XQuery TutorialLesson 67Free preview

XQuery Example

This lesson is part of XML · All levels

Summary

The XQuery query works by selecting nodes from XML documents using XPath expressions, e.g. doc("cd.xml")/catalog/cd) and then filtering with a predicate. The result of the query is a sequence node or value that can be directly rendered. This basic example-example shows how to pull the title, price, or entire CD element.

Key points

Doc() opens the XML document as a query input
A line like /catalog/cd selects a set of elements (sequence)
The predicate [price>10] filters the node based on the condition
The result is a sequence, it can be a node, a number, or a text.
Expressions can be written inline or stored as a file .xq

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