Question

I have this DML statement..

delete from  (select  key,value,computed, row_number()  OVER (Partition By key, value order by seq asc)  as a
from excelformats  a )
where A > 1

and this throws

ORA-01732: data manipulation operation not legal on this view

This statement basically selects duplicate rows from excelFormats table those to be deleted
How can I revise so that

Answer 1

You could use:

DELETE FROM excelformats
 WHERE rowid not in 
            (SELECT MIN(rowid) 
               FROM excelformats
              GROUP BY key, value, computed); 

This will delete duplicate rows in your excelformats table given the three key columns you stated.

Hope it helps…