This category includes unnecessary purchases such as clothing rentals and storage, dry cleaning, jewelry, and watch repair.
这一类包括非必须的购买如衣服租赁和储存、干洗、珠宝和手表维修。
As in the last example, we use the fn: distinct-values function to avoid duplicate purchases in the same category.
与前一个示例一样,使用fn: distinct - values函数避免重复出现同一类别中的购买。
Of those purchases, we return the category type stored as an XML attribute: $c/categories/category/@type.
对于这些购买,我们返回存储为 XML 属性的类别类型:$c/categories/category/@type。
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