| From: | Martijn van Oosterhout <kleptog(at)svana(dot)org> |
|---|---|
| To: | Ron Johnson <ron(dot)l(dot)johnson(at)cox(dot)net> |
| Cc: | pgsql-general(at)postgresql(dot)org |
| Subject: | Re: b-tree index performance |
| Date: | 2006-12-15 13:50:00 |
| Message-ID: | 20061215135000.GK958@svana.org |
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| Lists: | pgsql-general |
On Fri, Dec 15, 2006 at 07:44:16AM -0600, Ron Johnson wrote:
> > The difference in performence will be determined by the cost of
> > comparison. The cost of comparing strings is much higher than for
> > integers, so it will be slower.
>
> And comparing INT8 is more expensive on a 32-bit system.
The difference between int4 and int8 is probably negligable.
> Since TEXT is totally variable, is there a big difference in TEXT vs
> CHAR(8)?
Nothing measurable I'd think. It's probably the same code.
Have a nice day,
--
Martijn van Oosterhout <kleptog(at)svana(dot)org> http://svana.org/kleptog/
> From each according to his ability. To each according to his ability to litigate.
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