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From: Jasen Betts <jasen@xnet.co.nz>
To: pgsql-sql@postgresql.org
Subject: Re: exclusion constraint for ranges of IP
Date: 22 Aug 2011 11:37:24 GMT
Message-ID: <j2tf1k$b0u$1@reversiblemaps.ath.cx> (raw)
References: <CAF36091-203E-4C10-AA53-7D9087114D35@unicell.co.il>

On 2011-08-21, Herouth Maoz <herouth@unicell.co.il> wrote:
> Hi,
>
> I'm designing a new database. One of the table contains allowed IP ranges for a customer (Fields: customer_id, from_ip, to_ip) which is intended to check - if  an incoming connection's originating IP number falls within the range, it is identified as a particular customer.
>
> Naturally, I'd like to have constraints on the table that prevent entering of ip ranges that overlap. Is there a way to do that with exclusion constraints? Or do I have to define a new type for this?
>
> Herouth

if you can use CIDR instead of ranges it should be relatively simple 

-- 
⚂⚃ 100% natural




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