A Database Error Occurred

Error Number: 1054

Unknown column 'conferences' in 'where clause'

SELECT id FROM accommodation WHERE approved = 1 AND (type = 3 OR type1 = 3) AND `conferences` = 1 AND (town LIKE '%' OR village LIKE '%') UNION SELECT id FROM hotels WHERE approved = 1 AND (type = 3 OR type1 = 3) AND `conferences` = 1 AND (town LIKE '%')