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# A XQuery Update query can never return a result. So you can't combine reading queries and updating queries into one query, even if they are separated with a comma.
# Updates of a XQuery Update query are not visible until the whole query is finished. So values generated by subqueries are not usable in the other parts of the query.
# The order of XQuery Update functions in a query is irrelevant. There is a [http://www.w3.org/TR/xquery-update-10/#id-upd-apply-updates specification] which regulates controls the execution order of execution of the update functions.
==New Expressions==
