mysq query without subselects

Hello, I need to grab the max value of all of the data in a table grabbing the max total for each client. Example. T1 id total clientid 1 100 111 2 200 111 3 100 112 4 150 112 I need a query that will grab the highest total per clientid (200, and 150) then average them. My first inclination is to do a subselect select avg(total) from t1 where t1.total=(select max(total) from t1 t2 where t2.clientid=t1.clientid) But can't use subselects with mysql....how do I do it?? Thanks!