| From: | Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> |
|---|---|
| To: | Bruno Wolff III <bruno(at)wolff(dot)to> |
| Cc: | Ilia Kantor <ilia(at)obnovlenie(dot)ru>, pgsql-patches(at)postgresql(dot)org |
| Subject: | Re: CRC32 function |
| Date: | 2005-08-25 22:34:19 |
| Message-ID: | 200508252234.j7PMYJk08997@candle.pha.pa.us |
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| Thread: | |
| Lists: | pgsql-patches |
Bruno Wolff III wrote:
> On Thu, Aug 25, 2005 at 16:14:04 -0400,
> Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us> wrote:
> > Ilia Kantor wrote:
> > > Both backend and users may have a nice use of the function.
> > >
> > >
> > >
> > > Nice and fast hashing when one doesn't need encryption.
> >
> > We already have MD5 encryption in the server. Why would someone want
> > CRC32?
True, but if there are several million rows, a 32-bit CRC isn't really
useful (too many collisions). I can see it useful in a few cases, but
not for general usefulness.
--
Bruce Momjian | http://candle.pha.pa.us
pgman(at)candle(dot)pha(dot)pa(dot)us | (610) 359-1001
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+ Christ can be your backup. | Newtown Square, Pennsylvania 19073
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