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<!--
$PostgreSQL: pgsql/doc/src/sgml/ref/deallocate.sgml,v 1.12 2010/04/03 07:23:00 petere Exp $
PostgreSQL documentation
-->
<refentry id="SQL-DEALLOCATE">
<refmeta>
<refentrytitle>DEALLOCATE</refentrytitle>
<manvolnum>7</manvolnum>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>DEALLOCATE</refname>
<refpurpose>deallocate a prepared statement</refpurpose>
</refnamediv>
<indexterm zone="sql-deallocate">
<primary>DEALLOCATE</primary>
</indexterm>
<indexterm zone="sql-deallocate">
<primary>prepared statements</primary>
<secondary>removing</secondary>
</indexterm>
<refsynopsisdiv>
<synopsis>
DEALLOCATE [ PREPARE ] { <replaceable class="parameter">name</replaceable> | ALL }
</synopsis>
</refsynopsisdiv>
<refsect1>
<title>Description</title>
<para>
<command>DEALLOCATE</command> is used to deallocate a previously
prepared SQL statement. If you do not explicitly deallocate a
prepared statement, it is deallocated when the session ends.
</para>
<para>
For more information on prepared statements, see <xref
linkend="sql-prepare">.
</para>
</refsect1>
<refsect1>
<title>Parameters</title>
<variablelist>
<varlistentry>
<term><literal>PREPARE</literal></term>
<listitem>
<para>
This key word is ignored.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><replaceable class="parameter">name</replaceable></term>
<listitem>
<para>
The name of the prepared statement to deallocate.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><literal>ALL</literal></term>
<listitem>
<para>
Deallocate all prepared statements.
</para>
</listitem>
</varlistentry>
</variablelist>
</refsect1>
<refsect1>
<title>Compatibility</title>
<para>
The SQL standard includes a <command>DEALLOCATE</command>
statement, but it is only for use in embedded SQL.
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<simplelist type="inline">
<member><xref linkend="sql-execute"></member>
<member><xref linkend="sql-prepare"></member>
</simplelist>
</refsect1>
</refentry>
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