Find the name of the candidates whose oppose percentage is the lowest for each sex.
create table candidate (people_id varchar, PRIMARY KEY (people_id)); create table people (name varchar, sex varchar, people_id varchar, PRIMARY KEY (name))
select t1.name, t1.sex, min(oppose_rate) from people as t1 join candidate as t2 on t1.people_id = t2.people_id group by t1.sex