Return-Path: Delivered-To: apmail-cassandra-user-archive@www.apache.org Received: (qmail 43568 invoked from network); 1 Feb 2011 21:39:21 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 1 Feb 2011 21:39:21 -0000 Received: (qmail 52822 invoked by uid 500); 1 Feb 2011 21:39:19 -0000 Delivered-To: apmail-cassandra-user-archive@cassandra.apache.org Received: (qmail 52768 invoked by uid 500); 1 Feb 2011 21:39:18 -0000 Mailing-List: contact user-help@cassandra.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: user@cassandra.apache.org Delivered-To: mailing list user@cassandra.apache.org Received: (qmail 52755 invoked by uid 99); 1 Feb 2011 21:39:18 -0000 Received: from nike.apache.org (HELO nike.apache.org) (192.87.106.230) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 01 Feb 2011 21:39:18 +0000 X-ASF-Spam-Status: No, hits=2.2 required=5.0 tests=HTML_MESSAGE,MIME_QP_LONG_LINE,RCVD_IN_DNSWL_NONE,SPF_PASS X-Spam-Check-By: apache.org Received-SPF: pass (nike.apache.org: local policy) Received: from [208.113.200.5] (HELO homiemail-a51.g.dreamhost.com) (208.113.200.5) by apache.org (qpsmtpd/0.29) with ESMTP; Tue, 01 Feb 2011 21:39:11 +0000 Received: from homiemail-a51.g.dreamhost.com (localhost [127.0.0.1]) by homiemail-a51.g.dreamhost.com (Postfix) with ESMTP id 476652E8058 for ; Tue, 1 Feb 2011 13:38:45 -0800 (PST) DomainKey-Signature: a=rsa-sha1; c=nofws; d=thelastpickle.com; h=to:from :subject:date:message-id:content-type:mime-version:in-reply-to; q=dns; s=thelastpickle.com; b=HB2hbLLFvUr5QQVxw5LEiYJqBUBTa3lqW Mvc93VQInBbJu347bBRRASOXJhSwk2mf0W1BZT6pnjf1P9YShoz2zTkWepKnO8lA U6aOvPu2nlO8oxeIVbV2pQnbZjHCPaaj68JAPCbUbqPLgOzwbxAVRvEALy1MUjEj ByF/EKug7w= DKIM-Signature: v=1; a=rsa-sha1; c=relaxed; d=thelastpickle.com; h=to :from:subject:date:message-id:content-type:mime-version: in-reply-to; s=thelastpickle.com; bh=pXFq42WqvevF2jziCPQuaIld6Y8 =; b=LA2GPR3r8ZN+47VM5k3wP5s/arpC+rOH5ALcp/oMF5aGiycgjhxnTjdmSB3 GxR5rYZEShtiMvrXMjWud2+wZ31TusWNx0qP4RhNHL97sIDmeAjNpRPfu46Cr70R U4V53o3QZj+oIASQL3KuYsv3Usn2ieDGlgCcHfBk1HH+ZGR4= Received: from localhost (webms.mac.com [17.148.16.116]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) (Authenticated sender: aaron@thelastpickle.com) by homiemail-a51.g.dreamhost.com (Postfix) with ESMTPSA id 2E8FF2E8057 for ; Tue, 1 Feb 2011 13:38:45 -0800 (PST) To: user@cassandra.apache.org From: Aaron Morton Subject: Re: Get column names without getting the data in them Date: Tue, 01 Feb 2011 21:38:43 GMT X-Mailer: MobileMe Mail (1C3224) Message-id: Content-Type: multipart/alternative; boundary=Apple-Webmail-42--c942700f-98dd-e129-95ff-8bba4b8e2464 MIME-Version: 1.0 In-Reply-To: X-Virus-Checked: Checked by ClamAV on apache.org --Apple-Webmail-42--c942700f-98dd-e129-95ff-8bba4b8e2464 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=ISO-8859-1; format=flowed Not at all.=A0=0A=0AThe question was about retrieving the column name with= out the column value. That is not possible.=A0=0A=0AAaron=0A=0AOn 02 Feb, = 2011,at 10:27 AM, Sasha Dolgy wrote:=0A=0A=0A"Cassandra= column families are schema-less and like SQL tables, they don't have a fi= xed number of columns per row. =A0In the same column family, one row may h= ave 5 columns, and another row, 10,000 columns. Every row can possibly hav= e a different number / set of columns."=0A=0Aare you saying the above is i= ncorrect?=0A-sd=0A=0AOn Tue, Feb 1, 2011 at 9:51 PM, Aaron Morton wrote:=0ANot that I know of.=0A=0AAaron=0A=0A=0A=0AOn 2/= 02/2011, at 6:21 AM, Sasha Dolgy wrote:=0A=0A=0A=0AI as= ked this on the hector list last week.=A0 Its possible but remember, each = row can have a different set of associated columns.=A0=0AOn 1 Feb 2011 18:= 16, "Jeremiah Jordan" wrote:=0A> Is ther= e a way to query for column names or super column names without=0A> also p= ulling down the data they contain? (Besides keeping a second=0A> index) I = don't see an obvious way to do it from the Thrift API, but=0A> maybe I'm m= issing something.=0A> =0A> Thanks!=0A> -Jeremiah=0A> =0A> ________________= ________________=0A> Jeremiah Jordan=0A> Application Developer=0A> Morning= star, Inc.=0A> =0A> Morningstar. Illuminating investing worldwide.=0A> =0A= > +1 312 696-6128 voice=0A> jeremiah.jordan@morningstar.com=0A> =0A> www.m= orningstar.com=0A> =0A> This e-mail contains privileged and confidential i= nformation and is=0A> intended only for the use of the person(s) named abo= ve. Any=0A> dissemination, distribution, or duplication of this communicat= ion=0A> without prior written consent from Morningstar is strictly prohibi= ted.=0A> If you have received this message in error, please contact the se= nder=0A> immediately and delete the materials from any computer.=0A> =0A=0A= =0A=0A-- =0ASasha Dolgy=0Asasha.dolgy@gmail.com=0A --Apple-Webmail-42--c942700f-98dd-e129-95ff-8bba4b8e2464 Content-Type: multipart/related; type="text/html"; boundary=Apple-Webmail-86--c942700f-98dd-e129-95ff-8bba4b8e2464 --Apple-Webmail-86--c942700f-98dd-e129-95ff-8bba4b8e2464 Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=ISO-8859-1;
Not at all. 

