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<!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>51.34. pg_operator</title><link rel="stylesheet" type="text/css" href="stylesheet.css" /><link rev="made" href="pgsql-docs@postgresql.org" /><meta name="generator" content="DocBook XSL Stylesheets V1.79.1" /><link rel="prev" href="catalog-pg-opclass.html" title="51.33. pg_opclass" /><link rel="next" href="catalog-pg-opfamily.html" title="51.35. pg_opfamily" /><meta name="viewport" content="width=device-width,initial-scale=1.0" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="4" align="center"><a accesskey="h" href="index.html">PostgreSQL 10.5文書</a></th></tr><tr><td width="10%" align="left"></td><td width="10%" align="left"></td><td width="60%" align="center"><a href="catalogs.html" title="第51章 システムカタログ">第51章 システムカタログ</a></td><td width="20%" align="right"><div class="actions"><a class="issue" title="github" href="https://github.com/pgsql-jp/jpug-doc/issues/new?title=version 10.5 catalog-pg-operator.html">誤訳等の報告
</a></div></td></tr><tr><td width="10%" align="left"><a accesskey="p" href="catalog-pg-opclass.html" title="51.33. pg_opclass">前へ</a> </td><td width="10%" align="left"><a accesskey="u" href="catalogs.html" title="第51章 システムカタログ">上へ</a></td><td width="60%" align="center">51.34. <code class="structname">pg_operator</code></td><td width="20%" align="right"> <a accesskey="n" href="catalog-pg-opfamily.html" title="51.35. pg_opfamily">次へ</a></td></tr></table><hr /></div><div class="sect1" id="CATALOG-PG-OPERATOR"><div class="titlepage"><div><div><h2 class="title" style="clear: both">51.34. <code class="structname">pg_operator</code></h2></div></div></div><a id="id-1.10.4.36.2" class="indexterm"></a><p><span class="original">
The catalog <structname>pg_operator</> stores information about operators.
See <xref linkend="sql-createoperator">
and <xref linkend="xoper"> for more information.
</span><code class="structname">pg_operator</code>カタログは演算子の情報を保存します。
<a class="xref" href="sql-createoperator.html" title="CREATE OPERATOR"><span class="refentrytitle">CREATE OPERATOR</span></a>と<a class="xref" href="xoper.html" title="37.12. ユーザ定義の演算子">37.12</a>を参照してください。
</p><div class="table" id="id-1.10.4.36.4"><p class="title"><strong>表51.34 <code class="structname">pg_operator</code>の列</strong></p><div class="table-contents"><span class="original">
<title><structname>pg_operator</> Columns</title>
</span><table class="table" summary="pg_operatorの列" border="1"><colgroup><col /><col /><col /><col /></colgroup><thead><tr><th>名前</th><th>型</th><th>参照先</th><th>説明</th></tr></thead><tbody><tr><td><code class="structfield">oid</code></td><td><code class="type">oid</code></td><td> </td><td>行識別子（隠し属性です。明示的に選択しなければなりません）</td></tr><tr><td><code class="structfield">oprname</code></td><td><code class="type">name</code></td><td> </td><td>演算子名</td></tr><tr><td><code class="structfield">oprnamespace</code></td><td><code class="type">oid</code></td><td><code class="literal"><a class="link" href="catalog-pg-namespace.html" title="51.32. pg_namespace"><code class="structname">pg_namespace</code></a>.oid</code></td><td><span class="original">
The OID of the namespace that contains this operator
</span> この演算子を含む名前空間のOID
</td></tr><tr><td><code class="structfield">oprowner</code></td><td><code class="type">oid</code></td><td><code class="literal"><a class="link" href="catalog-pg-authid.html" title="51.8. pg_authid"><code class="structname">pg_authid</code></a>.oid</code></td><td>演算子の所有者</td></tr><tr><td><code class="structfield">oprkind</code></td><td><code class="type">char</code></td><td> </td><td><span class="original">
<literal>b</> = infix (<quote>both</quote>), <literal>l</> = prefix
