[xquery-talk] FLOWR vs Xpath axis syntax - Performance

David Lee dlee at calldei.com
Tue Jul 31 09:29:56 PDT 2012

IMHO ... performance characteristics are implementation dependent.  I don't believe one can make a statement that a particular syntax or feature is in general more performant in XQuery in general.  It depends on the implementation and often a lot more than that such as the particular document set, indexing, document size, caching, machnine configurations, system variables enabled etc.

David A. Lee
dlee at calldei.com

> -----Original Message-----
> From: talk-bounces at x-query.com [mailto:talk-bounces at x-query.com] On
> Behalf Of Ihe Onwuka
> Sent: Tuesday, July 31, 2012 12:25 PM
> To: talk at x-query.com
> Subject: [xquery-talk] FLOWR vs Xpath axis syntax - Performance
> I vaguely remember reading somewhere that a preference for what I
> would call axis notation has performance advantages over the
> equivalent FLOWR code.
> I certainly recall reading that  XPath predicates perform better than
> where clauses in FLOWR.
> I would appreciate clarification, confirmation or correction and
> general enllightenment.
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