RE: WAL feature

> > >     Row reuse without vacuum
> >
> > Yes, it will help to remove uncommitted rows.
> 
> Same question as I asked Bruce ... how? :)  I wasn't trying to be
> fascisious(sp?) when I asked, I didn't realize the two were
> connected and am curious as to how :)

After implementing UNDO operation (we have only REDO now)
transactions will roll back their changes on abort and so
free space occupied by inserted rows.

How to re-use freed space (ie how to maintain information about
blocks available for insertion of new rows) is another issue,
of course, but anyway - space must be freed first.

Vadim