$q = $parse->($s = qq{ON 2-Oct-1993});
is_deeply($q->{sql}, \" AND ts >= $t0 AND ts <= $t1", 'ON SQL');
$q = $parse->("FROM z $s");
$q = $parse->($s = qq{ON 2-Oct-1993});
is_deeply($q->{sql}, \" AND ts >= $t0 AND ts <= $t1", 'ON SQL');
$q = $parse->("FROM z $s");