>- If you can apply SQL commands to a DataTable, then for each column in each DataTable you might be able to build an UPDATE statement. Fox pseudocode:
>

>UPDATE SomeDataTable SET ;
>  SomeColumn = SomeDefaultValue ;
>  WHERE ISNULL( SomeColumn )
>

Is there a way to apply some SQL command on the dataset? I do not want to change the existing data itself.