On Wed, 14 Jan 2004, Yannick Warnier wrote:
> Le mar 13/01/2004 à 00:43, Bruce Momjian a écrit :
> > Arnold Mavromatis wrote:
> > > Hi
> > >
> > > How are column files in a table that have been assigned null stored on disk
> > > in Postgresql 7.4?
> >
> > Each row has a bitmap showing all the NULL values on that row.
>
> Is it the same for PG 7.3?
Yes, Postgresql has done this for quite some time.