Find the start and end dates of detentions of teachers with last name "Schultz".
create table detention (datetime_detention_start varchar, teacher_id varchar, PRIMARY KEY (datetime_detention_start)); create table teachers (teacher_id varchar, last_name varchar, PRIMARY KEY (teacher_id))
select t1.datetime_detention_start, datetime_detention_end from detention as t1 join teachers as t2 on t1.teacher_id = t2.teacher_id where t2.last_name = "schultz"