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Subject: bug#6366: join can't join on numeric fields
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Hi,
Ideally join should be able to handle files sorted in any order
that sort provides, but as a bare minimum it should at least
be able to join files sorted on numeric fields.
The attached simple patch provides -n, --numeric-sort
options to this effect.
--
Alex
--0016e6dd9902e3d8d2048869d036
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Content-Disposition: inline Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 X-Mailer: MIME-tools 5.427 (Entity 5.427) Content-Type: text/plain; charset=utf-8 X-Loop: help-debbugs@HIDDEN From: help-debbugs@HIDDEN (GNU bug Tracking System) To: Alex Shinn <alexshinn@HIDDEN> Subject: bug#6366: Acknowledgement (join can't join on numeric fields) Message-ID: <handler.6366.B.127588821812860.ack <at> debbugs.gnu.org> References: <AANLkTikFbKLKbHb8li_oqyRWLCYLAxFFhQwOuT1ll5RU@HIDDEN> X-Gnu-PR-Message: ack 6366 X-Gnu-PR-Package: coreutils Reply-To: 6366 <at> debbugs.gnu.org Date: Mon, 07 Jun 2010 05:24:02 +0000 Thank you for filing a new bug report with GNU. This is an automatically generated reply to let you know your message has been received. Your message is being forwarded to the package maintainers and other interested parties for their attention; they will reply in due course. Your message has been sent to the package maintainer(s): bug-coreutils@HIDDEN If you wish to submit further information on this problem, please send it to 6366 <at> debbugs.gnu.org. Please do not send mail to help-debbugs@HIDDEN unless you wish to report a problem with the Bug-tracking system. --=20 6366: http://debbugs.gnu.org/cgi/bugreport.cgi?bug=3D6366 GNU Bug Tracking System Contact help-debbugs@HIDDEN with problems
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Subject: bug#6366: join can't join on numeric fields
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On 07/06/10 06:19, Alex Shinn wrote:
> Hi,
>
> Ideally join should be able to handle files sorted in any order
> that sort provides, but as a bare minimum it should at least
> be able to join files sorted on numeric fields.
Well if there were no aliases in the numbers, you could always
sort the output numerically after the join if it was important.
However if you wanted to join "01" and "1" then your patch is required.
Are numeric aliases common enough to warrant this? I think so.
> The attached simple patch provides -n, --numeric-sort
> options to this effect.
I'd use -g, --general-numeric to correspond with `sort`.
cheers,
P�draig.
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Subject: bug#6366: join can't join on numeric fields
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2010/6/8 P=E1draig Brady <P@HIDDEN>:
> On 07/06/10 06:19, Alex Shinn wrote:
>>
>> Ideally join should be able to handle files sorted in any order
>> that sort provides, but as a bare minimum it should at least
>> be able to join files sorted on numeric fields.
>
> Well if there were no aliases in the numbers, you could always
> sort the output numerically after the join if it was important.
By first sorting lexicographically, you mean?
In the use case I had, the data was already sorted
numerically. So whenever I want to join two files,
currently I have to do:
sort file1 > file1.tmp
sort file2 > file2.tmp
join file1.tmp file2.tmp | sort -n > out
rm -f file1.tmp file2.tmp
instead of just
join -n file1 file2 > out
In the small tools philosophy you want to avoid adding
redundancy, but in this case join isn't doing the same
thing as sort, it's just working with it better. Not to mention
the fact that sort is an expensive operation to have to
perform multiple times, not just an extra O(n) filter
to throw in the middle of a pipeline.
> However if you wanted to join "01" and "1" then your patch is required.
> Are numeric aliases common enough to warrant this? I think so.
Leading zeros may not be so common, but don't forget
"1.0" and "1" or "1e2" and "100" and "100.0", etc.
> I'd use -g, --general-numeric to correspond with `sort`.
Yes, that's probably better.
