Sql 在oracle中从表中删除重复数据

我有一个表副本，其中显示的数据如下：

select * from ot.duplicate;

我想从我尝试的表中删除重复数据：

delete  from (select * from(select * from ot.duplicate a
union
select * from ot.duplicate b) t1);

但我得到了一个错误：

ORA-01752: cannot delete from view without exactly one key-preserved table

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您应该尝试以下查询-

DELETE FROM ot.duplicate A
WHERE ROWID > (SELECT MIN(ROWID)
               FROM ot.duplicate B
               WHERE A.ID = B.ID
               AND A.NAME = B.NAME)

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在SQL Server中应该是这样的

;with cte as (
select * from (
select id,name ,ROW_NUMBER() over(partition by name order by id) as trow from testt
) as p  
)

delete from cte where trow>1

您可以使用exists

干杯

Delete from your_table y1
Where exists (select 1 
From your_table y2
Where y1.id = y2.id
Abd y1.name = y2.name
And y1.rowid > y2.rowid);