Is there any possibility to generate random numbers using XQuery? [closed]

问题

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Closed 7 years ago.

I have to generate a series of random numbers using XQuery.I found a set of libraries but those are paid.If anyone can give me a direction it would be much appreciated(preferably code).

回答1:

The standard XQuery languages provides no random function, but many implementations do. Some examples for open source implementations:

• BaseX provides a Random Module
• Zorba has a Random Module, too
• eXist-db has some suitable functions in the Util Module
• MarkLogic provides the xdmp:random() function

As an alternative, most Java implementations of XQuery (such as BaseX, Saxon or Qizx) provide so-called Java bindings in order to evaluate Java code:

declare namespace math = 'java:java.lang.Math';
math:random()

If the implementation support the latest XQuery 3.0 specification, this can also be written as a one-liner:

Q{java:java.lang.Math}random()

来源：https://stackoverflow.com/questions/12086038/is-there-any-possibility-to-generate-random-numbers-using-xquery