--=20
Alex
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Subject: bug#6366: join can't join on numeric fields
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Alex Shinn wrote:
> 2010/6/8 P=C3=A1draig Brady <P@HIDDEN>:
>> On 07/06/10 06:19, Alex Shinn wrote:
>>>
>>> Ideally join should be able to handle files sorted in any order
>>> that sort provides, but as a bare minimum it should at least
>>> be able to join files sorted on numeric fields.
>>
>> Well if there were no aliases in the numbers, you could always
>> sort the output numerically after the join if it was important.
>
> By first sorting lexicographically, you mean?
> In the use case I had, the data was already sorted
> numerically. So whenever I want to join two files,
> currently I have to do:
>
> sort file1 > file1.tmp
> sort file2 > file2.tmp
> join file1.tmp file2.tmp | sort -n > out
> rm -f file1.tmp file2.tmp
>
> instead of just
>
> join -n file1 file2 > out
>
> In the small tools philosophy you want to avoid adding
> redundancy, but in this case join isn't doing the same
> thing as sort, it's just working with it better. Not to mention
> the fact that sort is an expensive operation to have to
> perform multiple times, not just an extra O(n) filter
> to throw in the middle of a pipeline.
>
>> However if you wanted to join "01" and "1" then your patch is required.
>> Are numeric aliases common enough to warrant this? I think so.
>
> Leading zeros may not be so common, but don't forget
> "1.0" and "1" or "1e2" and "100" and "100.0", etc.
>
>> I'd use -g, --general-numeric to correspond with `sort`.
>
> Yes, that's probably better.
There may be a fly in the ointment.
When comparing floating point numbers how would join measure equality?
Should it consider 1.000000000000001e2 to be equal to 100.0 ?
What if the maximum precision available does not
allow us to distinguish those two values?
What about -0 and 0? (with IEEE 754, they'll compare equal)
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On Wed, Jun 9, 2010 at 3:56 PM, Jim Meyering <jim@HIDDEN> wrote:
>
> When comparing floating point numbers how would join measure equality?
> Should it consider 1.000000000000001e2 to be equal to 100.0 ?
> What if the maximum precision available does not
> allow us to distinguish those two values?
Indeed, that's why you generally don't use floating
point numbers as database keys.
We could either restrict the numbers to integers,
or continue to allow floats with a note to the effect
that float precision is machine-specific. Personally
I have no need for floats so am happy with the former.
--
Alex
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On 06/08/2010 11:56 PM, Jim Meyering wrote:
> There may be a fly in the ointment.
>
> When comparing floating point numbers how would join measure equality?
The point is that "join" should be compatible with "sort".
Any option that "sort" has to compare fields,
is an option that "join" should also have.
The same code should be used for both "join" and "sort",
to do comparison. So, if "sort" has an option to do
IEEE-754 comparison in a certain way, "join" should
have the same option.
Arguably "uniq" should have the same set of options,
when checking whether two lines are equal, but I'd
say that's lower priority.
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From: Drew Frank <ajfrank@HIDDEN>
Date: Tue, 20 Mar 2012 22:34:38 -0700
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Hi,
I've attached a patch that implements both "numeric sort" (-n) and "general
numeric sort" (-g).. I copied the relevant comparison code from sort.c to
ensure consistent behavior. Should these functions be extracted and put in
a shared header file, or is it okay to duplicate the code?
In terms of testing, I confirmed that the code correctly deals with
different single-byte thousand separators on my local machine, but I wasn't
sure how to exercise that in the test suite since I can't rely on everyone
having a particular locale available. How should that be handled?
I also updated the relevant docs.
Thanks,
Drew
P.S. I sent a previous version of the patch to the wrong address and
accidentally initiated a new bug thread (#10924). This patch supersedes the
previous.
