RE: selection with multiple keys

Subject: RE: selection with multiple keys
From: Kay Michael <Michael.Kay@xxxxxxx>
Date: Fri, 21 Jan 2000 11:35:37 -0000
> I've found keys, defined with xsl:key and selected with the key() function
> real useful. However I'm having problems selecting using multiple keys.
> Defining the keys works fine. But I can only select them one 
> at a time. 
> Next I tried
> <xsl:apply-templates select="key('PrID', 'key1')|key('PrID', 'key2')"/>
> and suprisingly no nodesets are selected, even though both 
> would be selected on their own.
This should work, assuming its actually the union that you want. Try it on a
different product to see if you get the same result.

Getting the intersection (nodes that satisfy both keys) is harder. SAXON and
XT both have an intersection() extension function which is useful for this
Mike Kay

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