Chapter 42. PL/Perl — Perl Procedural Language
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Chapter 42. PL/Perl — Perl Procedural Language

Table of Contents

42.1. PL/Perl Functions and Arguments
42.2. Data Values in PL/Perl
42.3. Built-in Functions
42.3.1. Database Access from PL/Perl
42.3.2. Utility Functions in PL/Perl
42.4. Global Values in PL/Perl
42.5. Trusted and Untrusted PL/Perl
42.6. PL/Perl Triggers
42.7. PL/Perl Event Triggers
42.8. PL/Perl Under the Hood
42.8.1. Configuration
42.8.2. Limitations and Missing Features

PL/Perl is a loadable procedural language that enables you to write LightDB functions and procedures in the Perl programming language.

The main advantage to using PL/Perl is that this allows use, within stored functions and procedures, of the manyfold “string munging” operators and functions available for Perl. Parsing complex strings might be easier using Perl than it is with the string functions and control structures provided in PL/pgSQL.

To install PL/Perl in a particular database, use CREATE EXTENSION plperl.

Tip

If a language is installed into template1, all subsequently created databases will have the language installed automatically.

Note

Users of source packages must specially enable the build of PL/Perl during the installation process. Users of binary packages might find PL/Perl in a separate subpackage.

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41.12. Tcl Procedure Names Home 42.1. PL/Perl Functions and Arguments