SQL 列去重复

SQL去除列中重复ID

1.select * from his.tbStocktakeInfo

where StocktakeInfoID in (select StocktakeInfoID from 

his.tbStocktakeInfo group by StocktakeInfoID having count(StocktakeInfoID) > 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 in (select peopleId from people group by peopleId   having count(peopleId) > 1)

and rowid not in (select min(rowid) from people group by peopleId having count(peopleId )>1)

3、查找表中多余的重复记录（多个字段）
select * from vitae a
where (a.peopleId,a.seq) in (select peopleId,seq from vitae group by peopleId,seq having count(*) > 1)


4、删除表中多余的重复记录（多个字段），只留有rowid最小的记录
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、查找表中多余的重复记录（多个字段），不包含rowid最小的记录
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、select  InventoryID,GoodsName,BatchNo,Format,Cost,GoodsID from dbo.v_BatchGoodsInventory as a 

where BatchNo = (select MIN(BatchNo) 

from dbo.v_BatchGoodsInventory as b 

where a.GoodsID = b.GoodsID )AND StoreID='C8E43A8D-0311-490F-AA5A-84260DFC87EA' 

AND a.Status=1 AND a.GoodsStatus=1 ORDER  BY  a.GoodsName;