Enrico wrote:
> I'm writing a little contrib for postgresql,
> to handle ean barcode datatype.
>
> It contains operators and functions like ISBN datatype,
> and it also contains a check digit function to
> control right or wrong inserts.
>
> Can this code is useful for postgresql community?
>
> Now, I'm testing my code on EAN 13 barcode
> and when it will be ready, I will can send it to you
> if you want.
>
>
This could be a piece of wheel reinvention. Please see
http://pgfoundry.org/projects/gtin/
cheers
andrew