The problem is that: your column name (for example, "key") clashed with mysql keywords. I can reproduce your issue, if I follow your column names, but once I rename the columns to a and b, the problem is gone:

use Storable qw(freeze);
use DBI;
use strict;
use warnings;

my $dsn = "DBI:mysql:database=test;host=foo";
my $dbh = DBI->connect($dsn, 'root', 'password', {RaiseError => 1});
my $data = {'a'=>1, 'b'=>{'c'=>2, 'd'=>3}, 'e'=>[1,2,3]};
my $frozen = freeze($data);
my $command = "insert into test(a,b) values(1,?)";
my $sth = $dbh->prepare($command);
$sth->execute($frozen);

[download]

Your problem can be easily reproduced (without Storable):

use DBI;
use strict;
use warnings;

my $dsn = "DBI:mysql:database=test;host=foo";
my $dbh = DBI->connect($dsn, 'root', 'abcd', {RaiseError => 1});
my $frozen = "1";
my $command = "insert into test(key,b) values(1,?)";
my $sth = $dbh->prepare($command);
$sth->execute($frozen);

[download]

In reply to Re: Putting mod Storable output into MySQL by pg
in thread Putting mod Storable output into MySQL by cormanaz

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