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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 CONVERSION</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-dropcollation.html" title="DROP COLLATION" /><link rel="next" href="sql-dropdatabase.html" title="DROP DATABASE" /></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 CONVERSION</th></tr><tr><td width="10%" align="left"><a accesskey="p" href="sql-dropcollation.html" title="DROP COLLATION">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 15.4 Documentation">Home</a></td><td width="10%" align="right"> <a accesskey="n" href="sql-dropdatabase.html" title="DROP DATABASE">Next</a></td></tr></table><hr /></div><div class="refentry" id="SQL-DROPCONVERSION"><div class="titlepage"></div><a id="id-1.9.3.107.1" class="indexterm"></a><div class="refnamediv"><h2><span class="refentrytitle">DROP CONVERSION</span></h2><p>DROP CONVERSION — remove a conversion</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><pre class="synopsis">
DROP CONVERSION [ IF EXISTS ] <em class="replaceable"><code>name</code></em> [ CASCADE | RESTRICT ]
</pre></div><div class="refsect1" id="SQL-DROPCONVERSION-DESCRIPTION"><h2>Description</h2><p>
<code class="command">DROP CONVERSION</code> removes a previously defined conversion.
To be able to drop a conversion, you must own the conversion.
</p></div><div class="refsect1" id="id-1.9.3.107.6"><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 conversion 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 conversion. The conversion name can be
schema-qualified.
</p></dd><dt><span class="term"><code class="literal">CASCADE</code><br /></span><span class="term"><code class="literal">RESTRICT</code></span></dt><dd><p>
These key words do not have any effect, since there are no
dependencies on conversions.
</p></dd></dl></div></div><div class="refsect1" id="SQL-DROPCONVERSION-EXAMPLES"><h2>Examples</h2><p>
To drop the conversion named <code class="literal">myname</code>:
</p><pre class="programlisting">
DROP CONVERSION myname;
</pre></div><div class="refsect1" id="SQL-DROPCONVERSION-COMPAT"><h2>Compatibility</h2><p>
There is no <code class="command">DROP CONVERSION</code> statement in the SQL
standard, but a <code class="command">DROP TRANSLATION</code> statement that
goes along with the <code class="command">CREATE TRANSLATION</code> statement
that is similar to the <code class="command">CREATE CONVERSION</code>
statement in PostgreSQL.
</p></div><div class="refsect1" id="id-1.9.3.107.9"><h2>See Also</h2><span class="simplelist"><a class="xref" href="sql-alterconversion.html" title="ALTER CONVERSION"><span class="refentrytitle">ALTER CONVERSION</span></a>, <a class="xref" href="sql-createconversion.html" title="CREATE CONVERSION"><span class="refentrytitle">CREATE CONVERSION</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-dropcollation.html" title="DROP COLLATION">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-dropdatabase.html" title="DROP DATABASE">Next</a></td></tr><tr><td width="40%" align="left" valign="top">DROP COLLATION </td><td width="20%" align="center"><a accesskey="h" href="index.html" title="PostgreSQL 15.4 Documentation">Home</a></td><td width="40%" align="right" valign="top"> DROP DATABASE</td></tr></table></div></body></html>
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