| From: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
|---|---|
| To: | Alvaro Herrera <alvherre(at)commandprompt(dot)com> |
| Cc: | Bruce Momjian <bruce(at)momjian(dot)us>, Pg Hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: temp tables should not have pg_shdepend entries |
| Date: | 2008-04-08 17:42:02 |
| Message-ID: | 3603.1207676522@sss.pgh.pa.us |
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| Lists: | pgsql-hackers |
Alvaro Herrera <alvherre(at)commandprompt(dot)com> writes:
> Tom Lane wrote:
>> I agree with that, but I think your idea of not making the pg_shdepend
>> entries is a pointless and possibly dangerous micro-optimization.
>> How much actual speedup would it provide, anyway?
> Speedup? Not sure -- I'm more worried about catalog bloat for people
> who create lots of temp tables.
They're going to have far more bloat in pg_class, pg_attribute, etc.
A more useful thing to do to save catalog bloat would be to stop storing
the 100%-predictable pg_attribute entries for system columns --- that'd
save six or seven rows per table, not just one.
regards, tom lane
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