ContentVodMappingMapper.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.ContentVodMappingMapper">

    <select id="getCourseByContentId" parameterType="long" resultType="com.subsidy.model.CourseDictDO">
        SELECT
            t2.*
        FROM
            course_content t
            LEFT JOIN course_dict t2 ON t.course_id = t2.id
        WHERE
            t.delete_date IS NULL
            AND t2.delete_date IS NULL
            AND t.id = #{contentId}
    </select>

    <select id="oldVodIds" parameterType="long" resultType="long">
        SELECT
            t.vod_id
        FROM
            paper_dict t
            LEFT JOIN course_content t2 ON t.course_id = t2.course_id
        WHERE
            t.delete_date IS NULL
            AND t2.id = #{contentId}
    </select>

</mapper>