On Fri, 2006-11-10 at 12:32 +0100, Zeugswetter Andreas ADI SD wrote:
> e.g. a different header seems no easier in overflow than in heap
True. The idea there is that we can turn frequent update on/off fairly easily for normal tables since there are no tuple format changes in the main heap. It also allows HOT to avoid wasting space when a table is heavily updated in certain places only.
I general though, it would make implementation a bit simpler when tuples with different header are isolated in a different relation.
