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  • Committer: Bazaar Package Importer
  • Author(s): Martin Pitt
  • Date: 2011-05-11 10:41:53 UTC
  • Revision ID: james.westby@ubuntu.com-20110511104153-psbh2o58553fv1m0
Tags: upstream-9.1~beta1
Import upstream version 9.1~beta1

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doc/src/sgml/html/plperl.html
 
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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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<HTML
 
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><HEAD
 
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><TITLE
 
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>PL/Perl - Perl Procedural Language</TITLE
 
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><META
 
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NAME="GENERATOR"
 
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CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK
 
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REV="MADE"
 
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HREF="mailto:pgsql-docs@postgresql.org"><LINK
 
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REL="HOME"
 
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TITLE="PostgreSQL 9.1beta1 Documentation"
 
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HREF="index.html"><LINK
 
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REL="UP"
 
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TITLE="Server Programming"
 
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HREF="server-programming.html"><LINK
 
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REL="PREVIOUS"
 
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TITLE="Tcl Procedure Names"
 
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HREF="pltcl-procnames.html"><LINK
 
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REL="NEXT"
 
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TITLE="PL/Perl Functions and Arguments"
 
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HREF="plperl-funcs.html"><LINK
 
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REL="STYLESHEET"
 
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TYPE="text/css"
 
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HREF="stylesheet.css"><META
 
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HTTP-EQUIV="Content-Type"
 
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CONTENT="text/html; charset=ISO-8859-1"><META
 
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NAME="creation"
 
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CONTENT="2011-04-27T21:20:33"></HEAD
 
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><BODY
 
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CLASS="CHAPTER"
 
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><DIV
 
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CLASS="NAVHEADER"
 
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><TABLE
 
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SUMMARY="Header navigation table"
 
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WIDTH="100%"
 
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BORDER="0"
 
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CELLPADDING="0"
 
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CELLSPACING="0"
 
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><TR
 
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><TH
 
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COLSPAN="5"
 
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ALIGN="center"
 
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VALIGN="bottom"
 
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><A
 
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HREF="index.html"
 
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>PostgreSQL 9.1beta1 Documentation</A
 
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></TH
 
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></TR
 
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><TR
 
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><TD
 
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WIDTH="10%"
 
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ALIGN="left"
 
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VALIGN="top"
 
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><A
 
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TITLE="Tcl Procedure Names"
 
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HREF="pltcl-procnames.html"
 
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ACCESSKEY="P"
 
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>Prev</A
 
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></TD
 
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><TD
 
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WIDTH="10%"
 
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ALIGN="left"
 
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VALIGN="top"
 
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><A
 
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TITLE="PL/Tcl - Tcl Procedural Language"
 
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HREF="pltcl.html"
 
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>Fast Backward</A
 
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></TD
 
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><TD
 
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WIDTH="60%"
 
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ALIGN="center"
 
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VALIGN="bottom"
 
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></TD
 
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><TD
 
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WIDTH="10%"
 
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ALIGN="right"
 
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VALIGN="top"
 
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><A
 
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TITLE="PL/Python - Python Procedural Language"
 
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HREF="plpython.html"
 
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>Fast Forward</A
 
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></TD
 
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><TD
 
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WIDTH="10%"
 
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ALIGN="right"
 
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VALIGN="top"
 
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><A
 
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TITLE="PL/Perl Functions and Arguments"
 
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HREF="plperl-funcs.html"
 
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ACCESSKEY="N"
 
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>Next</A
 
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></TD
 
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></TR
 
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></TABLE
 
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><HR
 
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ALIGN="LEFT"
 
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WIDTH="100%"></DIV
 
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><DIV
 
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CLASS="CHAPTER"
 
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><H1
 
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><A
 
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NAME="PLPERL"
 
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></A
 
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>Chapter 41. PL/Perl - Perl Procedural Language</H1
 
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><DIV
 
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CLASS="TOC"
 
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><DL
 
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><DT
 
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><B
 
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>Table of Contents</B
 
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></DT
 
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><DT
 
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>41.1. <A
 
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HREF="plperl-funcs.html"
 
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>PL/Perl Functions and Arguments</A
 
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></DT
 
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><DT
 
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>41.2. <A
 
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HREF="plperl-data.html"
 
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>Data Values in PL/Perl</A
 
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></DT
 
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><DT
 
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>41.3. <A
 
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HREF="plperl-builtins.html"
 
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>Built-in Functions</A
 
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></DT
 
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><DD
 
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><DL
 
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><DT
 
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>41.3.1. <A
 
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HREF="plperl-builtins.html#PLPERL-DATABASE"
 
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>Database Access from PL/Perl</A
 
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></DT
 
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><DT
 
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>41.3.2. <A
 
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HREF="plperl-builtins.html#PLPERL-UTILITY-FUNCTIONS"
 
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>Utility Functions in PL/Perl</A
 
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></DT
 
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></DL
 
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></DD
 
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><DT
 
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>41.4. <A
 
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HREF="plperl-global.html"
 
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>Global Values in PL/Perl</A
 
