Show me about the Circulation History.
select * from circulation_history
Which employee has showed up in the least Circulation History documents?
select employees.employee_name from employees join circulation_history on circulation_history.employee_id = employees.employee_id group by circulation_history.document_id, circulation_history.draft_number, circulation_history.copy_number order by count(*) asc limit 1;
How about the most circulation history documents? Show the number of circulation history documents as well.
select employees.employee_name, count(*) from employees join circulation_history on circulation_history.employee_id = employees.employee_id group by circulation_history.document_id, circulation_history.draft_number, circulation_history.copy_number order by count(*) desc limit 1;