Installing a language with Amazon RDS? I am using an instance of Postgres on RDS and I am trying to run:

=&gt; create language plperlu;

but I get:

ERROR:  must be superuser to create procedural language "plperlu"

If I run:

=&gt; grant rds_superuser to treex;
NOTICE:  role "treex" is already a member of role "rds_superuser"
GRANT ROLE


Is it actually possible to use perl extensions for Postgres on RDS or the only solution is creating a Docker instance with Postgres and Perl modules preinstalled?
You can't do this on RDS. The rds_superuser isn't a true superuser and cannot load any C-language extensions.