update db_user_online set ip='216.73.216.19',agent='Mozilla/5.0 AppleWebKit/537.36 (KHTML, like Gecko; compatible; ClaudeBot/1.0; +claudebot@anthropic.com)',channel='nao',classid=0,dataid=0,location='脑科 浏览脑科 针灸治疗神经衰弱',tim_update='2026-2-4 19:41:50' where userid<1 and sessionid='427365029'