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RE: Nodeset equality, inequality, and relational operations in XP ath
Subject: RE: Nodeset equality, inequality, and relational operations in XP ath From: Kay Michael <Michael.Kay@xxxxxxx> Date: Mon, 7 Feb 2000 09:23:18 -0000 |
> The definition of nodeset equality, inequality, and > relational operations in XPath seems more than a little unusual to me. You are right, but we have to live with it. I think they went out of their way to avoid introducing existential quantifiers and range variables ("there exists x in X such that", etc), presumably with the aim of keeping simple things simple. I have seen many other query languages attempt to do this and it always leads to some expressions having counter-intuitive semantics. I remember a debate about whether SQL should do this and fortunately it was thrown out on these grounds. Mike Kay XSL-List info and archive: http://www.mulberrytech.com/xsl/xsl-list
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