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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