Hail wise ones.

I am trying to populate a hash with a generated (%pohash = ($tmp);)string.

No matter what I try I keep getting following error:

"Odd number of elements in hash assignment at ./test.pl line 27 (#1)"

And the hash then only contains 2 key/values.

I have read many other posts and reviewed Hash, Hashref and quoting. I have even dusted off
the llama ("Learning Perl").I can kinda sorta see what is wrong, the assignment string is breaking
into $VAR1 and $VAR2, but I can not seem to solve the problem.

Thank you all in advance. 

Code and Output Follows:
#!/usr/bin/perl
use strict;
use warnings;
use diagnostics;
use Data::Dumper;
use DBI;

my $dbargs = {AutoCommit => 0,PrintError => 1};
my $dbc = DBI->connect("dbi:SQLite:dbname=da_db.db","","",$dbargs);

# get the default po
my $sth = $dbc->prepare('select * from der_pos where poid = '0');
$sth->execute;
my $po = $sth->fetchrow_hashref;

my $tmp = '';

# build a string and add some commas
while ( my ($key, $value) = each(%$po)) {
           if ($tmp) { $tmp = $tmp . ' , ';}
           $tmp = $tmp . "$key => " . (($value) ? qq("$value")  : q("a
+"));
}

#print $tmp . "\n";

my %pohash = ();
%hash = ($tmp);
print Dumper(%pohash);

Output Follows:
Odd number of elements in hash assignment at ./test.pl line 25 (#1)
    (W misc) You specified an odd number of elements to initialize a h
+ash,
    which is odd, because hashes come in key/value pairs.

$VAR1 = 'Comments => "a" , InstallAddID => "a" , County => "a" , Ariba
+ToID => "a" , AribaFromID => "a" , ProcessStatus => "a" , DeliverToAd
+dID => "a" , HasBadPart => "a" , ShipToCode => "a" , AribaPO => "Defa
+ult" , DeptidCode => "a" , OrderType => "a" , PODateProcessed => "201
+0-06-29 10:53:25" , PODate => "a" , ShippingNotes => "a" , Requisitio
+nNum => "a" , Mode => "a" , StoreNumber => "a" , Replaced => "a" , Ta
+rget => "all" , OrderNotes => "a" , ReqDeliveryDate => "2010-06-29 10
+:53:25" , Iteration => "a" , LineItemCount => "a" , POID => "a" , Jam
+coPO => "a" , DebugData => "a" , POTotal => "a"';
$VAR2 = undef;
Issuing rollback() due to DESTROY without explicit disconnect() of DBD
+::SQLite::db handle dbname=/da_db.db.

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In reply to Hash assignment "odd" ness by phigment

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