--e89a8f83a645acfaf304bbba26a3
Content-Type: text/html; charset=ISO-8859-1
Content-Transfer-Encoding: quoted-printable
Hi,<br><br>I've attached a patch that implements both "numeric sor=
t" (-n) and "general numeric sort" (-g).. I copied the relev=
ant comparison code from sort.c to ensure consistent behavior. Should these=
functions be extracted and put in a shared header file, or is it okay to d=
uplicate the code?<br>
<br>In terms of testing, I confirmed that the code correctly deals with dif=
ferent single-byte thousand separators on my local machine, but I wasn'=
t sure how to exercise that in the test suite since I can't rely on eve=
ryone having a particular locale available. How should that be handled?<br>
<br>I also updated the relevant docs.<br>
<br>Thanks,<br>Drew<br><br>P.S. I sent a previous version of the patch to t=
he wrong address and accidentally initiated a new bug thread (#10924). This=
patch supersedes the previous.<br>
--e89a8f83a645acfaf304bbba26a3--
--e89a8f83a645acfaf804bbba26a5
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X-Loop: help-debbugs@HIDDEN
Subject: bug#6366: comm: use numeric sort (optionally)
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On 08/22/2012 09:17 PM, Sam Steingold wrote:
> Hi,
> I have a file of numbers (integers IDs) which are sorted numerically,
> but comm complains that they are not.
> I suggest that comm accept "-n" option (like sort) to use numeric sort.
> Thanks.
Yes.
comm, join, uniq really should support the same field selection
and comparision flags as sort.
There are already bugs for that:
http://bugs.gnu.org/5832
http://bugs.gnu.org/6366
For reference, the following examples show
expected an unexpected behavior respectively:
$ comm --nocheck <(printf "%s\n" a b c j k) <(printf "%s\n" a b d e j)
a
b
c
d
e
j
k
$ comm --nocheck <(printf "%s\n" 1 2 3 10 11) <(printf "%s\n" 1 2 5 6 10)
1
2
3
10
11
5
6
10
cheers,
P=E1draig.
Received: (at control) by debbugs.gnu.org; 23 Aug 2012 08:53:49 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Thu Aug 23 04:53:49 2012 Received: from localhost ([127.0.0.1]:44480 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1T4TAi-0001r7-Gz for submit <at> debbugs.gnu.org; Thu, 23 Aug 2012 04:53:48 -0400 Received: from mx1.redhat.com ([209.132.183.28]:19603) by debbugs.gnu.org with esmtp (Exim 4.72) (envelope-from <P@HIDDEN>) id 1T4TAg-0001r0-Fj for control <at> debbugs.gnu.org; Thu, 23 Aug 2012 04:53:47 -0400 Received: from int-mx01.intmail.prod.int.phx2.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) by mx1.redhat.com (8.14.4/8.14.4) with ESMTP id q7N8rGx9024627 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=OK) for <control <at> debbugs.gnu.org>; Thu, 23 Aug 2012 04:53:16 -0400 Received: from [10.36.116.65] (ovpn-116-65.ams2.redhat.com [10.36.116.65]) by int-mx01.intmail.prod.int.phx2.redhat.com (8.13.8/8.13.8) with ESMTP id q7N8rErN009437 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for <control <at> debbugs.gnu.org>; Thu, 23 Aug 2012 04:53:16 -0400 Message-ID: <5035EF7A.1060700@HIDDEN> Date: Thu, 23 Aug 2012 09:53:14 +0100 From: =?ISO-8859-1?Q?P=E1draig_Brady?= <P@HIDDEN> User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:6.0) Gecko/20110816 Thunderbird/6.0 MIME-Version: 1.0 To: control <at> debbugs.gnu.org Subject: bug#12264: join command References: <CAF=LnqwPgd73xs8LvWXUyV1XaM2Embkc9zioAXT-LYwZaGKSbg@HIDDEN> In-Reply-To: <CAF=LnqwPgd73xs8LvWXUyV1XaM2Embkc9zioAXT-LYwZaGKSbg@HIDDEN> X-Enigmail-Version: 1.3.2 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Scanned-By: MIMEDefang 2.67 on 10.5.11.11 X-Spam-Score: -6.9 (------) X-Debbugs-Envelope-To: control X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <http://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <http://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <http://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Sender: debbugs-submit-bounces <at> debbugs.gnu.org Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org X-Spam-Score: -6.9 (------) forcemerge 12264 6366 stop
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Subject: bug#6366: comm: use numeric sort (optionally)
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References: <87sjbeisvv.fsf@HIDDEN> <50355695.2030201@HIDDEN>
From: Assaf Gordon <assafgordon@HIDDEN>
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severity 6366 wishlist
stop
(triaging old bugs)
Hello,
On 22/08/12 04:00 PM, Pádraig Brady wrote:
>
> On 08/22/2012 09:17 PM, Sam Steingold wrote:
>> I have a file of numbers (integers IDs) which are sorted numerically,
>> but comm complains that they are not.
