Comment 2 for bug 1226603

Okay, let's see if I can help.

 function oldestMother() { return $this->_parentsQuery('full', 'DESC', 'F'); }

Where you got:
 " SELECT SQL_CACHE".
 " parentfamily.l_to AS id,".
 " childbirth.d_julianday2-birth.d_julianday1 AS age".

I haven't reviewed the full SQL statement yet, but I'd say the fact or name childbirth is confusing. It sounds as if the child (in my example i01) has got two birthdays: the day he was actually born and the day of the adoption (which I omnitted).

I'll take a look into it to find out whether it is possible to filter out adopted childs.