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<!--
$Header: /cvsroot/pgsql/doc/src/sgml/ref/close.sgml,v 1.13 2002/05/18 15:44:47 petere Exp $
PostgreSQL documentation
-->
<refentry id="SQL-CLOSE">
<refmeta>
<refentrytitle id="SQL-CLOSE-TITLE">CLOSE</refentrytitle>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>
CLOSE
</refname>
<refpurpose>
close a cursor
</refpurpose>
</refnamediv>
<refsynopsisdiv>
<refsynopsisdivinfo>
<date>1999-07-20</date>
</refsynopsisdivinfo>
<synopsis>
CLOSE <replaceable class="PARAMETER">cursor</replaceable>
</synopsis>
<refsect2 id="R2-SQL-CLOSE-1">
<refsect2info>
<date>1998-09-08</date>
</refsect2info>
<title>
Inputs
</title>
<para>
<variablelist>
<varlistentry>
<term><replaceable class="PARAMETER">cursor</replaceable></term>
<listitem>
<para>
The name of an open cursor to close.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect2>
<refsect2 id="R2-SQL-CLOSE-2">
<refsect2info>
<date>1998-09-08</date>
</refsect2info>
<title>
Outputs
</title>
<para>
<variablelist>
<varlistentry>
<term><computeroutput>
CLOSE CURSOR
</computeroutput></term>
<listitem>
<para>
Message returned if the cursor is successfully closed.
</para>
</listitem>
</varlistentry>
<varlistentry>
<term><computeroutput>
WARNING: PerformPortalClose: portal "<replaceable class="PARAMETER">cursor</replaceable>" not found
</computeroutput></term>
<listitem>
<para>
This warning is given if
<replaceable class="PARAMETER">cursor</replaceable> is not
declared or has already been closed.
</para>
</listitem>
</varlistentry>
</variablelist>
</para>
</refsect2>
</refsynopsisdiv>
<refsect1 id="R1-SQL-CLOSE-1">
<refsect1info>
<date>1998-09-08</date>
</refsect1info>
<title>
Description
</title>
<para>
<command>CLOSE</command> frees the resources associated with an open cursor.
After the cursor is closed, no subsequent operations
are allowed on it. A cursor should be closed when it is
no longer needed.
</para>
<para>
An implicit close is executed for every open cursor when a
transaction is terminated by <command>COMMIT</command>
or <command>ROLLBACK</command>.
</para>
<refsect2 id="R2-SQL-CLOSE-3">
<refsect2info>
<date>1998-09-08</date>
</refsect2info>
<title>
Notes
</title>
<para>
<productname>PostgreSQL</productname> does not have
an explicit <command>OPEN</command> cursor statement;
a cursor is considered open when it is declared.
Use the <command>DECLARE</command> statement to declare a cursor.
</para>
</refsect2>
</refsect1>
<refsect1 id="R1-SQL-CLOSE-2">
<title>
Usage
</title>
<para>
Close the cursor <literal>liahona</literal>:
</para>
<programlisting>
CLOSE liahona;
</programlisting>
</refsect1>
<refsect1 id="R1-SQL-CLOSE-3">
<title>
Compatibility
</title>
<refsect2 id="R2-SQL-CLOSE-4">
<refsect2info>
<date>1998-09-08</date>
</refsect2info>
<title>
SQL92
</title>
<para>
<command>CLOSE</command> is fully compatible with SQL92.
</para>
</refsect2>
</refsect1>
</refentry>
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