_url,
        t3.vod_alias_name as vod_name,
        t3.vod_type,
        t3.vod_length,
        t3.play_record,
        if(t3.vod_length - t3.sumPlay > 0, TRUNCATE(t3.vod_length - t3.sumPlay,0), 0 ) AS leftLength,
        if(TRUNCATE( t3.sumPlay * 100 / t3.vod_length,2) &lt; 100,TRUNCATE( t3.sumPlay * 100 / t3.vod_length, 2),100) AS percent
        FROM
        (
        SELECT
        t.id,
        t.vod_url,
        ifnull(cvm.vod_alias_name,t.vod_name) as vod_alias_name,
        t.vod_type,
        t.vod_length,
        cvm.order_no as or1,
        t.order_no as or2,
        ifnull( t2.sumPlay, 0 ) AS sumPlay,
        t4.play_record
        FROM
        vod_dict t
        LEFT JOIN content_vod_mapping cvm ON cvm.vod_id = t.id
        LEFT JOIN (
        SELECT
        t.vod_id,
        t.member_id,
        sum( t.play_length ) AS sumPlay
        FROM
        vod_play_history t
        WHERE
        t.delete_date IS NULL
        AND t.member_id = #{memberId}
        AND t.class_id = #{classId}
        GROUP BY
        t.vod_id,
        t.member_id,
        t.class_id
        ) t2 ON t.id = t2.vod_id
        LEFT JOIN (
        SELECT
        t.member_id,
        t.vod_id,
        t2.play_record
        FROM
        (
        SELECT
        t.member_id,
        t.vod_id,
        max( t.id ) AS id
        FROM
        vod_play_history t
        WHERE
        t.delete_date IS NULL
        AND t.member_id = #{memberId}
        and t.class_id = #{classId}
        GROUP BY
        t.member_id,
        t.vod_id,
        t.class_id
        ) t
        LEFT JOIN vod_play_history t2 ON t.id = t2.id
        ) t4 ON t2.vod_id = t4.vod_id
        WHERE
        t.delete_date IS NULL
        AND cvm.delete_date IS NULL
        and cvm.content_id = #{contentId}
        ) t3
        ORDER BY
        t3.or1,t3.or2
    </select>

    <select id="contentFiles" parameterType="long" resultType="com.subsidy.model.FileDictDO">
        SELECT
            t2.id,
            t2.file_name,
            t2.file_size,
            t2.file_type,
            t2.file_url
        FROM
            course_content t
            LEFT JOIN file_dict t2 ON t.id = t2.content_id
        WHERE
            t.delete_date IS NULL
            AND t2.delete_date IS NULL
            AND t2.id IS NOT NULL
            AND t.course_id = #{courseId}
        ORDER BY
            t.order_no,
            t2.order_no
    </select>

    <select id="selectMaxOrderNo" parameterType="long" resultType="integer">
        SELECT
            max(t.order_no)
        FROM
            course_content t
        WHERE
            t.delete_date IS NULL
            AND t.course_id = #{courseId}
    </select>

</mapper>