RE: Benefits of using xsl:key
> That the optimization option in Saxon EE often makes it not > necessary to use xsl:key Correct. > but that in many situations you can > obtain even greater performance by fine tuning the match > attribute by hand using xsl:key? I'd say "some situations". Particularly those situations where keys are being used for Muenchian grouping, duplicates elimination etc. Even better is to rewrite such applications to use xsl:for-each-group or distinct-values(). Regards, Michael Kay http://www.saxonica.com/ http://twitter.com/michaelhkay
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