>> I suggest that comm accept "-n" option (like sort) to use numeric sort.
>> Thanks.
>
> Yes.
> comm, join, uniq really should support the same field selection
> and comparision flags as sort.
>
> There are already bugs for that:
> http://bugs.gnu.org/5832
> http://bugs.gnu.org/6366
There is an on-going (though somewhat dormant) effort to
consolidate the key comparison of uniq/join/sort into one common
module:
https://lists.gnu.org/r/coreutils/2013-02/msg00087.html
https://lists.gnu.org/r/coreutils/2016-04/msg00063.html
As such, I'm marking this as a wishlist item, and hopefully we'll get
to it sooner or later...
regards,
- assaf
Received: (at control) by debbugs.gnu.org; 9 Oct 2018 20:19:14 +0000 From debbugs-submit-bounces <at> debbugs.gnu.org Tue Oct 09 16:19:14 2018 Received: from localhost ([127.0.0.1]:42594 helo=debbugs.gnu.org) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <debbugs-submit-bounces <at> debbugs.gnu.org>) id 1g9yTK-00027j-JU for submit <at> debbugs.gnu.org; Tue, 09 Oct 2018 16:19:14 -0400 Received: from mail-it1-f171.google.com ([209.85.166.171]:54237) by debbugs.gnu.org with esmtp (Exim 4.84_2) (envelope-from <assafgordon@HIDDEN>) id 1g9yTJ-00027T-FV; Tue, 09 Oct 2018 16:19:13 -0400 Received: by mail-it1-f171.google.com with SMTP id q70-v6so4726298itb.3; Tue, 09 Oct 2018 13:19:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=iamIcN/LH25OyYYrSviMeEYdVcKQNwIqZATB8YbsbFc=; b=pOD44LRxsQwF95w+fYXzEZCDrFQTGV1IR1FeLwrCYNsafonTYr/cOfpQErZqnN6hu+ lEvBj7PNFojlWqY8G/TKBnMuDa2/s7SdtGt4PFAU7xQvtlB1GLM+WpxyKaIuff7BC8zj oWy6R92lotktbYD101fjYDmQDUPM/7WZPt8bJyPSq0HB1z/bVilOsrx6+Ib33iSFSab/ gbNUiSUcAPPIlktPQm7038lKW+6y2XazxvgkTV7gIDHVDUXD4G5GMU8yz3rG1NW9Q0kt mHx94Nbp6Te1r/m4XeisiZYyx3e6aU1lppaYm+P1VdfD5w50Pgl5kJvazcVNvKz0JQBp 0rJA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=iamIcN/LH25OyYYrSviMeEYdVcKQNwIqZATB8YbsbFc=; b=Cpj4v7FdLTzl0SCCbQqAXKWFhwb/QiCe0GJdTU+QcJF1iZjUcFtHPxqTfNar/N/aMK 5iEdjEnqHYvc/HG9eM4LSqBKBhPnsjcE9GD6McyArnUhQLpAzllIFIcGJVxmtuHQK7ug r3FfxW9+JxBUypsGY4PBaGDaodYVaAZiU26nhD/nCNMVbBTm2+bObD1YEluQ3EsHt7mn tHBc5rmRFoFQ572R52onhGDFDKGti5fWGEIsgfUNWuK7Yo8KHnVYgMXXgCiRNKbNfjZK QIxrvxXGj6hsdtvHeou3typHjIvGNlvtdQ8ZsQlStvWzHbKnSVkneZQdkv98G3hfRon7 2HCQ== X-Gm-Message-State: ABuFfohZNqhkhJ43B/1Gv+T+BpTA32DbYtJagNyI+6tSeJGwdk9nDRnr zioZZp2Ct8Sx/G57lZ4iC8dG7Xanm5A= X-Google-Smtp-Source: ACcGV60uHp2COComao45KnpHpjgl3cnc98G3+YJk/SDcQOCBOnsEUK8dDhOZqB1e7B9a2UIwCxyxjA== X-Received: by 2002:a24:95c4:: with SMTP id m187-v6mr3028073itd.83.1539116347354; Tue, 09 Oct 2018 13:19:07 -0700 (PDT) Received: from tomato.housegordon.com (moose.housegordon.com. [184.68.105.38]) by smtp.googlemail.com with ESMTPSA id j75-v6sm6652840itj.33.2018.10.09.13.19.05 (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 09 Oct 2018 13:19:05 -0700 (PDT) Subject: Re: bug#6366: comm: use numeric sort (optionally) To: =?UTF-8?Q?P=c3=a1draig_Brady?