🚀 go-pugleaf

There is absolutely no way to add a field to an open dataset (ado dataset or
client dataset).  And you can't select back a dummy field either, because it
won't be editable unless it comes from an actual field in the table.

The only way I could think of, would be to create an additional dataset,
with 2 fields: a unique id which corresponds to an id field in you're
original dataset, and the new field.  Then you could set up a master detail
relationship, so that whatever record you're on in the original dataset, the
new dataset would be on the matching record.

Hope this helps.

"xu ying" <s142857@21cn.com> wrote in message news:3c65ea8c$1_1@dnews...
>
> TADODataSet * dsSelect;
> .....
> dsSelect->CommandText = "SELECT column1, column2 FROM TABLE1";
> dsSelect->Open();
>
> file://now I need to add the extra column3 into dsSelect.
> file://column3 is not incluted in TABLE1.
> file://How to do that?
>
> file://����
> file://THEN:
>
> dsSelect->Close();
>