(<quote>left</quote>), <literal>r</> = postfix (<quote>right</quote>)
</span> <code class="literal">b</code> = 挿入辞（<span class="quote">「<span class="quote">両側</span>」</span>）、
<code class="literal">l</code> = 接頭辞（<span class="quote">「<span class="quote">左側</span>」</span>)、
<code class="literal">r</code> = 接尾辞（<span class="quote">「<span class="quote">右側</span>」</span>）
</td></tr><tr><td><code class="structfield">oprcanmerge</code></td><td><code class="type">bool</code></td><td> </td><td>この演算子はマージ結合をサポートします。</td></tr><tr><td><code class="structfield">oprcanhash</code></td><td><code class="type">bool</code></td><td> </td><td>この演算子はハッシュ結合をサポートします。</td></tr><tr><td><code class="structfield">oprleft</code></td><td><code class="type">oid</code></td><td><code class="literal"><a class="link" href="catalog-pg-type.html" title="51.62. pg_type"><code class="structname">pg_type</code></a>.oid</code></td><td>左辺オペランドの型</td></tr><tr><td><code class="structfield">oprright</code></td><td><code class="type">oid</code></td><td><code class="literal"><a class="link" href="catalog-pg-type.html" title="51.62. pg_type"><code class="structname">pg_type</code></a>.oid</code></td><td>右辺オペランドの型</td></tr><tr><td><code class="structfield">oprresult</code></td><td><code class="type">oid</code></td><td><code class="literal"><a class="link" href="catalog-pg-type.html" title="51.62. pg_type"><code class="structname">pg_type</code></a>.oid</code></td><td>結果の型</td></tr><tr><td><code class="structfield">oprcom</code></td><td><code class="type">oid</code></td><td><code class="literal"><a class="link" href="catalog-pg-operator.html" title="51.34. pg_operator"><code class="structname">pg_operator</code></a>.oid</code></td><td>もし存在すればこの演算子の交代演算子</td></tr><tr><td><code class="structfield">oprnegate</code></td><td><code class="type">oid</code></td><td><code class="literal"><a class="link" href="catalog-pg-operator.html" title="51.34. pg_operator"><code class="structname">pg_operator</code></a>.oid</code></td><td>もし存在すればこの演算子の否定子</td></tr><tr><td><code class="structfield">oprcode</code></td><td><code class="type">regproc</code></td><td><code class="literal"><a class="link" href="catalog-pg-proc.html" title="51.39. pg_proc"><code class="structname">pg_proc</code></a>.oid</code></td><td>この演算子を実装する関数</td></tr><tr><td><code class="structfield">oprrest</code></td><td><code class="type">regproc</code></td><td><code class="literal"><a class="link" href="catalog-pg-proc.html" title="51.39. pg_proc"><code class="structname">pg_proc</code></a>.oid</code></td><td>この演算子の制約選択評価関数</td></tr><tr><td><code class="structfield">oprjoin</code></td><td><code class="type">regproc</code></td><td><code class="literal"><a class="link" href="catalog-pg-proc.html" title="51.39. pg_proc"><code class="structname">pg_proc</code></a>.oid</code></td><td>この演算子の結合選択評価関数</td></tr></tbody></table></div></div><br class="table-break" /><p><span class="original">
Unused column contain zeroes. For example, <structfield>oprleft</structfield>
is zero for a prefix operator.
</span>未使用の列にはゼロが入ります。
例えば、接頭辞演算子では<code class="structfield">oprleft</code>はゼロです。
</p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="catalog-pg-opclass.html">前へ</a> </td><td width="20%" align="center"><a accesskey="u" href="catalogs.html">上へ</a></td><td width="40%" align="right"> <a accesskey="n" href="catalog-pg-opfamily.html">次へ</a></td></tr><tr><td width="40%" align="left" valign="top">51.33. <code class="structname">pg_opclass</code> </td><td width="20%" align="center"><a accesskey="h" href="index.html">ホーム</a></td><td width="40%" align="right" valign="top"> 51.35. <code class="structname">pg_opfamily</code></td></tr></table></div></body></html>