| From: | Gregory Stark <stark(at)enterprisedb(dot)com> |
|---|---|
| To: | Martijn van Oosterhout <kleptog(at)svana(dot)org> |
| Cc: | Bruce Momjian <bruce(at)momjian(dot)us>, Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>, pgsql-hackers <pgsql-hackers(at)postgresql(dot)org> |
| Subject: | Re: Reducing data type space usage |
| Date: | 2006-09-17 10:17:37 |
| Message-ID: | 87wt82vltq.fsf@enterprisedb.com |
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| Thread: | |
| Lists: | pgsql-hackers |
Martijn van Oosterhout <kleptog(at)svana(dot)org> writes:
> On Sat, Sep 16, 2006 at 08:56:11PM +0100, Gregory Stark wrote:
>
> [Re inet and cidr]
>
>> Why are these varlena? Just for ipv6 addresses? Is the network mask length not
>> stored if it's not present? This gives us a strange corner case in that ipv4
>> addresses will *always* fit in the smallfoo data type and ipv6 *never* fit.
>> Ie, we'll essentially end up with an ipv4inet and an ipv6inet. Sad in a way.
>
> Eh? Either will always fit. ipv6 is 128 *bits* and the new varlena
> header goes to 128 *bytes*. That should fit easily, no?
Er, oops.
--
Gregory Stark
EnterpriseDB http://www.enterprisedb.com
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