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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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><H1
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>LOAD</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN78842"
></A
><H2
>Name</H2
>LOAD -- load a shared library file</DIV
><DIV
CLASS="REFSYNOPSISDIV"
><A
NAME="AEN78847"
></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
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><A
NAME="AEN78872"
></A
><H2
>See Also</H2
><P
> <A
HREF="sql-createfunction.html"
>CREATE FUNCTION</A
>
</P
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