XQuery - group by and count

Question

This is the structure of my XML file -

  James Bond
  Allen Bond
  

        

Answer 1

XQuery 3.0 solution with group by:

{
  for $name in //Name
  let $full :=
    if(not($name/@p)) then concat($name, ' ', $name/@t)
    else concat($name, ' ', $name/@t, ', ', $name/@p)
  group by $full
  return {$full, '-', count($name)}
}

XQuery 1.0 solution with distinct-values($arg):

{
  let $names :=
    for $name in //Name
    return if(not($name/@p)) then concat($name, ' ', $name/@t)
    else concat($name, ' ', $name/@t, ', ', $name/@p)
  for $name in distinct-values($names)
  return {$name, '-', count($names[. eq $name])}
}