Whose checking balance is the highest?
select name from accounts as t1 join checking as t2 on t1.custid = t2.custid order by t2.balance desc limit 1
What is it?
select t2.balance from accounts as t1 join checking as t2 on t1.custid = t2.custid order by t2.balance desc limit 1
what is her saving balance?
select t3.balance from accounts as t1 join checking as t2 on t1.custid = t2.custid join savings as t3 on t1.custid = t3.custid order by t2.balance desc limit 1