Обсуждение: CIdr query qestion

Hi ml!

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?

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!)

Thanks,
Michele

On Tue, 10 Jul 2007 09:36:49 +0200
Michele Petrazzo - Unipex srl <michele.petrazzo@unipex.it> wrote:

> Hi ml!
> 
> 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?
> 
> 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!)
> 


Couldnt you do a :

select count(ip_addr), ip_addr from wi_log_network where not (ip_addr
<< '10.10.0.0/16') group by (ip_addr);


Best regards 
Jesper K. Pedersen

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