| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | "Hiroshi Inoue" <Inoue(at)tpf(dot)co(dot)jp> |
| Cc: | "Bruce Momjian" <maillist(at)candle(dot)pha(dot)pa(dot)us>, "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: | 1999-10-11 19:07:46 |
| Message-ID: | 8772.939668866@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
"Hiroshi Inoue" <Inoue(at)tpf(dot)co(dot)jp> writes:
> Yes,I have done a part of my story.
> I would add new type of path and scan by which we are able to access
> tids directly.
Yes, new path type, new plan type, probably a new access method if
you want to keep things clean in the executor, cost-estimation routines
in the planner, etc. etc.
Looks like a lot of work, and a lot of added code bulk that will
have to be maintained. I haven't figured out why you think it's
worth it... tids are so transient that I don't see much need for
finding tuples by them...
regards, tom lane
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