diff options
Diffstat (limited to '')
| -rw-r--r-- | doc/src/sgml/html/spgist-builtin-opclasses.html | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/doc/src/sgml/html/spgist-builtin-opclasses.html b/doc/src/sgml/html/spgist-builtin-opclasses.html new file mode 100644 index 0000000..681435e --- /dev/null +++ b/doc/src/sgml/html/spgist-builtin-opclasses.html @@ -0,0 +1,100 @@ +<?xml version="1.0" encoding="UTF-8" standalone="no"?> +<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>65.2. Built-in Operator Classes</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@lists.postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets V1.79.1" /><link rel="prev" href="spgist-intro.html" title="65.1. Introduction" /><link rel="next" href="spgist-extensibility.html" title="65.3. Extensibility" /></head><body id="docContent" class="container-fluid col-10"><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">65.2. Built-in Operator Classes</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="spgist-intro.html" title="65.1. Introduction">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="spgist.html" title="Chapter 65. SP-GiST Indexes">Up</a></td><th width="60%" align="center">Chapter 65. SP-GiST Indexes</th><td width="10%" align="right"><a accesskey="h" href="index.html" title="PostgreSQL 13.4 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="spgist-extensibility.html" title="65.3. Extensibility">Next</a></td></tr></table><hr></hr></div><div class="sect1" id="SPGIST-BUILTIN-OPCLASSES"><div class="titlepage"><div><div><h2 class="title" style="clear: both">65.2. Built-in Operator Classes</h2></div></div></div><p> + The core <span class="productname">PostgreSQL</span> distribution + includes the <acronym class="acronym">SP-GiST</acronym> operator classes shown in + <a class="xref" href="spgist-builtin-opclasses.html#SPGIST-BUILTIN-OPCLASSES-TABLE" title="Table 65.1. Built-in SP-GiST Operator Classes">Table 65.1</a>. + </p><div class="table" id="SPGIST-BUILTIN-OPCLASSES-TABLE"><p class="title"><strong>Table 65.1. Built-in <acronym class="acronym">SP-GiST</acronym> Operator Classes</strong></p><div class="table-contents"><table class="table" summary="Built-in SP-GiST Operator Classes" border="1"><colgroup><col /><col /><col /><col /></colgroup><thead><tr><th>Name</th><th>Indexed Data Type</th><th>Indexable Operators</th><th>Ordering Operators</th></tr></thead><tbody><tr><td><code class="literal">kd_point_ops</code></td><td><code class="type">point</code></td><td> + <code class="literal"><<</code> + <code class="literal"><@</code> + <code class="literal"><^</code> + <code class="literal">>></code> + <code class="literal">>^</code> + <code class="literal">~=</code> + </td><td> + <code class="literal"><-></code> + </td></tr><tr><td><code class="literal">quad_point_ops</code></td><td><code class="type">point</code></td><td> + <code class="literal"><<</code> + <code class="literal"><@</code> + <code class="literal"><^</code> + <code class="literal">>></code> + <code class="literal">>^</code> + <code class="literal">~=</code> + </td><td> + <code class="literal"><-></code> + </td></tr><tr><td><code class="literal">range_ops</code></td><td>any range type</td><td> + <code class="literal">&&</code> + <code class="literal">&<</code> + <code class="literal">&></code> + <code class="literal">-|-</code> + <code class="literal"><<</code> + <code class="literal"><@</code> + <code class="literal">=</code> + <code class="literal">>></code> + <code class="literal">@></code> + </td><td> + </td></tr><tr><td><code class="literal">box_ops</code></td><td><code class="type">box</code></td><td> + <code class="literal"><<</code> + <code class="literal">&<</code> + <code class="literal">&&</code> + <code class="literal">&></code> + <code class="literal">>></code> + <code class="literal">~=</code> + <code class="literal">@></code> + <code class="literal"><@</code> + <code class="literal">&<|</code> + <code class="literal"><<|</code> + <code class="literal">|>></code> + <code class="literal">|&></code> + </td><td> + <code class="literal"><-></code> + </td></tr><tr><td><code class="literal">poly_ops</code></td><td><code class="type">polygon</code></td><td> + <code class="literal"><<</code> + <code class="literal">&<</code> + <code class="literal">&&</code> + <code class="literal">&></code> + <code class="literal">>></code> + <code class="literal">~=</code> + <code class="literal">@></code> + <code class="literal"><@</code> + <code class="literal">&<|</code> + <code class="literal"><<|</code> + <code class="literal">|>></code> + <code class="literal">|&></code> + </td><td> + <code class="literal"><-></code> + </td></tr><tr><td><code class="literal">text_ops</code></td><td><code class="type">text</code></td><td> + <code class="literal"><</code> + <code class="literal"><=</code> + <code class="literal">=</code> + <code class="literal">></code> + <code class="literal">>=</code> + <code class="literal">~<=~</code> + <code class="literal">~<~</code> + <code class="literal">~>=~</code> + <code class="literal">~>~</code> + <code class="literal">^@</code> + </td><td> + </td></tr><tr><td><code class="literal">inet_ops</code></td><td><code class="type">inet</code>, <code class="type">cidr</code></td><td> + <code class="literal">&&</code> + <code class="literal">>></code> + <code class="literal">>>=</code> + <code class="literal">></code> + <code class="literal">>=</code> + <code class="literal"><></code> + <code class="literal"><<</code> + <code class="literal"><<=</code> + <code class="literal"><</code> + <code class="literal"><=</code> + <code class="literal">=</code> + </td><td> + </td></tr></tbody></table></div></div><br class="table-break" /><p> + Of the two operator classes for type <code class="type">point</code>, + <code class="literal">quad_point_ops</code> is the default. <code class="literal">kd_point_ops</code> + supports the same operators but uses a different index data structure that + may offer better performance in some applications. + </p><p> + The <code class="literal">quad_point_ops</code>, <code class="literal">kd_point_ops</code> and + <code class="literal">poly_ops</code> operator classes support the <code class="literal"><-></code> + ordering operator, which enables the k-nearest neighbor (<code class="literal">k-NN</code>) + search over indexed point or polygon data sets. + </p></div><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navfooter"><hr></hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="spgist-intro.html" title="65.1. Introduction">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="spgist.html" title="Chapter 65. SP-GiST Indexes">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="spgist-extensibility.html" title="65.3. Extensibility">Next</a></td></tr><tr><td width="40%" align="left" valign="top">65.1. Introduction </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 13.4 Documentation">Home</a></td><td width="40%" align="right" valign="top"> 65.3. Extensibility</td></tr></table></div></body></html>
\ No newline at end of file |