SQL Server 删除重複記錄，隻保留一條記錄

select * from TABLE where id in (select max(id) id from TABLE where year(time)=2016 and month(time)=4 and day(time)=16 group by node having count(node) > 1) order by click desc


delete from TABLE where id in (select max(id) id from TABLE where year(time)=2016 and month(time)=4 and day(time)=16 group by node having count(node) > 1) order by click desc
           

用SQL語句,删除掉重複項隻保留一條
在幾千條記錄裡,存在着些相同的記錄,如何能用SQL語句,删除掉重複的呢
1、查找表中多餘的重複記錄，重複記錄是根據單個字段（peopleId）來判斷 
select * from people 
where peopleId in (select peopleId from people group by peopleId having count(peopleId) > 1) 

2、删除表中多餘的重複記錄，重複記錄是根據單個字段（peopleId）來判斷，隻留有rowid最小的記錄 
delete from people 
where   peopleName in (select peopleName    from people group by peopleName      having count(peopleName) > 1) 
and   peopleId not in (select min(peopleId) from people group by peopleName     having count(peopleName)>1) 

3、查找表中多餘的重複記錄（多個字段） 
select * from vitae a 
where (a.peopleId,a.seq) in (select peopleId,seq from vitae group by peopleId,seq having count(*) > 1) 

4、删除表中多餘的重複記錄（多個字段），隻留有rowid最小的記錄 
delete from vitae a 
where (a.peopleId,a.seq) in (select peopleId,seq from vitae group by peopleId,seq having count(*) > 1) 
and rowid not in (select min(rowid) from vitae group by peopleId,seq having count(*)>1) 

5、查找表中多餘的重複記錄（多個字段），不包含rowid最小的記錄 
select * from vitae a 
where (a.peopleId,a.seq) in (select peopleId,seq from vitae group by peopleId,seq having count(*) > 1) 
and rowid not in (select min(rowid) from vitae group by peopleId,seq having count(*)>1)   

6.消除一個字段的左邊的第一位：

update tableName set [Title]=Right([Title],(len([Title])-1)) where Title like '村%'

7.消除一個字段的右邊的第一位：

update tableName set [Title]=left([Title],(len([Title])-1)) where Title like '%村'

8.假删除表中多餘的重複記錄（多個字段），不包含rowid最小的記錄 
update vitae set ispass=-1
where peopleId in (select peopleId from vitae group by peopleId