Re: XPath and XML support

On Wed, 2006-08-23 at 16:04 -0700, Frank Cohen wrote:
> I'm doing a performance and scalability test project for a PostgreSQL
> user who is working with geospatial data. The data is in GML form.
> For instance:
>
>
> <watch version="9" id="flight" time="2006-08-16T10:16:36.125-07:00">
> <point latitude="7" longitude="55"/>
> <detail>
> <gml:Point xmlns:gml="http://www.opengis.net/gml">
> <gml:coordinates>7.0,9.0</gml:coordinates>
> </gml:Point>
> </detail>
> </watch>
>
>
> I installed PostGIS and it supports Point and coordinates very well.
>
> I an not sure what I should do with the XML content using PostgreSQL?
> For example,
>
> 1) Tom Dyson at http://www.throwingbeans.org/
> postgresql_and_xml_updated.html says "PostgreSQL 8 ships with
> xpath_table to evaluate a set of XPath queries and returns the
> results as a virtual table."
>
> These look like good XPath functions. Are they actually in PSQL
> 8.1.4? I did not find them in the Windows installed version. If not,
> are they recommended?

Look at contrib/xml2. The function xpath_table is in that module. I'm
not familiar enough with windows to tell you how to install it, but
hopefully this gives you a good starting point.

Regards,
Jeff Davis