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diff --git a/doc/src/sgml/html/sql-dropopclass.html b/doc/src/sgml/html/sql-dropopclass.html new file mode 100644 index 0000000..7959fc2 --- /dev/null +++ b/doc/src/sgml/html/sql-dropopclass.html @@ -0,0 +1,47 @@ +<?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>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 xmlns="http://www.w3.org/TR/xhtml1/transitional" 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 14.5 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></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 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-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 14.5 Documentation">Home</a></td><td width="40%" align="right" valign="top"> DROP OPERATOR FAMILY</td></tr></table></div></body></html>
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