Re: cidr question (resent)

There are some operators that you can use.

col1 << col2 BOOLEAN indicating if col1 is a subnet of col2
col1 <<= col2 BOOLEAN indicating if col1 is equal or a subnet of col2
col1 >> col2 BOOLEAN indicating if col1 is a supernet of col2
col1 >>= col2 BOOLEAN indicating if col1 is equal or a supernet of col2

On Thursday, December 13, 2001, at 01:32 PM, Mir S Islam wrote:

> Resending this. Aplogies for duplicates if any.
>
>
> maybe I am not understanding it right. Here is my problem.
>
> I have a table like this
>
> Attribute | Type | Modifier
> --------------+--------------------------+----------
> ip | cidr | not null
>
> with following rows
> ip
> ---------------
> 10.0.0.1/32
> 10.0.0.50/32
> 10.0.0.255/32
> 11.0.0.0/32
> 11.0.1.200/32
> 11.0.1.20/32
> (6 rows)
>
> should not the command
> DELETE from ip_space where ip = '11.0.1.0/24'::cidr
> delete last two rows ? But it does not delete anything. Basically I
> would
> like to be able to delete a whole range or block of ip/network
> addresses.
>
> I suppose I could rewrite the above sql as
> delete from ip_space where ip >='11.0.1.0/24'::cidr and ip
> <='11.0.2.0/24'::cidr;
> Then it works. But I should not have to do that. Right ?
>
> Thanks in advance. Please email and post here.
>
> Mir
>
>
>
>
>
>
>
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David Stanaway
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