mysql - 我如何从 Perl 的 DBI 获得 MySQL 查询的结果？

Question

我正在执行以下操作，得到“1”，我认为这意味着语句运行良好。但我想要结果。

怎么了？

#!/usr/bin/perl

use strict;
use DBI;

my $host = "test";
my $database = "dd";
my $port = 3306;
my $user = "uuu";
my $pw = "ppp";

my $mysql = DBI->connect("DBI:mysql:database=$database;host=$host;port=$port", $user, $pw)
    or die "Cannot connect to MySQL server\n";

my $m = $mysql->do(qq{select MAX(idvisit) from log_visit});

print $m;

Answer 1

my $m = $mysql->prepare("select MAX(idvisit) from log_visit");
$m->execute() or die "Couldn't execute statement: ".$m->errstr;
print $m->fetch()->[0];