[XSL-LIST Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] RE: Restrictions on pattern for the match attribute of
> The first one was eXist. With that database, using a chain of > predicates was much faster then using a single predicate with > and operators. Obviously, this is a question of using > intermediate result sets or not. eXist has quite a good reputation - I would be rather suprised if it is using intermediate result sets to implement a filter expression, however it is written. I would think it's more likely to be a question of detecting opportunities for using indexes. But I might be wrong, I don't know it that well. Unfortunately it's a truism that optimizers aren't predictable. Michael Kay http://www.saxonica.com/
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