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 employees (department_id VARCHAR, salary INTEGER)
### Question:
display the department id and the total salary for those departments which contains at least two employees.
### Answer:
SELECT department_id, SUM(salary) FROM employees GROUP BY department_id HAVING COUNT(*) >= 2