If both pollers are from the same table, you should be able to select one OID as the polled value and the second as Label. Right click the custom poller in UnDP application and select Label. On edit page select the option "Use labels from a table column".
Or you can edit the table resource on web and select more pollers for the same table resource.
I would also like to do something similar. I most definitely want to use custom SQL report rather than the default custom poller resource though.