Re: 7.4 Wishlist

Me and Teodor hope to work on contrib/ltree to add support for sort of
xml. Any ideas are welcome !
Regards,
    Oleg
On Fri, 29 Nov 2002, Christopher Kings-Lynne wrote:

> Wow Hannu - your list puts mine to shame!
>
> > "Application server support"
> > ----------------------------
> > * better XML integration
> >
> >   - XML(*) aggregate function returning XML representation of subquery
> >
> >   - XML input/output to/from tables
> >
> >   - XML searchable/indexable in fields)
>
> I've had thoughts about XML too.  Since XML is hierachical, imagine being
> able to index xml using contrib/ltree or something!
>
> ie. We create a new 'xml' column type.
>
> We create a new indexing scheme for it based on ltree & gist.
>
> You index the xml column.
>
> Then you can do sort of XPath queries:
>
> SELECT * FROM requests WHERE xml_xpath('/request/owner/name', datafield) =
> 'Bob';
>
> And it would be indexed.  Imaging being able to pull up all XML documents
> that had certain properties, etc.
>
> MS-SQL has a SELECT ... FOR XML clause, but we could always just create
> function called xml_select() or something now that we can return recordsets.
>
> Chris
>
>
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Regards,    Oleg
_____________________________________________________________
Oleg Bartunov, sci.researcher, hostmaster of AstroNet,
Sternberg Astronomical Institute, Moscow University (Russia)
Internet: oleg@sai.msu.su, http://www.sai.msu.su/~megera/
phone: +007(095)939-16-83, +007(095)939-23-83