<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>
