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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 OPERATOR CLASS</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 Vsnapshot" /><link rel="prev" href="sql-dropoperator.html" title="DROP OPERATOR" /><link rel="next" href="sql-dropopfamily.html" title="DROP OPERATOR FAMILY" /></head><body id="docContent" class="container-fluid col-10"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="5" align="center">DROP OPERATOR CLASS</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="sql-dropoperator.html" title="DROP OPERATOR">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 16.2 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="sql-dropopfamily.html" title="DROP OPERATOR FAMILY">Next</a></td></tr></table><hr /></div><div class="refentry" id="SQL-DROPOPCLASS"><div class="titlepage"></div><a id="id-1.9.3.120.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">DROP OPERATOR CLASS</span></h2><p>DROP OPERATOR CLASS — remove an operator class</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">
+DROP OPERATOR CLASS [ IF EXISTS ] <em class="replaceable"><code>name</code></em> USING <em class="replaceable"><code>index_method</code></em> [ CASCADE | RESTRICT ]
+</pre></div><div class="refsect1" id="id-1.9.3.120.5"><h2>Description</h2><p>
+   <code class="command">DROP OPERATOR CLASS</code> drops an existing operator class.
+   To execute this command you must be the owner of the operator class.
+  </p><p>
+   <code class="command">DROP OPERATOR CLASS</code> does not drop any of the operators
+   or functions referenced by the class.  If there are any indexes depending
+   on the operator class, you will need to specify
+   <code class="literal">CASCADE</code> for the drop to complete.
+  </p></div><div class="refsect1" id="id-1.9.3.120.6"><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 operator class 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 (optionally schema-qualified) of an existing operator class.
+     </p></dd><dt><span class="term"><em class="replaceable"><code>index_method</code></em></span></dt><dd><p>
+      The name of the index access method the operator class is for.
+     </p></dd><dt><span class="term"><code class="literal">CASCADE</code></span></dt><dd><p>
+      Automatically drop objects that depend on the operator class (such as
+      indexes), 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 operator class if any objects depend on it.
+      This is the default.
+     </p></dd></dl></div></div><div class="refsect1" id="id-1.9.3.120.7"><h2>Notes</h2><p>
+   <code class="command">DROP OPERATOR CLASS</code> will not drop the operator family
+   containing the class, even if there is nothing else left in the
+   family (in particular, in the case where the family was implicitly
+   created by <code class="command">CREATE OPERATOR CLASS</code>).  An empty operator
+   family is harmless, but for the sake of tidiness you might wish to
+   remove the family with <code class="command">DROP OPERATOR FAMILY</code>; or perhaps
+   better, use <code class="command">DROP OPERATOR FAMILY</code> in the first place.
+  </p></div><div class="refsect1" id="id-1.9.3.120.8"><h2>Examples</h2><p>
+   Remove the B-tree operator class <code class="literal">widget_ops</code>:
+
+</p><pre class="programlisting">
+DROP OPERATOR CLASS widget_ops USING btree;
+</pre><p>
+
+   This command will not succeed if there are any existing indexes
+   that use the operator class.  Add <code class="literal">CASCADE</code> to drop
+   such indexes along with the operator class.
+  </p></div><div class="refsect1" id="id-1.9.3.120.9"><h2>Compatibility</h2><p>
+   There is no <code class="command">DROP OPERATOR CLASS</code> statement in the
+   SQL standard.
+  </p></div><div class="refsect1" id="id-1.9.3.120.10"><h2>See Also</h2><span class="simplelist"><a class="xref" href="sql-alteropclass.html" title="ALTER OPERATOR CLASS"><span class="refentrytitle">ALTER OPERATOR CLASS</span></a>, <a class="xref" href="sql-createopclass.html" title="CREATE OPERATOR CLASS"><span class="refentrytitle">CREATE OPERATOR CLASS</span></a>, <a class="xref" href="sql-dropopfamily.html" title="DROP OPERATOR FAMILY"><span class="refentrytitle">DROP OPERATOR FAMILY</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-dropoperator.html" title="DROP OPERATOR">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-dropopfamily.html" title="DROP OPERATOR FAMILY">Next</a></td></tr><tr><td width="40%" align="left" valign="top">DROP OPERATOR </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 16.2 Documentation">Home</a></td><td width="40%" align="right" valign="top"> DROP OPERATOR FAMILY</td></tr></table></div></body></html>
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