postgresql/doc/src/sgml/ref/load.sgml

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$Header: /cvsroot/pgsql/doc/src/sgml/ref/load.sgml,v 1.12 2002/01/20 22:19:57 petere Exp $
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<refentry id="SQL-LOAD">
<refmeta>
<refentrytitle id="SQL-LOAD-TITLE">LOAD</refentrytitle>
<refmiscinfo>SQL - Language Statements</refmiscinfo>
</refmeta>
<refnamediv>
<refname>LOAD</refname>
<refpurpose>load or reload a shared library file</refpurpose>
</refnamediv>
<refsynopsisdiv>
<synopsis>
LOAD '<replaceable class="PARAMETER">filename</replaceable>'
</synopsis>
</refsynopsisdiv>
<refsect1 id="sql-load-description">
<title>Description</title>
<para>
Loads a shared library file into the PostgreSQL backend's address
space. If the file had been loaded previously, it is first
unloaded. This command is primarily useful to unload and reload a
shared library file that has been changed since the backend first
loaded it. To make use of the
shared library, function(s) in it need to be declared using the <xref
linkend="sql-createfunction" endterm="sql-createfunction-title"> command.
</para>
<para>
The file name is specified in the same way as for shared library
names in <xref linkend="sql-createfunction" endterm="sql-createfunction-title">; in particular, one
may rely on a search path and automatic addition of the system's standard
shared library file name extension. See the
<citetitle>Programmer's Guide</citetitle> for more detail.
</para>
</refsect1>
<refsect1 id="sql-load-compat">
<title>Compatibility</title>
<para>
<command>LOAD</command> is a <application>PostgreSQL</application>
extension.
</para>
</refsect1>
<refsect1>
<title>See Also</title>
<para>
<xref linkend="sql-createfunction">,
<citetitle>PostgreSQL Programmer's Guide</citetitle>
</para>
</refsect1>
</refentry>
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