Špatný dotaz: Unknown column 'dne' in 'where clause'
SELECT id,nazev,poradi,text,zkracene,url,id_kategorie,kod,datum,datum_zobrazovat FROM prispevek WHERE zobrazovat="A" AND (id_kategorie in(dne-7-2-2018-jsme-se-se-zaky-trid-ft1-a-ft3-zucastnili-exkurze-do-prahy) or exists(select * from prispevek_kategorie pk where pk.id_prispevek = prispevek.id and pk.id_kategorie in (dne-7-2-2018-jsme-se-se-zaky-trid-ft1-a-ft3-zucastnili-exkurze-do-prahy))) order by datum DESC ,id DESC