Error: SELECT distinct(country) as country FROM ASO_free_listings WHERE listing_category_id = and country != 'United States' and country != 'Aviation Resources'and active = 1 order by country

(1064) 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 'and country != 'United States' and country != 'Aviation Resources'and active = 1' at line 1