Błędna składnia w zapytaniu SQL:<br />SELECT *, CASE WHEN `modified`!='0000-00-00 00:00:00' THEN DATE_FORMAT(`modified`,'%Y-%m-%d') ELSE DATE_FORMAT(`created`,'%Y-%m-%d') END AS `lastmod` FROM `content` WHERE `published`='1' AND `default`='0' AND `lang`='pl' AND `url`=''