SELECT * FROM businesses WHERE advert>=2 AND city= AND live=1 ORDER BY id DESC LIMIT 0,40

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 live=1 ORDER BY id DESC LIMIT 0,40' at line 1
Warning: mysql_num_rows(): supplied argument is not a valid MySQL result resource in /home/citydev/public_html/classes/sql.php on line 64