DMZ 1.7.1 (DataMapper OverZealous Edition)

[eluser]Wazzu[/eluser]
Thanks, guys.
Finally I've tried this way and seems to be generating the right sql:

Code:

$u = new User();
$u->select_sum_related('invoice', 'total');
$u->group_by('id');
$u->having('total >', '100');

It's quite clear and lets me get more data from models related with my User model