Combining Node Sequences

except.xqy

xquery version "3.1";

let $old-words :=
  <stopwords>
    <word>the</word>
    <word>a</word>
    <word>in</word>
    <word>of</word>
    <word>as</word>
  </stopwords>
let $new-words := 
  element stopwords {
    $old-words/word except $old-words/word[4]
  }
return $new-words

operators.xqy

xquery version "3.1";

(: union, intersect, except :)

let $seq := (<name>Arnold</name>, <name>Betty</name>, <name>Claire</name>)
let $seq1 := ($seq[1], $seq[2])
let $seq2 := ($seq[1], $seq[2])
let $seq3 := ($seq[2], $seq[3])
return $seq1 except $seq3