How to find the max attribute from an XML document using Xpath 1.0

Question

Is there a way to query an XML document to return the maximum of a given attribute using Xpath 1.0 ?

For example is there a way to get the max id ?

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Answer 1

In XPath 2.0, use the max function. To find the book with the highest id, do

/library/book[@id = max(/library/book/@id)]