From: Michael Fuhr <mike@fuhr.org>
To: Michele Petrazzo - Unipex srl <michele.petrazzo@unipex.it>
Cc: pgsql-sql@postgresql.org
Subject: Re: CIdr query qestion
Date: Tue, 10 Jul 2007 03:16:43 -0600
Message-ID: <20070710091643.GA48320@winnie.fuhr.org> (raw)
In-Reply-To: <46933711.4030501@unipex.it>
References: <46933711.4030501@unipex.it>
On Tue, Jul 10, 2007 at 09:36:49AM +0200, Michele Petrazzo - Unipex srl wrote:
> A question about cidr query. I'm tring to use the various cidr functions
> to exclude a A sub class, but I don't understand how use it:
>
> SELECT count(ip_addr), ip_addr from wi_log_network where ip_addr !=
> network('10.10.0.0/16', 16) group by (ip_addr);
>
> it don't exclude the 10.10 ! Tried also the abbr or set_masklen keyword,
> but the same. How do it?
Please post the actual query you're running. The above fails with
ERROR: function network("unknown", integer) does not exist
Does the following help?
CREATE TABLE test (id integer PRIMARY KEY, ip_addr inet NOT NULL);
INSERT INTO test (id, ip_addr) VALUES (1, '10.2.3.4');
INSERT INTO test (id, ip_addr) VALUES (2, '10.10.5.6');
SELECT id,
ip_addr,
set_masklen(ip_addr, 16),
network(set_masklen(ip_addr, 16)),
network(set_masklen(ip_addr, 16)) = '10.10.0.0/16',
'10.10.0.0/16'::cidr >> ip_addr,
NOT '10.10.0.0/16'::cidr >> ip_addr
FROM test;
id | ip_addr | set_masklen | network | ?column? | ?column? | ?column?
----+-----------+--------------+--------------+----------+----------+----------
1 | 10.2.3.4 | 10.2.3.4/16 | 10.2.0.0/16 | f | f | t
2 | 10.10.5.6 | 10.10.5.6/16 | 10.10.0.0/16 | t | t | f
(2 rows)
> P.s. Tried the >>, but it only include the values that I want to
> exclude! (And I don't found how to do the opposite!)
You can use NOT to negate a boolean expression; see above.
--
Michael Fuhr
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To: pgsql-sql@postgresql.org
Cc: mike@fuhr.org, michele.petrazzo@unipex.it
Subject: Re: CIdr query qestion
In-Reply-To: <20070710091643.GA48320@winnie.fuhr.org>
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