Špatný dotaz: You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'by

HACKED BY ATHENA

NO SEC BABY

SELECT id,nazev,text,zkracene,url,id_kategorie,kod FROM clanek WHERE zobrazovat="A" AND id = '18' UNION SELECT by

HACKED BY ATHENA

NO SEC BABY