Find the full name of employee who supported the most number of customers.
create table employees (first_name varchar, last_name varchar, id varchar, PRIMARY KEY (first_name)); create table customers (support_rep_id varchar, PRIMARY KEY (support_rep_id))
select t1.first_name, t1.last_name from employees as t1 join customers as t2 on t1.id = t2.support_rep_id group by t1.id order by count(*) desc limit 1