Adding fields to database table and copying data from other fields

Hi All,
I am having a database table where in I am having a column 'FIELD1'.
My requirement is that I want to add two more fields in the table 'FIELD2' and 'FIELD3'.
I then want to copy all the data in field1 to field2 and field3. then I want to delete the original field1.
for Ex.
lets say FIELD1 = 100.
now I want to add FIELD2 and FIELD3 in the table and make FIELD2 = 100 AND FIELD3 = 100. The FIELD1 will be deleted from table.
Please suggest the methods to do so.
It is urgent.

Hi Gaurav,
do this way ...
data : begin of it_ztab occurs 0 with header line,
          fld1 like ztab-fld1,
          fld2 like ztab-fld2,
          fld3 like ztab-fld3,
        end of it_ztab.
data : wa_ztab like it_ztab.
it_ztab-fld1 = '100'.
append it_ztab.
clear    it_ztab.
loop at it_ztab.
wa_ztab-fld2 = it_ztab-fld1.
wa_ztab-fld3 = it_ztab-fld1.
wa_ztab-fld1 = ' '.
* Make sure that the structure of internal table/ workarea and database table shoud be same
modify ztab from wa_ztab.
endloop.

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         -- close file
for i in 1..50 loop
       if substr(i,-1) = 0 then
             message ('flush ' || i);
       end if;
              client_text_io.put_line(fil1, lpad(' ',2000));
              client_text_io.put_line(fil2, lpad(' ',2000));
              client_text_io.put_line(fil1, lpad(' ',2000));
              client_text_io.put_line(fil2, lpad(' ',2000));
end loop;
         client_text_io.fclose(fil1);
         client_text_io.fclose(fil2);
    end loop;
   set_application_property(cursor_style,'default');
    exception
         when others then
              message(sqlcode ||' ' ||sqlerrm);
   end download_file;    i try this but this code onlydownload image not data from database tables
    public void downloadImage(FacesContext facesContext, OutputStream outputStream)
        BindingContainer bindings = BindingContext.getCurrent().getCurrentBindingsEntry();
        // get an ADF attributevalue from the ADF page definitions
        AttributeBinding attr = (AttributeBinding) bindings.getControlBinding("DocumentImage");
        if (attr == null)
            return;
        // the value is a BlobDomain data type
        BlobDomain blob = (BlobDomain) attr.getInputValue();
        try
        {   // copy the data from the BlobDomain to the output stream
            IOUtils.copy(blob.getInputStream(), outputStream);
            // cloase the blob to release the recources
            blob.closeInputStream();
            // flush the output stream
            outputStream.flush();
        catch (IOException e)
            // handle errors
            e.printStackTrace();
            FacesMessage msg = new FacesMessage(FacesMessage.SEVERITY_ERROR, e.getMessage(), "");
            FacesContext.getCurrentInstance().addMessage(null, msg);
        }

You should ask your forum in the ADF-forum.

Adding fields to database table and copying data from other fields

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