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  <section id="functions-and-operators">
<h1 id="functions--page-root">Functions and operators<a class="headerlink" href="#functions--page-root" title="Link to this heading">#</a></h1>
<p>This section describes the built-in SQL functions and operators supported by
Trino. They allow you to implement complex capabilities and behavior of the
queries executed by Trino operating on the underlying data sources.</p>
<p>Refer to the following sections for further details:</p>
<ul class="simple">
<li><p><a class="reference internal" href="language.html"><span class="doc std std-doc">SQL data types and other general aspects</span></a></p></li>
<li><p><a class="reference internal" href="sql.html"><span class="doc std std-doc">SQL statement and syntax reference</span></a></p></li>
</ul>
<p>In addition, Trino supports implementation of <a class="reference internal" href="develop/functions.html"><span class="doc std std-doc">custom
functions</span></a> or <a class="reference internal" href="develop/table-functions.html"><span class="doc std std-doc">custom table
functions</span></a> provided by a plugin, and creation of
user-defined functions as <a class="reference internal" href="routines.html"><span class="doc std std-doc">SQL routines</span></a>.</p>
<section id="functions-by-name">
<h2 id="functions-by-name">Functions by name<a class="headerlink" href="#functions-by-name" title="Link to this heading">#</a></h2>
<p>If you are looking for a specific function or operator by name use
<a class="reference internal" href="sql/show-functions.html"><span class="doc std std-doc">SHOW FUNCTIONS</span></a>, or refer the to the following resources:</p>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="functions/list.html">List of functions and operators</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/list-by-topic.html">List of functions by topic</a></li>
</ul>
</div>
</section>
<section id="functions-per-topic">
<h2 id="functions-per-topic">Functions per topic<a class="headerlink" href="#functions-per-topic" title="Link to this heading">#</a></h2>
<div class="toctree-wrapper compound">
<ul>
<li class="toctree-l1"><a class="reference internal" href="functions/aggregate.html">Aggregate</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/array.html">Array</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/binary.html">Binary</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/bitwise.html">Bitwise</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/color.html">Color</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/comparison.html">Comparison</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/conditional.html">Conditional</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/conversion.html">Conversion</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/datetime.html">Date and time</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/decimal.html">Decimal</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/geospatial.html">Geospatial</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/hyperloglog.html">HyperLogLog</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/ipaddress.html">IP Address</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/json.html">JSON</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/lambda.html">Lambda</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/logical.html">Logical</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/ml.html">Machine learning</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/map.html">Map</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/math.html">Math</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/qdigest.html">Quantile digest</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/regexp.html">Regular expression</a></li>
<li class="toctree-l1"><a class="reference internal" href="functions/session.html">Session</a></li>
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