Re: Reducing data type space usage - Mailing list pgsql-hackers

From Gregory Stark
Subject Re: Reducing data type space usage
Date
Msg-id 87wt82vltq.fsf@enterprisedb.com
Whole thread Raw
In response to Re: Reducing data type space usage  (Martijn van Oosterhout <kleptog@svana.org>)
List pgsql-hackers
Martijn van Oosterhout <kleptog@svana.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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