Lists: | pgsql-general |
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From: | Thomas Kellerer <spam_eater(at)gmx(dot)net> |
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To: | pgsql-general(at)postgresql(dot)org |
Subject: | XML2 module and xpath_table |
Date: | 2008-05-21 10:05:47 |
Message-ID: | g10s5r$o3q$1@ger.gmane.org |
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Lists: | pgsql-general |
Hi,
I am using xpath_table to convert elements from an XML column to "rows".
Now according to
http://www.postgresql.org/docs/8.3/static/xml2.html
this function will be removed in a future version.
That chapter also claims that the new XML syntax covers the functionality of the xml2 module, but I cannot find a way to return the elements of an XML document as rows (as xpath_table does)
Suppose I have the following content in my xml column:
<team>
<member id="10" name="Arthur Dent"/>
<member id="11" name="Ford Prefect"/>
</team>
I am using a statement similar to this:
select member_id, member_name
from xpath_table('id', 'xml_text', 'xmltest', '/team/member/@id|/team/member/@name', 'true')
as t(id integer, member_id varchar, member_name varchar)
to get the following output
member_id member_name
10 Arthur Dent
11 Ford Prefect
How would I achieve the same without using the deprecated xml2 module?
Thanks in advance
Thomas
From: | Peter Eisentraut <peter_e(at)gmx(dot)net> |
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To: | pgsql-general(at)postgresql(dot)org |
Cc: | Thomas Kellerer <spam_eater(at)gmx(dot)net> |
Subject: | Re: XML2 module and xpath_table |
Date: | 2008-05-24 11:35:27 |
Message-ID: | 200805241335.27917.peter_e@gmx.net |
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Lists: | pgsql-general |
Am Mittwoch, 21. Mai 2008 schrieb Thomas Kellerer:
> How would I achieve the same without using the deprecated xml2 module?
xpath_table is probably the major piece that is not directly covered by the
new system. So until we have a replacement, we probably won't remove the old
module.
From: | Thomas Kellerer <spam_eater(at)gmx(dot)net> |
---|---|
To: | pgsql-general(at)postgresql(dot)org |
Subject: | Re: XML2 module and xpath_table |
Date: | 2008-05-24 14:58:18 |
Message-ID: | g19aea$9dd$1@ger.gmane.org |
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Lists: | pgsql-general |
Peter Eisentraut wrote on 24.05.2008 13:35:
> Am Mittwoch, 21. Mai 2008 schrieb Thomas Kellerer:
>> How would I achieve the same without using the deprecated xml2 module?
>
> xpath_table is probably the major piece that is not directly covered by the
> new system. So until we have a replacement, we probably won't remove the old
> module.
>
Ah, good to know.
Thanks for the answer