| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
| Cc: | Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>, pgsql-hackers(at)postgresql(dot)org |
| Subject: | Re: RAM-only temporary tables |
| Date: | 2008-11-06 16:23:38 |
| Message-ID: | 27417.1225988618@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Alvaro Herrera <alvherre(at)commandprompt(dot)com> writes:
> Right -- I don't expect we can make use of such an idea readily. Not
> creating unnecessary pg_attribute entries for system columns is probably
> a lot easier to do.
I seem to recall having proposed that in the past, and getting shot down
on the basis that clients might be depending on those pg_attribute
entries being there. I'm not sure how big a risk there really is ---
most of the code I've seen explicitly selects attnum > 0 --- but it's a
consideration.
regards, tom lane
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