Binary package “postgresql-plperl-10” in ubuntu bionic

PL/Perl procedural language for PostgreSQL 10

 PL/Perl enables an SQL developer to write procedural language functions
 for PostgreSQL 10 in Perl. You need this package if you have any
 PostgreSQL 10 functions that use the languages plperl or plperlu.
 .
 PostgreSQL is an object-relational SQL database management system.