= <P@HIDDEN> References: <87sjbeisvv.fsf@HIDDEN> <50355695.2030201@HIDDEN> From: Assaf Gordon <assafgordon@HIDDEN> Message-ID: <42953a1d-3f9a-329b-c0bd-6fa37be379af@HIDDEN> Date: Tue, 9 Oct 2018 14:19:04 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.9.1 MIME-Version: 1.0 In-Reply-To: <50355695.2030201@HIDDEN> Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-Spam-Score: -0.0 (/) X-Debbugs-Envelope-To: control Cc: 6366 <at> debbugs.gnu.org X-BeenThere: debbugs-submit <at> debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: <debbugs-submit.debbugs.gnu.org> List-Unsubscribe: <https://debbugs.gnu.org/cgi-bin/mailman/options/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=unsubscribe> List-Archive: <https://debbugs.gnu.org/cgi-bin/mailman/private/debbugs-submit/> List-Post: <mailto:debbugs-submit <at> debbugs.gnu.org> List-Help: <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=help> List-Subscribe: <https://debbugs.gnu.org/cgi-bin/mailman/listinfo/debbugs-submit>, <mailto:debbugs-submit-request <at> debbugs.gnu.org?subject=subscribe> Errors-To: debbugs-submit-bounces <at> debbugs.gnu.org Sender: "Debbugs-submit" <debbugs-submit-bounces <at> debbugs.gnu.org> X-Spam-Score: -1.0 (-) severity 6366 wishlist stop (triaging old bugs) Hello, On 22/08/12 04:00 PM, Pádraig Brady wrote: > > On 08/22/2012 09:17 PM, Sam Steingold wrote: >> I have a file of numbers (integers IDs) which are sorted numerically, >> but comm complains that they are not. >> I suggest that comm accept "-n" option (like sort) to use numeric sort. >> Thanks. > > Yes. > comm, join, uniq really should support the same field selection > and comparision flags as sort. > > There are already bugs for that: > http://bugs.gnu.org/5832 > http://bugs.gnu.org/6366 There is an on-going (though somewhat dormant) effort to consolidate the key comparison of uniq/join/sort into one common module: https://lists.gnu.org/r/coreutils/2013-02/msg00087.html https://lists.gnu.org/r/coreutils/2016-04/msg00063.html As such, I'm marking this as a wishlist item, and hopefully we'll get to it sooner or later... regards, - assaf
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