SELECT `info`.*, `photo`.`photo`, `photo`.`format` FROM `info` LEFT JOIN `photo` ON `info`.`uid` = `photo`.`uid` WHERE `info`.`uid` = `photo`.`uid` GROUP BY `info`.`uid` ORDER BY `uid` DESC LIMIT 12
исправил
SELECT `info`.*, `photo`.`photo`, `photo`.`format` FROM `info` INNER JOIN `photo` ON `info`.`uid` = `photo`.`uid` GROUP BY `info`.`uid` ORDER BY `info`.`uid` DESC LIMIT 12