Question

I am a beginner with PostgreSQL. I got a SQL patch of PostgreSQL and while executing the SQL to configure it at my end. I am getting following error. My background is MySQL.

Query

CREATE FUNCTION wine_entry_script() RETURNS trigger
    LANGUAGE plperlu AS
$$
   #!/usr/bin/perl -w
   use strict;
   require ('/var/lib/pgsql/data/Trigger_Processor1.0.pl');
$$;

Error

ERROR: language “plperlu” does not exist SQL state: 42704 Hint: Use
CREATE LANGUAGE to load the language into the database.

Answer 1

plperlu is the untrusted version of PL/Perl (plperl). It is one of the prepared choices in PostgreSQL. Have a look:

SELECT * FROM pg_language;

To use it, run once per database:

CREATE LANGUAGE plperlu;

You must be superuser to install any additional language. You must be superuser to use untrusted languages. Be aware of security implications! More in the manual.

Most Linux systems come with Perl installed. Under Windows, make sure that some flavor of Perl is installed in your system (providing the required DLL files) before you can create the language.

Related:

• Create Language plperl – Error: could not load library plperl.dll