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From: Mike Mascari <mascarm@mascari.com>
To: Ed Loehr <eloehr@austin.rr.com>
Cc: Joseph Shraibman <jks@p1.selectacast.net>
Cc: pgsql-interfaces@postgreSQL.org <pgsql-interfaces@postgreSQL.org>
Subject: Re: [INTERFACES] selectecting not null varchars.
Date: Thu, 24 Feb 2000 10:50:30 -0500
Message-ID: <38B55346.9156B92D@mascari.com> (raw)
References: <38B58AAE.B28DD6CB@selectacast.net>
	<38B58ED8.FDE3E3C7@austin.rr.com>

Ed Loehr wrote:
> 
> Joseph Shraibman wrote:
> >
> >  select * from directory where h != null  ;
> > ... gets you this:
> > ERROR:  parser: parse error at or near ";"
> 
> Postgresql's SQL "not equal" operator is "<>"...Try this:
> 
>         select * from directory where h <> null;
> 
> Cheers,
> Ed Loehr
> 

Does that work? I remember when the equality with NULL was added
because of non-compliant queries being generated from Access. I
didn't know inequality was implemented as well. Formal SQL is:

SELECT * FROM directory WHERE h IS NOT NULL;

Mike Mascari

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