cooleshow/cooleshow-user/user-biz/src/main/resources/config/mybatis/LessonCoursewareMapper.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.yonge.cooleshow.biz.dal.dao.LessonCoursewareDao">
    <select id="selectPage"
            resultType="com.yonge.cooleshow.biz.dal.wrapper.LessonCoursewareWrapper$LessonCoursewareDto">
        select id_ id, subject_id_ subjectId, lesson_course_id_ lessonCoursewareId, enable_ enable from lesson_courseware
        <where>
            <if test="param.subjectId != null">
                and subject_id_ = #{param.subjectId}
            </if>
            <if test="param.enable != null">
                and enable_ = #{param.enable}
            </if>
        </where>
        order by create_time_ desc
    </select>
    <select id="getLessonCoursewareSubjectList" resultType="com.yonge.cooleshow.biz.dal.entity.Subject">
        select s.* from lesson_courseware lc
        left join subject s on s.id_ = lc.subject_id_
        where lc.subject_id_ IS NOT NULL
        group by lc.subject_id_
    </select>
</mapper>