use lib qw ( c:/perlmodules );
use SqlSupport;
my $dbh = connectpgdb(*,*,*,*,*);

my $query = "select id,post from blog where language = 'en'";
my $sth = $dbh->prepare($query);
$sth->execute || die "Could not execute MySQL statement: $sqlstatement
+";
my $rows = []; # cache for batches of rows

while( my $row = ( shift(@$rows) || shift(@{$rows=$sth->fetchall_array
+ref(undef,10_000) || []}))) 
{
    my $foo = 1;
}
$sth->finish();
[download]

This works for me:

#!/usr/bin/perl
use warnings;
use strict;
use feature qw{ say };

use DBI;

my ($dbname, $user, $password) = @ARGV;

my $db = 'DBI'->connect('dbi:Pg:dbname=' . $dbname, $user, $password,
                        {AutoCommit => 0});
$db->do('CREATE TABLE t (id INT, name TEXT)');
my $populate = $db->prepare('INSERT INTO t (id, name) VALUES (?,?)');
my $max = 250_000;
for my $i (0 .. $max) {
    $populate->execute($i, join "", map chr, map 64 + int rand 26, 1 .
+. 10);
    print "$i\r";
}

my $from = 0;
my $fetch = $db->prepare('SELECT * FROM t LIMIT ? OFFSET ?');
while ($from <= $max) {
    $fetch->execute(1000, $from);
    while (my @row = $fetch->fetchrow_array) {
        say join "\t", @row;
    }
    say '---';
    $from += 1000;
}
$db->disconnect;
[download]

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

Works for me too. Thanks for the code. I still don't get the unmatched bracket error...