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To: =?iso-8859-1?Q?Domoszlai_L=E1szl=F3?= <dlacko@finit.hu>
Cc: "SQL PostgreSQL (E-mail)" <pgsql-sql@postgresql.org>
Subject: Re: set difference 
In-reply-to: <D6CD29CE4DF67F47A11FB6CF5EBE15D1375753@gedeon.finit.local> 
References: <D6CD29CE4DF67F47A11FB6CF5EBE15D1375753@gedeon.finit.local>
Comments: In-reply-to =?iso-8859-1?Q?Domoszlai_L=E1szl=F3?= <dlacko@finit.hu>
	message dated "Wed, 16 Oct 2002 15:44:42 +0200"
Date: Wed, 16 Oct 2002 09:57:37 -0400
Message-ID: <23900.1034776657@sss.pgh.pa.us>
From: Tom Lane <tgl@sss.pgh.pa.us>
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=?iso-8859-1?Q?Domoszlai_L=E1szl=F3?= <dlacko@finit.hu> writes:
> So, do you think a DIFFERENCE or EXCEPT SYMMETRIC clause will be reasonable 
> feauture for postgresql?

I doubt it; haven't heard a request for it before, and AFAICS there's no
such thing in the SQL spec...

			regards, tom lane