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120 lines
5.5 KiB
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From owner-pgsql-general@hub.org Fri Oct 9 18:22:09 1998
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Date: Fri, 9 Oct 1998 18:18:00 -0400 (EDT)
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From: Steve Doliov <statsol@statsol.com>
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To: pgsql-general@postgreSQL.org
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Subject: Re: [GENERAL] Making NULLs visible.
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Message-ID: <Pine.GSO.3.96.981009181716.545B-100000@gecko>
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Sender: owner-pgsql-general@postgreSQL.org
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On Fri, 9 Oct 1998, Bruce Momjian wrote:
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> [Charset iso-8859-1 unsupported, filtering to ASCII...]
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> > > Yes, \ always outputs as \\, excepts someone changed it last week, and I
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> > > am requesting a reversal. Do you like the \N if it is unique?
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> >
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> > Well, it's certainly clear, but could be confused with \n (newline). Can we
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> > have \0 instead?
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>
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> Yes, but it is uppercase. \0 looks like an octal number to me, and I
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> think we even output octals sometimes, don't we?
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>
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my first suggestion may have been hare-brained, but why not just make the
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specifics of the output user-configurable. So if the user chooses \0, so
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be it, if the user chooses \N so be it, if the user likes NULL so be it.
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but the option would only have one value per database at any given point
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in time. so database x could use \N on tuesday and NULL on wednesday, but
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database x could never have two references to the characters(s) used to
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represent a null value.
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steve
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From owner-pgsql-general@hub.org Sun Oct 11 17:31:08 1998
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for <pgsql-general@postgreSQL.org>; Sun, 11 Oct 1998 16:28:41 -0400
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Date: Sun, 11 Oct 1998 16:28:41 -0400 (EDT)
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From: Thomas Good <tomg@admin.nrnet.org>
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To: pgsql-general@postgreSQL.org
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Subject: Re: [GENERAL] Making NULLs visible.
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In-Reply-To: <Pine.GSO.3.96.981009181716.545B-100000@gecko>
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Watching all this go by...as a guy who has to move alot of data
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from legacy dbs to postgres, I've gotten used to \N being a null.
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My vote, if I were allowed to cast one, would be to have one null
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and that would be the COPY command null. I have no difficulty
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distinguishing a null from a newline...
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At the pgsql command prompt I would find seeing \N rather reassuring.
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I've seen alot of these little guys.
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---------- Sisters of Charity Medical Center ----------
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Department of Psychiatry
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----
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Thomas Good <tomg@q8.nrnet.org>
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Coordinator, North Richmond C.M.H.C. Information Systems
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75 Vanderbilt Ave, Quarters 8 Phone: 718-354-5528
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Staten Island, NY 10304 Fax: 718-354-5056
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