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Function — groonga v3.0.5 documentation</title> <link rel="stylesheet" href="../_static/groonga.css" type="text/css" /> <link rel="stylesheet" href="../_static/pygments.css" type="text/css" /> <script type="text/javascript"> var DOCUMENTATION_OPTIONS = { URL_ROOT: '../', VERSION: '3.0.5', COLLAPSE_INDEX: false, FILE_SUFFIX: '.html', HAS_SOURCE: true }; </script> <script type="text/javascript" src="../_static/jquery.js"></script> <script type="text/javascript" src="../_static/underscore.js"></script> <script type="text/javascript" src="../_static/doctools.js"></script> <link rel="shortcut icon" href="../_static/favicon.ico"/> <link rel="top" title="groonga v3.0.5 documentation" href="../index.html" /> <link rel="up" title="8. リファレンスマニュアル" href="../reference.html" /> <link rel="next" title="8.11.1. edit_distance" href="functions/edit_distance.html" /> <link rel="prev" title="8.10.2. Script syntax" href="grn_expr/script_syntax.html" /> </head> <body> <div class="header"> <h1 class="title"> <a id="top-link" href="../index.html"> <span class="project">groonga</span> <span class="separator">-</span> <span class="description">An open-source fulltext search engine and column store.</span> </a> </h1> <div class="other-language-links"> <ul> <li><a href="../../../ja/html/reference/function.html"><img src="../_static/jp.png" alt="日本語">日本語版はこちら</a></li> </ul> </div> </div> <div class="related"> <h3>Navigation</h3> <ul> <li class="right" style="margin-right: 10px"> <a href="../genindex.html" title="General Index" accesskey="I">index</a></li> <li class="right" > <a href="functions/edit_distance.html" title="8.11.1. edit_distance" accesskey="N">next</a> |</li> <li class="right" > <a href="grn_expr/script_syntax.html" title="8.10.2. Script syntax" accesskey="P">previous</a> |</li> <li><a href="../index.html">groonga v3.0.5 documentation</a> »</li> <li><a href="../reference.html" accesskey="U">8. リファレンスマニュアル</a> »</li> </ul> </div> <div class="document"> <div class="documentwrapper"> <div class="bodywrapper"> <div class="body"> <div class="section" id="function"> <h1>8.11. Function<a class="headerlink" href="#function" title="Permalink to this headline">¶</a></h1> <p>Function can be used in some commands. For example, you can use function in <tt class="docutils literal"><span class="pre">--filter</span></tt>, <tt class="docutils literal"><span class="pre">--scorer</span></tt> and <tt class="docutils literal"><span class="pre">output_columns</span></tt> options of <a class="reference internal" href="commands/select.html"><em>select</em></a>.</p> <p>This section describes about function and built-in functions.</p> <p>TODO: Add documentations about function.</p> <div class="toctree-wrapper compound"> <ul> <li class="toctree-l1"><a class="reference internal" href="functions/edit_distance.html">8.11.1. edit_distance</a></li> <li class="toctree-l1"><a class="reference internal" href="functions/geo_distance.html">8.11.2. geo_distance</a></li> <li class="toctree-l1"><a class="reference internal" href="functions/geo_in_circle.html">8.11.3. geo_in_circle</a></li> <li class="toctree-l1"><a class="reference internal" href="functions/geo_in_rectangle.html">8.11.4. geo_in_rectangle</a></li> <li class="toctree-l1"><a class="reference internal" href="functions/html_untag.html">8.11.5. html_untag</a></li> <li class="toctree-l1"><a class="reference internal" href="functions/now.html">8.11.6. now</a></li> <li class="toctree-l1"><a class="reference internal" href="functions/query.html">8.11.7. query</a></li> <li class="toctree-l1"><a class="reference internal" href="functions/rand.html">8.11.8. rand</a></li> <li class="toctree-l1"><a class="reference internal" href="functions/snippet_html.html">8.11.9. snippet_html</a></li> <li class="toctree-l1"><a class="reference internal" href="functions/sub_filter.html">8.11.10. sub_filter</a></li> </ul> </div> </div> </div> </div> </div> <div class="sphinxsidebar"> <div class="sphinxsidebarwrapper"> <h4>Previous topic</h4> <p class="topless"><a href="grn_expr/script_syntax.html" title="previous chapter">8.10.2. 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