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 = '5420c0e4adc100281c80bb6c46004ffa'' at line 1
UPDATE prod_stats SET prodstats_numviews = prodstats_numviews+1, prodstats_lastseen = '2013-05-25 23:08:12', prodstats_catid = , prodstats_parentid = WHERE prodstats_hash = '5420c0e4adc100281c80bb6c46004ffa'