筛选重复行，删除重复行使用游标来实现。deletefromvitaeawhere(a.peopleId,a.seq)in(selectpeopleId,seqfromvitaegroupbypeopleId,seqhavingcount(*)>1)androwidnotin(selectmin(rowid)fromvitaegroupbypeopleId,seqhavingcount(*)>1)