Re: New version of money type
От | David Fetter |
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Тема | Re: New version of money type |
Дата | |
Msg-id | 20060930054353.GH24766@fetter.org обсуждение исходный текст |
Ответ на | Re: New version of money type (tomas@tuxteam.de) |
Ответы |
Re: New version of money type
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Список | pgsql-hackers |
On Sat, Sep 30, 2006 at 04:42:13AM +0000, tomas@tuxteam.de wrote: > -----BEGIN PGP SIGNED MESSAGE----- > Hash: SHA1 > > On Fri, Sep 29, 2006 at 12:19:07PM +0200, Martijn van Oosterhout wrote: > > On Thu, Sep 28, 2006 at 06:32:11PM -0500, Jim C. Nasby wrote: > If you are at that, it's worth noting that the currency tag consists > of three capital ASCII letters. That would be fifteen bits, take or > give. I feel silly for even mentioning this, but there are less than 256 countries in the UN, and as far as I know, each has at most one currency, so you could use 8 bits instead of 15. > That leaves forty-eightish bits for the number or about 10^14. By the above calculation, 56 bits or about 7.2 * 10^16. > THis is only half-serious, since there are other problems with > currencies (their value is dependent on time, all that Pandora's > box). It's not just dependent on time. Exchange rates vary in such a way that the relationships are not always transitive :P Cheers, D -- David Fetter <david@fetter.org> http://fetter.org/ phone: +1 415 235 3778 AIM: dfetter666 Skype: davidfetter Remember to vote!
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