Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE Staff_Department_Assignments (staff_id VARCHAR, date_assigned_to INTEGER, job_title_code VARCHAR)
### Question:
What is id of the staff who had a Staff Department Assignment earlier than any Clerical Staff?
### Answer:
SELECT staff_id FROM Staff_Department_Assignments WHERE date_assigned_to < (SELECT MAX(date_assigned_to) FROM Staff_Department_Assignments WHERE job_title_code = 'Clerical Staff')