use DBI;

my $dbh = DBI->connect('DBI:SQLite:dbname=test_blob.db', '', '');

$dbh->do('CREATE TABLE test_blob( Bindata BLOB )');

my $bindata = "ABC" . "\x00" . "DEF";

my $sth1 = $dbh->prepare('INSERT INTO test_blob VALUES(?)' );
$sth1->execute($bindata);

my $sth2 = $dbh->prepare('SELECT Bindata FROM test_blob');
$sth2->execute();

my $row = $sth2->fetch();
my $fetched_data = $row->[0];

$sth2->finish();
$dbh->disconnect;

print $fetched_data;