> Tatsuo Ishii <[EMAIL PROTECTED]> writes:
> > Probably VACUUM works well for small to medium size tables, but not
> > for huge ones. I'm considering about to implement "on the spot
> > salvaging dead tuples".
> 
> That's impossible on its face, except for the special case where the
> same transaction inserts and deletes a tuple.  In all other cases, the
> transaction deleting a tuple cannot know whether it will commit.

Of course. We need to keep a list of such that tuples until commit or
abort.
--
Tatsuo Ishii

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