how to extend database class.. extra method required

[eluser]coolfactor[/eluser]
There is no way to extend the DB class right now. The extending of libraries was added in a recent version, and the design of the DB classes didn't facilitate them being extended in the same way. There's a lot of discussion about this behind the scenes, but in the meantime, I would suggest taking TaMeR's advice and building the needed functionality into your model, even if you must iterate over the resultset more than once. to build the array you need.