On Wed, Nov 30, 2011 at 1:08 PM, Jeff Davis <pgsql@j-davis.com> wrote:
> One that I'd like to see is an IP address type, but that's complicated
> because inet and cidr support netmasks.
A CIDR address defines a range all by itself, without packing any
other type on top. It just needs GIST support, and an indexable
operator for "contains or is contained by"; then, you can define an
exclusion constraint over a CIDR column to enforce a
no-duplicate-or-overlapping-IP-ranges rule. I started working on that
at one point, but I didn't have as much enthusiasm as the task needed
so I gave up before accomplishing anything particularly useful.
--
Robert Haas
EnterpriseDB: http://www.enterprisedb.com
The Enterprise PostgreSQL Company