Fwd: help with uniq index (fwd)

can you all help me with this:

> ---------- Forwarded message ----------
> Date: Thu, 23 Jul 1998 12:50:17 -0600 (MDT)
> From: Lorenzo Huerta <lorenzo@nmsu.edu>
> To: pgsql-sql@postgreSQL.org
> Cc: pgsql-general@postgreSQL.org
> Subject: help with uniq index
>
>
> is there a way to create a unique index on a field (in ver 6.3.1
)and also
> have a single non-uniq value in that value, ie the NULL value?
>
>
> Thanks,
>
>
__________________________________________________________________
>      *  Lorenzo J. Huerta
 *
>      *  Programming Assistant
 *
>      *  Computing & Networking Networking Architecture and
Operations *
>      *  New Mexico State University
 *
>      *  phone: (w)(505)646-2582 (h)(505) 521-8699 fax:(505) 646-8139
 *
>      *  e-mail: lorenzo@nmsu.edu
 *
>      *  Web Site: http://web.nmsu.edu/~ljhuerta
 *
>
__________________________________________________________________
>
>
>
>

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