Re: exclusion constraint for ranges of IP

On 2011-08-21, Herouth Maoz <herouth(at)unicell(dot)co(dot)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

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