[Remove Duplicates via XPath 1.0]

remove-duplicats-xpath.md

If you have a variations XPath like this:

{variations/variant[*]}

<variations>
  <variant>
    <title>V1</title>
    <color>Red</color>
    <SKU>V1RED</SKU>
  </variant>
  <variant>
    <title>V2</title>
    <color>Red</color>
    <SKU>V2RED</SKU>
  </variant>
</variations>

You can remove the duplicate "Red" one like this:

{variants/variant[not(./color=preceding-sibling::variant/color)]}