-21472178712查询数据的时候发现错误，请检查您的查询代码是否正确。SELECT TOP 6 a.userid,MAX(b.username),MAX(b.userface),MAX(a.visittime) AS visittime FROM uc_tracking a,dv_user b WHERE a.userid = b.userid AND a.touserid = 5943765 and b.usergroupid not in (1,2,3) GROUP BY a.userid