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 = 'eb09a126cd1301f14aeaa1be647e16e8'' at line 1
UPDATE prod_stats SET prodstats_numviews = prodstats_numviews+1, prodstats_lastseen = '2012-05-18 21:44:24', prodstats_catid = , prodstats_parentid = WHERE prodstats_hash = 'eb09a126cd1301f14aeaa1be647e16e8'