QGIS/resources/function_help/tostring-en_US

<h3>tostring function</h3>
Converts a number to string.

<p><h4>Syntax</h4>
     tostring(<i>number</i>)</p>

<p><h4>Arguments</h4>
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<i>number</i> &rarr; is integer or real.  The number to convert to string.</p>

<p><h4>Example</h4>
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     tostring(123) &rarr; '123'</p>