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From: Valerio Santinelli <tanis@mediacom.it>
To: Thomas G. Lockhart <lockhart@alumni.caltech.edu>
Cc: jose' soares <sferac@bo.nettuno.it>
Cc: 'pgsql-interfaces@postgreSQL.org' <pgsql-interfaces@postgreSQL.org>
Cc: Michael Davis <michael.davis@prevuenet.com>
Subject: Re: [INTERFACES] Foreign Keys
Date: Thu, 04 Mar 1999 20:26:13 -0100
Message-ID: <36DF1694.DAF0907B@mediacom.it> (raw)
References: <93C04F1F5173D211A27900105AA8FCFC145219@lambic.prevuenet.com>
	<36DC61D6.6DF4E87D@insightdist.com>
	<36DD1FD2.11561615@mediacom.it>
	<36DD3669.3A62A57F@bo.nettuno.it>
	<36DD6CEC.967BBD0C@bo.nettuno.it>
	<36DE7632.F0CFF0AC@mediacom.it>
	<36DE9081.529561FC@alumni.caltech.edu>



"Thomas G. Lockhart" wrote:

> > Thanks. That was what i was looking for. It's been real useful!
> > I also put this other line to handle the inverse case (NULL = field)
> >
> >  | NULL_P '=' a_expr
> >     { $$ = makeA_Expr(ISNULL, NULL, $3, NULL); }
>
> This leads to a shift/reduce conflict in yacc. I've been working on this
> a bit, and have modified gram.y (so far just in my local copy) to allow
> Jose's syntax and to allow the same syntax in a constraint declaration.
> But this variant may be tougher to do correctly...

I don't exactly know what you mean, but it's working fine here.

--

C'ya!

Valerio Santinelli a.k.a. TANiS
[tanis@mediacom.it]+:+[http://www.mediacom.it/~tanis]





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