Find the name of the user who gives the most reviews.
create table useracct (name varchar, u_id varchar, PRIMARY KEY (name)); create table review (u_id varchar, PRIMARY KEY (u_id))
select t1.name from useracct as t1 join review as t2 on t1.u_id = t2.u_id group by t2.u_id order by count(*) desc limit 1