织梦模板dedecms后台文章列表中显示自定义字段方法

$wheresql = empty($channelID) ? " WHERE arc.channel > 0  AND arc.arcrank > -2 " : " WHERE arc.channel = '$channelID' AND arc.arcrank > -2 ";

   $query = "SELECT arc.ID,arc.typeID,arc.senddate,arc.flag,arc.ismake,arc.channel,arc.arcrank,arc.click,arc.Title,arc.color,arc.litpic,arc.pubdate,arc.mID    FROM `$maintable` arc    $wheresql    ORDER BY $orderbyFIEld DESC";

    $query = "SELECT arc.ID,addon.huohao,arc.mID    FROM `$maintable` arc,`dede_addonarticle` addon,`dede_arctype` act where (arc.ID=addon.aID)     and (arc.typeID=act.ID)$wheresql ORDER BY $orderbyFIEld DESC";