$  /apps/gnu/bin/perl
use Sybase::DBlib;
$dbh = new Sybase::DBlib (SERVER,USER,PASS);

$dbh->dbcmd('select ser=@@servername');
$dbh->dbsqlexec; $dbh->dbresults;
$a = $dbh->dbnextrow(1,1);

$dbh->dbcmd('select dt=getdate()');
$dbh->dbsqlexec; $dbh->dbresults;
$b = $dbh->dbnextrow(1,1);

print " a-ser:  $a->{'ser'} \n\n";  # this becomes non-existant
print " a-dt:  $a->{'dt'}  \n\n";   # this value suddenly appears, which was not even present in the original query
print " b-ser:  $b->{'ser'}  \n\n";
print " b-dt:  $b->{'dt'}   \n\n";
__END__

OUTPUT :
--------

 a-ser:

 a-dt:  Mar 30 2011  8:37:50:646PM

 b-ser:

 b-dt:  Mar 30 2011  8:37:50:646PM