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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>DROP RULE</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-droproutine.html" title="DROP ROUTINE" /><link rel="next" href="sql-dropschema.html" title="DROP SCHEMA" /></head><body><div xmlns="http://www.w3.org/TR/xhtml1/transitional" class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">DROP RULE</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="sql-droproutine.html" title="DROP ROUTINE">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 12.4 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="sql-dropschema.html" title="DROP SCHEMA">Next</a></td></tr></table><hr></hr></div><div class="refentry" id="SQL-DROPRULE"><div class="titlepage"></div><a id="id-1.9.3.128.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">DROP RULE</span></h2><p>DROP RULE — remove a rewrite rule</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">
- DROP RULE [ IF EXISTS ] <em class="replaceable"><code>name</code></em> ON <em class="replaceable"><code>table_name</code></em> [ CASCADE | RESTRICT ]
- </pre></div><div class="refsect1" id="id-1.9.3.128.5"><h2>Description</h2><p>
- <code class="command">DROP RULE</code> drops a rewrite rule.
- </p></div><div class="refsect1" id="id-1.9.3.128.6"><h2>Parameters</h2><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="literal">IF EXISTS</code></span></dt><dd><p>
- Do not throw an error if the rule does not exist. A notice is issued
- in this case.
- </p></dd><dt><span class="term"><em class="replaceable"><code>name</code></em></span></dt><dd><p>
- The name of the rule to drop.
- </p></dd><dt><span class="term"><em class="replaceable"><code>table_name</code></em></span></dt><dd><p>
- The name (optionally schema-qualified) of the table or view that
- the rule applies to.
- </p></dd><dt><span class="term"><code class="literal">CASCADE</code></span></dt><dd><p>
- Automatically drop objects that depend on the rule,
- and in turn all objects that depend on those objects
- (see <a class="xref" href="ddl-depend.html" title="5.14. Dependency Tracking">Section 5.14</a>).
- </p></dd><dt><span class="term"><code class="literal">RESTRICT</code></span></dt><dd><p>
- Refuse to drop the rule if any objects depend on it. This is
- the default.
- </p></dd></dl></div></div><div class="refsect1" id="id-1.9.3.128.7"><h2>Examples</h2><p>
- To drop the rewrite rule <code class="literal">newrule</code>:
-
- </p><pre class="programlisting">
- DROP RULE newrule ON mytable;
- </pre></div><div class="refsect1" id="id-1.9.3.128.8"><h2>Compatibility</h2><p>
- <code class="command">DROP RULE</code> is a
- <span class="productname">PostgreSQL</span> language extension, as is the
- entire query rewrite system.
- </p></div><div class="refsect1" id="id-1.9.3.128.9"><h2>See Also</h2><span class="simplelist"><a class="xref" href="sql-createrule.html" title="CREATE RULE"><span class="refentrytitle">CREATE RULE</span></a>, <a class="xref" href="sql-alterrule.html" title="ALTER RULE"><span class="refentrytitle">ALTER RULE</span></a></span></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="sql-droproutine.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="sql-commands.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="sql-dropschema.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">DROP ROUTINE </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> DROP SCHEMA</td></tr></table></div></body></html>
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