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<h3>$uuid function</h3>
Generates a Universally Unique Identifier (UUID) for each row using the Qt
<a href='http://qt-project.org/doc/qt-4.8/quuid.html#createUuid'>QUuid::createUuid</a>
method. Each UUID is 38 characters long.
<h4>Syntax</h4>
<pre>$uuid</pre>
<h4>Arguments</h4>
None
<h4>Example</h4>
<pre>$uuid &rarr; {0bd2f60f-f157-4a6d-96af-d4ba4cb366a1}</pre>