Remove duplicates from return XQuery
问题 My XQuery is: declare namespace xsd="http://www.w3.org/2001/XMLSchema"; for $schema in xsd:schema for $nodes in $schema//*, $attr in $nodes/xsd:element/@name where fn:contains($attr,'city') return $attr return: name="city" name="city" name="city" name="city" name="city" When I add distinct-values like: declare namespace xsd="http://www.w3.org/2001/XMLSchema"; for $schema in xsd:schema for $nodes in $schema//*, $attr in $nodes/xsd:element/@name where fn:contains($attr,'city') return distinct