On Mon, 20 Jan 2003 09:28:50 -0600, "Chris Boget" <chris@wild.net>
wrote:
>I'm curious how difficult this would be to implement...
The current implementation has the benefit that when you add a column
existing tuples don't have to be touched. Each tuple header stores
the number of attributes (natts) at the time of its creation. If you
query for an attribute with a higher number, you get NULL. I don't
think this can be changed easily without breaking lots of things.
Mid-2002 there has been rudimentary discussion about metadata
versioning, but it didn't get beyond its brainstorming phase ...
Servus
Manfred