tingshu/service/service-album/target/classes/mapper/TrackInfoMapper.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.atguigu.tingshu.album.mapper.TrackInfoMapper">
    <select id="findUserTrackPage" resultType="com.atguigu.tingshu.vo.album.TrackListVo">
        select
        ti.id track_id,
        ti.track_title,
        ti.cover_url,
        ti.media_duration,
        ti.status,
        max(if(stat_type = '0701', stat_num, 0)) playStatNum,
        max(if(stat_type = '0702', stat_num, 0)) collectStatNum,
        max(if(stat_type = '0703', stat_num, 0)) praiseStatNum,
        max(if(stat_type = '0704', stat_num, 0)) commentStatNum
        from track_info ti inner join track_stat stat
        on stat.track_id = ti.id and stat.is_deleted = 0
        <where>
            <if test="vo.userId != null">
                and ti.user_id = #{vo.userId}
            </if>
            <if test="vo.status != null and vo.status != ''">
                and status = #{vo.status}
            </if>
            <if test="vo.trackTitle != null and vo.trackTitle != ''">
                and track_title like concat('%', #{vo.trackTitle}, '%')
            </if>
            and ti.is_deleted = 0
        </where>
        group by ti.id
        order by ti.id desc
    </select>

    <select id="findAlbumTrackPage" resultType="com.atguigu.tingshu.vo.album.AlbumTrackListVo">
        select
            ti.id track_id,
            ti.track_title,
            ti.media_duration,
            ti.create_time,
            ti.order_num,
            max(if(stat_type = '0701', stat_num, 0)) playStatNum,
            max(if(stat_type = '0702', stat_num, 0)) collectStatNum,
            max(if(stat_type = '0703', stat_num, 0)) praiseStatNum,
            max(if(stat_type = '0704', stat_num, 0)) commentStatNum
        from track_info ti inner join track_stat stat
                                      on stat.track_id = ti.id and stat.is_deleted = 0
        where album_id = #{albumId} and status = '0501' and ti.is_deleted = 0
        group by ti.id
        order by ti.order_num
    </select>


    <select id="getTrackStatVo" resultType="com.atguigu.tingshu.vo.album.TrackStatVo">
        select
            max(if(stat_type = '0701', stat_num, 0)) playStatNum,
            max(if(stat_type = '0702', stat_num, 0)) collectStatNum,
            max(if(stat_type = '0703', stat_num, 0)) praiseStatNum,
            max(if(stat_type = '0704', stat_num, 0)) commentStatNum
        from track_stat where track_id = #{trackId} and is_deleted = 0
    </select>

</mapper>