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+<!--
+doc/src/sgml/ref/release_savepoint.sgml
+PostgreSQL documentation
+-->
+
+<refentry id="sql-release-savepoint">
+ <indexterm zone="sql-release-savepoint">
+ <primary>RELEASE SAVEPOINT</primary>
+ </indexterm>
+
+ <indexterm zone="sql-release-savepoint">
+ <primary>savepoints</primary>
+ <secondary>releasing</secondary>
+ </indexterm>
+
+ <refmeta>
+ <refentrytitle>RELEASE SAVEPOINT</refentrytitle>
+ <manvolnum>7</manvolnum>
+ <refmiscinfo>SQL - Language Statements</refmiscinfo>
+ </refmeta>
+
+ <refnamediv>
+ <refname>RELEASE SAVEPOINT</refname>
+ <refpurpose>destroy a previously defined savepoint</refpurpose>
+ </refnamediv>
+
+ <refsynopsisdiv>
+<synopsis>
+RELEASE [ SAVEPOINT ] <replaceable>savepoint_name</replaceable>
+</synopsis>
+ </refsynopsisdiv>
+
+ <refsect1>
+ <title>Description</title>
+
+ <para>
+ <command>RELEASE SAVEPOINT</command> destroys a savepoint previously defined
+ in the current transaction.
+ </para>
+
+ <para>
+ Destroying a savepoint makes it unavailable as a rollback point,
+ but it has no other user visible behavior. It does not undo the
+ effects of commands executed after the savepoint was established.
+ (To do that, see <xref linkend="sql-rollback-to"/>.)
+ Destroying a savepoint when
+ it is no longer needed allows the system to reclaim some resources
+ earlier than transaction end.
+ </para>
+
+ <para>
+ <command>RELEASE SAVEPOINT</command> also destroys all savepoints that were
+ established after the named savepoint was established.
+ </para>
+ </refsect1>
+
+ <refsect1>
+ <title>Parameters</title>
+
+ <variablelist>
+ <varlistentry>
+ <term><replaceable>savepoint_name</replaceable></term>
+ <listitem>
+ <para>
+ The name of the savepoint to destroy.
+ </para>
+ </listitem>
+ </varlistentry>
+ </variablelist>
+ </refsect1>
+
+ <refsect1>
+ <title>Notes</title>
+
+ <para>
+ Specifying a savepoint name that was not previously defined is an error.
+ </para>
+
+ <para>
+ It is not possible to release a savepoint when the transaction is in
+ an aborted state.
+ </para>
+
+ <para>
+ If multiple savepoints have the same name, only the one that was most
+ recently defined is released.
+ </para>
+
+ </refsect1>
+
+ <refsect1>
+ <title>Examples</title>
+
+ <para>
+ To establish and later destroy a savepoint:
+<programlisting>
+BEGIN;
+ INSERT INTO table1 VALUES (3);
+ SAVEPOINT my_savepoint;
+ INSERT INTO table1 VALUES (4);
+ RELEASE SAVEPOINT my_savepoint;
+COMMIT;
+</programlisting>
+ The above transaction will insert both 3 and 4.
+ </para>
+ </refsect1>
+
+ <refsect1>
+ <title>Compatibility</title>
+
+ <para>
+ This command conforms to the <acronym>SQL</acronym> standard. The standard
+ specifies that the key word <literal>SAVEPOINT</literal> is
+ mandatory, but <productname>PostgreSQL</productname> allows it to
+ be omitted.
+ </para>
+ </refsect1>
+
+ <refsect1>
+ <title>See Also</title>
+
+ <simplelist type="inline">
+ <member><xref linkend="sql-begin"/></member>
+ <member><xref linkend="sql-commit"/></member>
+ <member><xref linkend="sql-rollback"/></member>
+ <member><xref linkend="sql-rollback-to"/></member>
+ <member><xref linkend="sql-savepoint"/></member>
+ </simplelist>
+ </refsect1>
+</refentry>