On Sat, 29 Jan 2005 22:24:46 +0300, Andrey V. Semyonov <wilfre@xxxxxxx> wrote:
> Hi there.
> How do I create a sequence of type inet for automatic assignment an
> IP/32 to a new row?
> Neither nextval() nor CREATE SEQUENCE seem for me to work with type inet
> (PostgreSQL 8.0.0, pgAdmin III v 1.2.0).
>
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>
First of all you need a way to convert bigint to inet, say, something
like:
CREATE OR REPLACE FUNCTION bigint_to_inet(i bigint) RETURNS inet AS $$
BEGIN RETURN ((i / 16777216)||'.'||(i % 16777216 / 65536)||'.'||(i
% 65536 / 256)||'.'||(i % 256))::inet; END;
$$ LANGUAGE plpgsql IMMUTABLE;
then create a sequence:
CREATE SEQUENCE foo_inetaddrs_seq START 192*16777216::bigint+168*65536;
CREATE TABLE foo (
inetaddrs inet default
bigint_to_inet(netval('foo_inetaddrs_seq')) PRIMARY KEY,
--- rest with whatever...
);
Something like this?
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