SQL Error

SQLSTATE[42000]: Syntax error or access violation: 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 '' at line 1 update fh_advertisers set ad_clicks = ad_clicks + 1 where id = ; /var/www/vhosts/findhaunts.com/httpdocs/posts/refer.php at line 19