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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >LOAD</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REV="MADE" HREF="mailto:pgsql-docs@postgresql.org"><LINK REL="HOME" TITLE="PostgreSQL 9.2.24 Documentation" HREF="index.html"><LINK REL="UP" TITLE="SQL Commands" HREF="sql-commands.html"><LINK REL="PREVIOUS" TITLE="LISTEN" HREF="sql-listen.html"><LINK REL="NEXT" TITLE="LOCK" HREF="sql-lock.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="stylesheet.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"><META NAME="creation" CONTENT="2017-11-06T22:43:11"></HEAD ><BODY CLASS="REFENTRY" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="5" ALIGN="center" VALIGN="bottom" ><A HREF="index.html" >PostgreSQL 9.2.24 Documentation</A ></TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A TITLE="LISTEN" HREF="sql-listen.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="sql-commands.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="20%" ALIGN="right" VALIGN="top" ><A TITLE="LOCK" HREF="sql-lock.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><H1 ><A NAME="SQL-LOAD" ></A >LOAD</H1 ><DIV CLASS="REFNAMEDIV" ><A NAME="AEN76285" ></A ><H2 >Name</H2 >LOAD -- load a shared library file</DIV ><DIV CLASS="REFSYNOPSISDIV" ><A NAME="AEN76290" ></A ><H2 >Synopsis</H2 ><PRE CLASS="SYNOPSIS" >LOAD '<TT CLASS="REPLACEABLE" ><I >filename</I ></TT >'</PRE ></DIV ><DIV CLASS="REFSECT1" ><A NAME="SQL-LOAD-DESCRIPTION" ></A ><H2 >Description</H2 ><P > This command loads a shared library file into the <SPAN CLASS="PRODUCTNAME" >PostgreSQL</SPAN > server's address space. If the file has been loaded already, the command does nothing. Shared library files that contain C functions are automatically loaded whenever one of their functions is called. Therefore, an explicit <TT CLASS="COMMAND" >LOAD</TT > is usually only needed to load a library that modifies the server's behavior through <SPAN CLASS="QUOTE" >"hooks"</SPAN > rather than providing a set of functions. </P ><P > The file name is specified in the same way as for shared library names in <A HREF="sql-createfunction.html" >CREATE FUNCTION</A >; in particular, one can rely on a search path and automatic addition of the system's standard shared library file name extension. See <A HREF="xfunc-c.html" >Section 35.9</A > for more information on this topic. </P ><P > Non-superusers can only apply <TT CLASS="COMMAND" >LOAD</TT > to library files located in <TT CLASS="FILENAME" >$libdir/plugins/</TT > — the specified <TT CLASS="REPLACEABLE" ><I >filename</I ></TT > must begin with exactly that string. (It is the database administrator's responsibility to ensure that only <SPAN CLASS="QUOTE" >"safe"</SPAN > libraries are installed there.) </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="SQL-LOAD-COMPAT" ></A ><H2 >Compatibility</H2 ><P > <TT CLASS="COMMAND" >LOAD</TT > is a <SPAN CLASS="PRODUCTNAME" >PostgreSQL</SPAN > extension. </P ></DIV ><DIV CLASS="REFSECT1" ><A NAME="AEN76315" ></A ><H2 >See Also</H2 ><P > <A HREF="sql-createfunction.html" >CREATE FUNCTION</A > </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="sql-listen.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="sql-lock.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >LISTEN</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="sql-commands.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >LOCK</TD ></TR ></TABLE ></DIV ></BODY ></HTML >