use DBI;
$dbh=DBI->connect(qq(DBI:mysql:database=sample_db;user=root;password=)) or die "Can't connect";
$sth=$dbh->prepare("SELECT name FROM employee") ;
$sth->execute();
$count=0;
while( my $row = $sth->fetchrow_hashref()){
print "Name: $row->{name}\n";
$count++;
}
print "There are $count rows in the sample database.\n";
$sth->finish();
$dbh->disconnect();