I've got a table like this:
create table iptocountry (
network inet not null,
countryid int not null references countries (id)
);
The idea is that it contains mappings from IP address ranges to
countries, something like this:
insert into iptocountry values ('1.2.3.0/24', 33);
It contains a lot of rows (some 8 million, taken from hostip.info).
Unfortunately when I use the "contains" function (>>) I get a
sequential scan, as in:
select countryid from iptocountry where network >> '1.2.3.4';
Is there a suitable index that I can put on the network field to fix
this?
Rich.
--
Richard Jones, CTO Merjis Ltd.
Merjis - web marketing and technology - http://merjis.com
Team Notepad - intranets and extranets for business - http://team-notepad.com
