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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 12:19:15 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-05-04 12:19:15 +0000
commit6eb9c5a5657d1fe77b55cc261450f3538d35a94d (patch)
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downloadpostgresql-13-6eb9c5a5657d1fe77b55cc261450f3538d35a94d.tar.xz
postgresql-13-6eb9c5a5657d1fe77b55cc261450f3538d35a94d.zip
Adding upstream version 13.4.upstream/13.4upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+<?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>SHOW</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="sql-set-transaction.html" title="SET TRANSACTION" /><link rel="next" href="sql-start-transaction.html" title="START TRANSACTION" /></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">SHOW</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="sql-set-transaction.html" title="SET TRANSACTION">Prev</a> </td><td width="10%" align="left"><a accesskey="u" href="sql-commands.html" title="SQL Commands">Up</a></td><th width="60%" align="center">SQL Commands</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="sql-start-transaction.html" title="START TRANSACTION">Next</a></td></tr></table><hr></hr></div><div class="refentry" id="SQL-SHOW"><div class="titlepage"></div><a id="id-1.9.3.178.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">SHOW</span></h2><p>SHOW — show the value of a run-time parameter</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">
+SHOW <em class="replaceable"><code>name</code></em>
+SHOW ALL
+</pre></div><div class="refsect1" id="id-1.9.3.178.5"><h2>Description</h2><p>
+ <code class="command">SHOW</code> will display the current setting of
+ run-time parameters. These variables can be set using the
+ <code class="command">SET</code> statement, by editing the
+ <code class="filename">postgresql.conf</code> configuration file, through
+ the <code class="envar">PGOPTIONS</code> environmental variable (when using
+ <span class="application">libpq</span> or a <span class="application">libpq</span>-based
+ application), or through command-line flags when starting the
+ <code class="command">postgres</code> server. See <a class="xref" href="runtime-config.html" title="Chapter 19. Server Configuration">Chapter 19</a> for details.
+ </p></div><div class="refsect1" id="id-1.9.3.178.6"><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><em class="replaceable"><code>name</code></em></span></dt><dd><p>
+ The name of a run-time parameter. Available parameters are
+ documented in <a class="xref" href="runtime-config.html" title="Chapter 19. Server Configuration">Chapter 19</a> and on the <a class="xref" href="sql-set.html" title="SET"><span class="refentrytitle">SET</span></a> reference page. In
+ addition, there are a few parameters that can be shown but not
+ set:
+
+ </p><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="literal">SERVER_VERSION</code></span></dt><dd><p>
+ Shows the server's version number.
+ </p></dd><dt><span class="term"><code class="literal">SERVER_ENCODING</code></span></dt><dd><p>
+ Shows the server-side character set encoding. At present,
+ this parameter can be shown but not set, because the
+ encoding is determined at database creation time.
+ </p></dd><dt><span class="term"><code class="literal">LC_COLLATE</code></span></dt><dd><p>
+ Shows the database's locale setting for collation (text
+ ordering). At present, this parameter can be shown but not
+ set, because the setting is determined at database creation
+ time.
+ </p></dd><dt><span class="term"><code class="literal">LC_CTYPE</code></span></dt><dd><p>
+ Shows the database's locale setting for character
+ classification. At present, this parameter can be shown but
+ not set, because the setting is determined at database creation
+ time.
+ </p></dd><dt><span class="term"><code class="literal">IS_SUPERUSER</code></span></dt><dd><p>
+ True if the current role has superuser privileges.
+ </p></dd></dl></div></dd><dt><span class="term"><code class="literal">ALL</code></span></dt><dd><p>
+ Show the values of all configuration parameters, with descriptions.
+ </p></dd></dl></div></div><div class="refsect1" id="id-1.9.3.178.7"><h2>Notes</h2><p>
+ The function <code class="function">current_setting</code> produces
+ equivalent output; see <a class="xref" href="functions-admin.html#FUNCTIONS-ADMIN-SET" title="9.27.1. Configuration Settings Functions">Section 9.27.1</a>.
+ Also, the
+ <a class="link" href="view-pg-settings.html" title="51.85. pg_settings"><code class="structname">pg_settings</code></a>
+ system view produces the same information.
+
+ </p></div><div class="refsect1" id="id-1.9.3.178.8"><h2>Examples</h2><p>
+ Show the current setting of the parameter <code class="varname">DateStyle</code>:
+
+</p><pre class="programlisting">
+SHOW DateStyle;
+ DateStyle
+-----------
+ ISO, MDY
+(1 row)
+</pre><p>
+ </p><p>
+ Show the current setting of the parameter <code class="varname">geqo</code>:
+</p><pre class="programlisting">
+SHOW geqo;
+ geqo
+------
+ on
+(1 row)
+</pre><p>
+ </p><p>
+ Show all settings:
+</p><pre class="programlisting">
+SHOW ALL;
+ name | setting | description
+-------------------------+---------+-------------------------------------------------
+ allow_system_table_mods | off | Allows modifications of the structure of ...
+ .
+ .
+ .
+ xmloption | content | Sets whether XML data in implicit parsing ...
+ zero_damaged_pages | off | Continues processing past damaged page headers.
+(196 rows)
+</pre></div><div class="refsect1" id="id-1.9.3.178.9"><h2>Compatibility</h2><p>
+ The <code class="command">SHOW</code> command is a
+ <span class="productname">PostgreSQL</span> extension.
+ </p></div><div class="refsect1" id="id-1.9.3.178.10"><h2>See Also</h2><span class="simplelist"><a class="xref" href="sql-set.html" title="SET"><span class="refentrytitle">SET</span></a>, <a class="xref" href="sql-reset.html" title="RESET"><span class="refentrytitle">RESET</span></a></span></div></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="sql-set-transaction.html" title="SET TRANSACTION">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="sql-commands.html" title="SQL Commands">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="sql-start-transaction.html" title="START TRANSACTION">Next</a></td></tr><tr><td width="40%" align="left" valign="top">SET TRANSACTION </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"> START TRANSACTION</td></tr></table></div></body></html> \ No newline at end of file
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