List all employees in the circulation history of the document with id 1. List the employee's name.
SELECT Employees.employee_name FROM Employees JOIN Circulation_History ON Circulation_History.employee_id = Employees.employee_id WHERE Circulation_History.document_id = 1;
list all employees in the circulation history of a specific document refers to JOIN between Employees and Circulation_History tables on employee_id; employee's name refers to Employees.employee_name; specific document id condition is given by WHERE Circulation_History.document_id = 1;