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></DT
 
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><DT
 
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>41.5. <A
 
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HREF="plperl-trusted.html"
 
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>Trusted and Untrusted PL/Perl</A
 
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></DT
 
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><DT
 
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>41.6. <A
 
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HREF="plperl-triggers.html"
 
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>PL/Perl Triggers</A
 
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></DT
 
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><DT
 
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>41.7. <A
 
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HREF="plperl-under-the-hood.html"
 
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>PL/Perl Under the Hood</A
 
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></DT
 
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><DD
 
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><DL
 
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><DT
 
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>41.7.1. <A
 
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HREF="plperl-under-the-hood.html#PLPERL-CONFIG"
 
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>Configuration</A
 
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></DT
 
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><DT
 
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>41.7.2. <A
 
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HREF="plperl-under-the-hood.html#PLPERL-MISSING"
 
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>Limitations and Missing Features</A
 
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></DT
 
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></DL
 
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></DD
 
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></DL
 
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></DIV
 
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><P
 
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>   PL/Perl is a loadable procedural language that enables you to write
 
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   <SPAN
 
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CLASS="PRODUCTNAME"
 
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>PostgreSQL</SPAN
 
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> functions in the
 
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   <A
 
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HREF="http://www.perl.org"
 
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TARGET="_top"
 
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>Perl programming language</A
 
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>.
 
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  </P
 
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><P
 
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>   The main advantage to using PL/Perl is that this allows use,
 
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   within stored functions, of the manyfold <SPAN
 
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CLASS="QUOTE"
 
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>"string
 
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   munging"</SPAN
 
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> operators and functions available for Perl.  Parsing
 
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   complex strings might be easier using Perl than it is with the
 
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   string functions and control structures provided in PL/pgSQL.
 
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  </P
 
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><P
 
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>   To install PL/Perl in a particular database, use
 
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   <TT
 
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CLASS="LITERAL"
 
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>CREATE EXTENSION plperl</TT
 
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>, or from the shell command line use
 
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   <TT
 
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CLASS="LITERAL"
 
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>createlang plperl <TT
 
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CLASS="REPLACEABLE"
 
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><I
 
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>dbname</I
 
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></TT
 
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></TT
 
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>.
 
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  </P
 
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><DIV
 
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CLASS="TIP"
 
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><BLOCKQUOTE
 
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CLASS="TIP"
 
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><P
 
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><B
 
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>Tip: </B
 
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>    If a language is installed into <TT
 
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CLASS="LITERAL"
 
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>template1</TT
 
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>, all subsequently
 
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    created databases will have the language installed automatically.
 
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   </P
 
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></BLOCKQUOTE
 
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></DIV
 
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><DIV
 
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CLASS="NOTE"
 
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><BLOCKQUOTE
 
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CLASS="NOTE"
 
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><P
 
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><B
 
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>Note: </B
 
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>    Users of source packages must specially enable the build of
 
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    PL/Perl during the installation process.  (Refer to <A
 
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HREF="installation.html"
 
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>Chapter 15</A
 
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> for more information.)  Users of
 
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    binary packages might find PL/Perl in a separate subpackage.
 
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   </P
 
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></BLOCKQUOTE
 
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></DIV
 
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></DIV
 
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><DIV
 
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CLASS="NAVFOOTER"
 
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><HR
 
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ALIGN="LEFT"
 
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WIDTH="100%"><TABLE
 
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SUMMARY="Footer navigation table"
 
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WIDTH="100%"
 
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BORDER="0"
 
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CELLPADDING="0"
 
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CELLSPACING="0"
 
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><TR
 
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><TD
 
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WIDTH="33%"
 
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ALIGN="left"
 
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VALIGN="top"
 
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><A
 
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HREF="pltcl-procnames.html"
 
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ACCESSKEY="P"
 
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>Prev</A
 
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></TD
 
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><TD
 
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WIDTH="34%"
 
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ALIGN="center"
 
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VALIGN="top"
 
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><A
 
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HREF="index.html"
 
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ACCESSKEY="H"
 
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>Home</A
 
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></TD
 
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><TD
 
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WIDTH="33%"
 
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ALIGN="right"
 
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VALIGN="top"
 
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><A
 
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HREF="plperl-funcs.html"
 
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ACCESSKEY="N"
 
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>Next</A
 
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></TD
 
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></TR
 
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><TR
 
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><TD
 
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WIDTH="33%"
 
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ALIGN="left"
 
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VALIGN="top"
 
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>Tcl Procedure Names</TD
 
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><TD
 
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WIDTH="34%"
 
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ALIGN="center"
 
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VALIGN="top"
 
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><A
 
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HREF="server-programming.html"
 
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ACCESSKEY="U"
 
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>Up</A
 
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></TD
 
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><TD
 
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WIDTH="33%"
 
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ALIGN="right"
 
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VALIGN="top"
 
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>PL/Perl Functions and Arguments</TD
 
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></TR
 
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></TABLE
 
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></DIV
 
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></BODY
 
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></HTML
 
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>
 
 
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