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Re: Re: Re: Storing XML in PostgreSQL

From: Bruce Momjian <pgman(at)candle(dot)pha(dot)pa(dot)us>
To: John Gray <jgray(at)beansindustry(dot)co(dot)uk>
Cc: pgsql-hackers(at)postgresql(dot)org
Subject: Re: Re: Re: Storing XML in PostgreSQL
Date: 2001-07-26 21:28:55
Message-ID: 200107262128.f6QLSuW05171@candle.pha.pa.us (view raw or flat)
Thread:
Lists: pgsql-hackers
Should we add this to /contrib?

> I've packaged up what I've done so far and you can find it at
> http://www.cabbage.uklinux.net/pgxml.tar.gz
> 
> The TODO file included indicates what still remains to be done (a lot!).
> 
> In particular, it would be good to implement more of the XPath grammar.
> However, once we get into the realm of more complex paths there becomes a
> question about optimisation of XPath selection. If the documents are
> pre-parsed, then XPath query elements can be rewritten as SQL queries and
> you get the optimisation of the planner on your side.
> 
> I'd like to stick with the current solution if possible, because I think
> it delivers a very simple interface to the user and is (code-wise) also
> very straightforward. Maybe less efficient queries are a penalty worth paying?
> 
> Any thoughts?
> 
> Regards
> 
> John
> 
> 
> ---------------------------(end of broadcast)---------------------------
> TIP 4: Don't 'kill -9' the postmaster
> 

-- 
  Bruce Momjian                        |  http://candle.pha.pa.us
  pgman(at)candle(dot)pha(dot)pa(dot)us               |  (610) 853-3000
  +  If your life is a hard drive,     |  830 Blythe Avenue
  +  Christ can be your backup.        |  Drexel Hill, Pennsylvania 19026

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