From: Jim C. Nasby <jnasby@pervasive.com>
To: Philippe Lang <philippe.lang@attiksystem.ch>
Cc: pgsql-sql@postgresql.org
Subject: Re: pgxml & xpath_table
Date: Thu, 8 Jun 2006 18:09:33 -0500
Message-ID: <20060608230932.GN45331@pervasive.com> (raw)
In-Reply-To: <6C0CF58A187DA5479245E0830AF84F421D0DB6@poweredge.attiksystem.ch>
References: <6C0CF58A187DA5479245E0830AF84F421D0DB6@poweredge.attiksystem.ch>
There's a good chance the author isn't on this list. You'd be better off
on pgsql-general, or just emailing the author of pgxml directly.
On Thu, Jun 08, 2006 at 06:00:42PM +0200, Philippe Lang wrote:
> Hi,
>
> I'm playing with the contrib/pgxml library under PG 8.1.4, and I'm not sure if what I found with pgxml is a feature of a bug:
>
> I've got the following table:
>
> --------------------
> CREATE TABLE test
> (
> id int4 NOT NULL,
> xml varchar(200),
> CONSTRAINT pk PRIMARY KEY (id)
> )
> WITHOUT OIDS;
>
> INSERT INTO test VALUES (1, '<doc num="C1"><line num="L1"><a>1</a><b>2</b><c>3</c></line><line num="L2"><a>11</a><b>22</b><c>33</c></line></doc>');
>
> INSERT INTO test VALUES (2, '<doc num="C2"><line num="L1"><a>111</a><b>222</b><c>333</c></line><line num="L2"><a>111</a><b>222</b><c>333</c></line></doc>');
> --------------------
>
>
> If I launch this query:
>
> --------------------
> select * from
>
> xpath_table('id','xml','test', '/doc/@num|/doc/line/@num|/doc/line/a|/doc/line/b|/doc/line/c','1=1') AS t(id int4, doc_num varchar(10), line_num varchar(10), val1 int4, val2 int4, val3 int4)
>
> where id = 1
>
> order by doc_num, line_num
> --------------------
>
> I get:
>
> --------------------
> id doc_num line_num val1 val2 val3
> 1 C1 L1 1 2 3
> 1 L2 11 22 33
> --------------------
>
> I was expecting doc_num would receive twice the C1 value, just like with a normal sql join.
>
> Regards,
>
> ----------------------------------
> Philippe Lang, Ing. Dipl. EPFL
> Attik System
> rte de la Fonderie 2
> 1700 Fribourg
> Switzerland
> http://www.attiksystem.ch
>
> Tel: +41 (26) 422 13 75
> Fax: +41 (26) 422 13 76
--
Jim C. Nasby, Sr. Engineering Consultant jnasby@pervasive.com
Pervasive Software http://pervasive.com work: 512-231-6117
vcard: http://jim.nasby.net/pervasive.vcf cell: 512-569-9461
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To: pgsql-sql@postgresql.org
Cc: jnasby@pervasive.com, philippe.lang@attiksystem.ch
Subject: Re: pgxml & xpath_table
In-Reply-To: <20060608230932.GN45331@pervasive.com>
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