Errore su SELECT tab_valute.Sigla, tab_valute.Cifre_decimali FROM tab_nazioniv INNER JOIN tab_valute ON tab_nazioniv.ID_valuta = tab_valute.ID_valuta WHERE tab_nazioniv.ID_nazionev = : 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 '' at line 1