ORA：00928 SELECT关键字丢失

Question

删除重复行的代码

获取选择关键字缺少错误。请帮我解决。

  With studentCTE As (
    Select ROW_NUMBER() Over(Partition BY RNO ORDER By NAME) as RowNumber 
      from student) 

   Delete from studentCTE 
    where RowNumber > 1; 

   select * from studentCTE;

Answer 1

如果要从表中删除，则需要以单词DELETE开头。您可以使用查询选择要删除的行，但是查询的每个部分（包括WITH子句）都必须在DELETE之后合并在一起。

delete from student where rowid in (
  with cte as (
    select ROW_NUMBER() Over(Partition BY RNO ORDER By NAME) as RowNumber,
      rowid as rid
    from student
  )
  select rid from cte
  where rownumber > 1
);