On Wed, Mar 04, 2020 at 06:03:22AM -0500, stan wrote: > I am trying to examine the values of $_TD->{new}. I thought the easiest way > to see what this structure looked like was to use the Dumper functionality. > To do so I need to include the appropriate Perl module, which I would think > would be done like this: > use Data::Dumper qw(Dumper); plperl is trusted, and you can't use "use" in it. More on this: https://www.postgresql.org/docs/current/plperl-trusted.html You have two options: 1. Switch to pl/PerlU 2. set plperl.on_init to whatever "use" you need, examples: https://www.postgresql.org/docs/current/plperl-under-the-hood.html#PLPERL-CONFIG Best regards, depesz