1、查找表中重复记录,根据单个字段来判断
Select * from tableA where peopleId in(select peopleId from tableA group by peopleI having count (peopleId)>1)
2、查找表中重复记录,根据多个字段判断
Select * from tableA as A where (A.peopleId,A.seq) in (select peopleId,seq from tableA group by peopleId,seq having count (*)>1)
不管遇到什么样的困难,一定要坚持,即便是嘴里唠叨着累、烦、想放弃,心里还是要默默的给自己说:再试试看再坚持一次。等时间时间久了回头看看原来自己战胜了很多次,原来自己是可以的,坚持坚持就好了。