SQL 多加个查询条件怎么加啊 求高手关注关注啊

$query = $_SGLOBAL['db']->query("SELECT album.albumname, album.friend, space.username, space.name, space.namestatus, main.*
  FROM ".tname('pic')." main
  LEFT JOIN ".tname('album')." album ON album.albumid=main.albumid
  LEFT JOIN ".tname('space')." space ON space.uid=main.uid
  WHERE ".implode(' AND ', $wherearr)."　　//　这里多加个查询条件
  GROUP BY main.uid ORDER BY main.{$order} $sc LIMIT 0,$shownum");