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 ' prodstats_parentid = WHERE prodstats_hash = 'f759cecc2e35b50a8be95861970ad15a'' at line 1
UPDATE prod_stats SET prodstats_numviews = prodstats_numviews+1, prodstats_lastseen = '2008-11-23 16:31:03', prodstats_catid = , prodstats_parentid = WHERE prodstats_hash = 'f759cecc2e35b50a8be95861970ad15a'