-- test warnings and errors from plperl
create or replace function perl_elog(text) returns void language plperl as $$

  my $msg = shift;
  elog(NOTICE,$msg);

$$;
select perl_elog('explicit elog');
NOTICE:  explicit elog
 perl_elog 
-----------
 
(1 row)

create or replace function perl_warn(text) returns void language plperl as $$

  my $msg = shift;
  warn($msg);

$$;
select perl_warn('implicit elog via warn');
NOTICE:  implicit elog via warn at (eval 9) line 4.

 perl_warn 
-----------
 
(1 row)