Not really a question. Well, I did ask this question around 3 or so years ago, and I was finally able to figure it out - how to connect to perl with JDBC. One challenge I found was that the documenetation for modern databases was very sparse. I'm including directions here- in case any one runs into this problem.

Perl + JDBC + Trino End-to-End Example 1. Prerequisites Strawberry Perl with DBI and DBD::JDBC modules installed. Java Proxy JAR (from DBD::JDBC) running: java -jar jdbc_bridge.jar -port 12345 Trino JDBC Driver (trino-jdbc-*.jar) in your CLASSPATH. 2. Certificate Setup (Optional SSL) If your Trino instance requires a trusted connection: Convert your .crt file to .jks (Java KeyStore): keytool -import -trustcacerts -alias trino -file your_cert.crt -keystore truststore.jks -storepass changeit Then use the truststore.jks with your Java command if needed: java -Djavax.net.ssl.trustStore=truststore.jks -Djavax.net.ssl.trustStorePassword=changeit -jar jdbc_bridge.jar -port 12345 3. Perl Script: trino_connect.pl

use strict;
use warnings;
use DBI;
# -- Your credentials
my $user     = "svc-ndevfcollect";
my $password = "yourPasswordHere!";  # Use secure storage in productio
+n
# -- JDBC URL to Trino (443 confirmed)
my $url = "jdbc:trino://query.comcast.com:443?SSL=true&catalog=dx";
# -- JDBC bridge connection (localhost to Java proxy)
my $dsn = "dbi:JDBC:hostname=localhost;port=12345;url=$url";
# -- Optional: Print connection hash for debugging
my %conn_attrs = (
    RaiseError     => 1,
    jdbc_user      => $user,
    jdbc_password  => $password,
    jdbc_catalog   => "dx",            # Change as needed
);
use Data::Dumper;
print Dumper(\%conn_attrs);
# -- Connect to Trino
my $dbh = DBI->connect($dsn, undef, undef, \%conn_attrs)
    or die "Failed to connect: $DBI::errstr";
print "Connected successfully!\n";
# -- Run sample query
my $sth = $dbh->prepare("SELECT current_user");
$sth->execute();
while (my @row = $sth->fetchrow_array) {
    print "User: $row[0]\n";
}
$sth->finish();
$dbh->disconnect();
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4. Launch Instructions Run your Java proxy: java -jar jdbc_bridge.jar -port 12345 Run the Perl script: perl trino_connect.pl 5. Common Issues Error Fix Authentication failed: Unauthorized Confirm user/pass, and that Trino allows password auth. unexpected end of stream Port/firewall/VPN issues. Verify port 443 is reachable. Connection argument is not a valid property Use hashref for properties, not in DSN string. SSL=true not working Confirm the Java bridge trusts Trino’s cert. Use truststore.jks if needed.