From: | "Hiroshi Inoue" <Inoue(at)tpf(dot)co(dot)jp> |
---|---|
To: | "Bruce Momjian" <maillist(at)candle(dot)pha(dot)pa(dot)us>, "Tom Lane" <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
Cc: | "Bernard Frankpitt" <frankpit(at)pop(dot)dn(dot)net>, "pgsql-hackers" <pgsql-hackers(at)postgresql(dot)org> |
Subject: | RE: Scan by TID (was RE: [HACKERS] How to add a new build-in operator) |
Date: | 1999-10-13 10:14:47 |
Message-ID: | 000101bf1563$c6cf8e60$2801007e@cadzone.tpf.co.jp |
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Lists: | pgsql-hackers |
> -----Original Message-----
>
> > Bernard Frankpitt <frankpit(at)pop(dot)dn(dot)net> writes:
> > > With all due respect to people who I am sure know a lot more
> about this
> > > than I do, it seems to me that extensive use of TIDs in user
> code might
> > > place an unwelcome restraint on the internal database design.
> >
> > Yes, we'd certainly have to label it as an implementation-dependent
> > feature that might change or vanish in the future. But as long as
> > people understand that they are tying themselves to a particular
> > implementation, I can see the usefulness of making this feature
> > accessible. I'm still dubious that it's actually worth the work ...
> > but as long as I'm not the one doing the work, I can hardly object ;-).
> >
> > I just want to be sure that we don't create a maintenance headache
> > for ourselves by corrupting the system structure. We've spent a
> > lot of time cleaning up after past shortcuts, and still have many
> > more to deal with; introducing new ones doesn't seem good.
>
> Agreed.
>
I think it isn't so difficult to implement a new type of scan
on trial. But I'm not sure my story is right and I'm afraid
to invite a maintenance headache like intersexcept ....
May I proceed the work ?
Regards.
Hiroshi Inoue
Inoue(at)tpf(dot)co(dot)jp
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