The question was about ret= rieving the column name without the column value. That is not possible.&nb= sp;

Aaron

On 02 Feb, 2011,at 10:27 = AM, Sasha Dolgy <sdolgy@gmail.com> wrote:


"Cassandra column fami= lies are schema-less and like SQL tables, they don't have a fixed number o= f columns per row.  In the same column family, one row may have 5 col= umns, and another row, 10,000 columns. Every row can possibly have a diffe= rent number / set of columns."
=0A=0A

are you sayi= ng the above is incorrect?
-sd

On Tue, Feb 1, 2011 at 9:51 PM, Aaron Morton <aaron@thelastpickle.com> wrote:<= br>=0A=0A
Not that I kn= ow of.

Aaron
<= div>
=0A


On 2/02/2011, at 6:21 AM, Sasha= Dolgy <sdolgy@gmail.com> wrote:

<= div>

=0A= =0A

I asked this on the hector list last week.  Its possible b= ut remember, each row can have a different set of associated columns. = ;

=0A
On 1 Feb 2011 18:16, "Jeremiah Jordan"= <JEREM= IAH.JORDAN@morningstar.com> wrote:
=0A=0A> Is there a way to = query for column names or super column names without
=0A> also pulli= ng down the data they contain? (Besides keeping a second
> index) = I don't see an obvious way to do it from the Thrift API, but
> maybe= I'm missing something.
>
> Thanks!
=0A=0A=0A> -Jeremia= h
>
> ________________________________
> Jeremiah Jorda= n
> Application Developer
> Morningstar, Inc.
>
>= Morningstar. Illuminating investing worldwide.
>
=0A=0A=0A> = +1 312 696-6128 voice
> jeremiah.jordan@morningstar.com
>
> <= a href=3D"http://www.morningstar.com" _mce_href=3D"http://www.morningstar.= com">www.morningstar.com
=0A=0A>
> This e-mail = contains privileged and confidential information and is
=0A> intende= d only for the use of the person(s) named above. Any
> dissemination= , distribution, or duplication of this communication
> without prior= written consent from Morningstar is strictly prohibited.
=0A=0A=0A>= If you have received this message in error, please contact the sender
= > immediately and delete the materials from any computer.
>
<= /div>=0A



--
Sasha Dolgy
sasha.dolgy@gmail.com<= br>=0A --Apple-Webmail-86--c942700f-98dd-e129-95ff-8bba4b8e2464-- --Apple-Webmail-42--c942700f-98dd-e129-95ff-8bba4b8e2464--