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(A/@name | B/@name)[1]
But, as Mukul suggests, testing the string value might be a wise thing. E.g. when string-length(A/@name) > 0 then A/@name otherwise B/@name... Cheers Ranjan K. Baisak wrote: Both A and B has attribute @name with mutual exclusion i.e. if A has attribute @name then B does not have and vice versa.
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