1.查找表中多余的重复记录,重复记录是根据单个字段(peopleId)来判断select * from peoplewhere peopleId in (select peopleId from people group by peopleId having count(peopleId) > 1) 2.删除表中多余的重复记录,重复记录是根据单个字段(peopleId)来判断,只留有rowid最小的记录delete from people where peopleId i
l = [1,2,3,2,1] # l = ['你','我','他','她','你'] for i in l: print("the %s has found %s" % (i, l.count(i))) #find duplicate number # print("the %s has found %s" % (i, l.count(i))) #find duplicate string#the method above would repeat count d