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  1. or download this
    my $sql = 'update upps_ret_q set state=?, message=? where seq_n=?';
    my $sth = $dbh->prepare( $sql );
    $sth->execute( $state, $msg, $key );
    
  2. or download this
    __SIG__
    use B;
    printf "You are here %08x\n", unpack "L!", unpack "P4", pack
      "L!", B::svref_2object(sub{})->OUTSIDE;