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

From Martijn van Oosterhout
Subject Re: Reducing data type space usage
Date
Msg-id 20060917101616.GB14893@svana.org
Whole thread Raw
In response to Re: Reducing data type space usage  (Gregory Stark <stark@enterprisedb.com>)
Responses Re: Reducing data type space usage  (Gregory Stark <stark@enterprisedb.com>)
List pgsql-hackers
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?

Have a nice day,
--
Martijn van Oosterhout   <kleptog@svana.org>   http://svana.org/kleptog/
> From each according to his ability. To each according to his ability to litigate.

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