On Tue, 2009-01-27 at 13:06 +0100, Zdenek Kotala wrote:
> Space reservation MUST TO be implemented if we
> want to have 8.4->8.5 upgrade.
Why not just add a few dummy columns onto each catalog table? If we need
space to expand a row we can just drop one of the dummy columns from the
new catalog definition.
That's an old DBA trick to avoid having to rewrite a table when you want
to add a column.
Seems much simpler to add columns than write special code, especially
when we might find the new code has bugs and hasn't done what we thought
it might.
-- Simon Riggs www.2ndQuadrant.comPostgreSQL Training, Services and Support