A key goal of the DBI is to provide a database independant interface to databases to enable application portability. What you're suggesting seems inherently database specific.
The DBI defines a way for drivers to offer database specific functionality. A good way to move a suggestion like this move forward is to work with multiple driver authors to add similar functionality to their drivers. Exposing the full features that a specific database makes available, via a database specific interface, is immediately helpful for users of that driver. Once multiple drivers provide similar functionality then it would be reasonable to work on a design for extending the DBI itself. Tim.
