Alvaro Herrera wrote:
> On Fri, Jul 09, 2004 at 03:34:47PM -0400, Bruce Momjian wrote:
> > Alvaro Herrera wrote:
> > > On Fri, Jul 09, 2004 at 09:07:58PM +0200, Dennis Bjorklund wrote:
> > > > On Fri, 9 Jul 2004, Alvaro Herrera wrote:
> > > >
> > > > > Clearly savepoints do not allow for a snapshot to be released; nested
> > > > > xacts do.
> > > >
> > > > Why not?
> > >
> > > What is it?
> >
> > Simon posted it. It is called RELEASE:
>
> We can't actually release anything (commit the subtransactions), because
> they may be savepoints established after that point, and they are
> logically "inside" the previously established ones. At RELEASE we can't
> really release -- we just lose the name and thus the opportunity to
> rollback to it.
Oh, good point. Yes, those savepoints in between are still active. But
do we release anything on subxact commit? I though it was only on xact
abort, and that does invalidate all the savepoints in between.
-- Bruce Momjian | http://candle.pha.pa.us pgman@candle.pha.pa.us | (610)
359-1001+ If your life is a hard drive, | 13 Roberts Road + Christ can be your backup. | Newtown Square,
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