On Wed, Jul 15, 2015 at 12:32 PM, David G. Johnston <david.g.johnston@xxxxxxxxx> wrote:
You may be able to put Table Inheritance to good use here...I do not know (but doubt) if HOT optimization works when going from NULL to non-NULL since the former is stored in a bitmap while the later occupies normal relation space and thus the update would likely end up writing an entirely new record upon each event category recording.David J.
Thanks!
