xQuery 更新问题 [英] xQuery update question

问题描述

这是我的 xml

<book asin="0201100886"
  created="128135928"
  lastLookupTime="128135928">
  <price>102.00</price>
  <purchaseDate>2005-01-22</purchaseDate>
</book>

<book asin="0122513363" created="128135600" lastLookupTime="128136224">
  <price>50.95</price>
  <purchaseDate>2005-01-22</purchaseDate>
</book>

<book asin="0201441241"
  created="128136896"
  lastLookupTime="128136896">
  <price>108.20</price>
  <purchaseDate>2005-01-22</purchaseDate>
</book>


<book asin="0471250600"
  created="128136896"
  lastLookupTime="128136896">
  <price>107.95</price>
  <purchaseDate>2005-01-22</purchaseDate>
</book>

<book asin="0321193628"
  created="128136896"
  lastLookupTime="128136896">
  <price>112.40</price>
</book>

我需要将所有图书价格更新 0.50 美分.我该怎么做?

I need to update all the books prices by 0.50 cents. How can I do this?

推荐答案

如果您正在寻找使用 XQuery 更新工具的解决方案:

If you are looking for a solution using XQuery Update Facility:

for $p in //price return
replace value of node $p with $p + 0.50

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