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<section id="extensions">
<span id="id1"></span><h1>Extensions<a class="headerlink" href="#extensions" title="Link to this heading"></a></h1>
<p>SQLite includes a number of extensions providing additional
functionality. All extensions are disabled by default and you need to
<a class="reference internal" href="install.html#setup-build-flags"><span class="std std-ref">take steps</span></a> to have them available at compilation
time, to enable them and then to use them.</p>
<section id="fts5">
<span id="ext-fts3"></span><h2>FTS5<a class="headerlink" href="#fts5" title="Link to this heading"></a></h2>
<p><a class="reference external" href="https://www.sqlite.org/fts5.html">FTS5</a> is the full text search
extension.</p>
</section>
<section id="icu">
<span id="ext-icu"></span><h2>ICU<a class="headerlink" href="#icu" title="Link to this heading"></a></h2>
<p>The ICU extension provides an <a class="reference external" href="https://en.wikipedia.org/wiki/International_Components_for_Unicode">International Components for Unicode</a>
interface, in particular enabling you do sorting and regular
expressions in a locale aware way. The <a class="reference external" href="https://sqlite.org/src/tree?name=ext/icu">documentation</a>
shows how to use it.</p>
</section>
<section id="rbu">
<span id="ext-rbu"></span><h2>RBU<a class="headerlink" href="#rbu" title="Link to this heading"></a></h2>
<p>Provides <a class="reference external" href="https://www.sqlite.org/rbu.html">resumable bulk update</a> intended for
use with large SQLite databases on low power devices at the edge of a network.</p>
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<span id="ext-rtree"></span><h2>RTree<a class="headerlink" href="#rtree" title="Link to this heading"></a></h2>
<p>The RTree extension provides a <a class="reference external" href="https://en.wikipedia.org/wiki/R-tree">spatial table</a> - see the <a class="reference external" href="https://sqlite.org/rtree.html">documentation</a>. There are no additional APIs and
the <a class="reference external" href="https://sqlite.org/rtree.html">documented SQL</a> works as is.</p>
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