multiple db, multiple table join

Good evening all, I have a strange situation which I cannot think myself out of. To make it simple my db looks like this (hr db, emp_master table) +--------+---------------+ | emp_id | last_name | +--------+---------------+ | 1 | smith | | 3 | wesson | | 4 | doe | | 6 | clinton | | 7 | bush | +--------+---------------+ (tools db, orders table) +--------+---------+---------+ | order_id | emp_id |approved_by | +--------+---------+---------+ | 1 | 1 | 6 | | 2 | 4 | 7 | | 3 | 3 | 4 | | 4 | 7 | 3 | | 5 | 6 | 1 | +--------+---------+---------+ I want my query results to be similiar to this: if I'm selecting all, this is what I want: 1 smith clinton 2 doe bush 3 wesson doe 4 bush wesson 5 clinton smith It seems so easy, but I've tried hard and cannot get it to work I've been going along the lines (changed several times) of Select tools.orders.order_id, hr.emp_master.last_name as ordered_by, hr.emp_master.last_name as approved_by from tools.orders, hr.emp_master where ((tools.orders.emp_id=hr.emp_master.emp_id) and (tools.orders.approved_by=hr.emp_master.emp_id)) (I hope I wrote that right, it was freehand, not in db) Thank you for any direction you can give me! Dam