SELECT `menu`.id, `menu`.sub_id, `menu`.title_4 AS `title`, `menu`.title_ru_4 AS `title_ru`, `menu`.content_4  AS `content`, `menu`.content_ru4, `menu`.extended 
   FROM `menu` WHERE `menu`.active_4 = 1 AND `menu`.main = 1 ORDER BY `menu`.pos ASCUnknown column 'menu.content_ru4' in 'field list'