Untitled

    DROP TABLE IF EXISTS emp_manager;
    CREATE TABLE emp_manager (
    emp_no INT(11) NOT NULL, 
    dept_no CHAR(4) NULL, 
    manager_no INT(11) NOT NULL
    );
    
    
    
    
    INSERT INTO emp_manager SELECT 
    U.*
    FROM 
    (SELECT 
    A.*
    FROM (SELECT
        e.emp_no AS employee_ID,
            MIN(de.dept_no) AS department_code,
            (SELECT 
                    emp_no
                FROM
                    dept_manager
                WHERE
                    emp_no = 110022) AS manager_ID
    FROM
        employees e
    JOIN dept_emp de ON e.emp_no = de.emp_no
    WHERE
        e.emp_no <= 10020
    GROUP BY e.emp_no
    ORDER BY e.emp_no) AS A 
UNION SELECT 
    B.*
FROM
    (SELECT 
        e.emp_no AS employee_ID,
            MIN(de.dept_no) AS department_code,
            (SELECT 
                    emp_no
                FROM
                    dept_manager
                WHERE
                    emp_no = 110039) AS manager_ID
    FROM
        employees e
    JOIN dept_emp de ON e.emp_no = de.emp_no
    WHERE
        e.emp_no > 10020
    GROUP BY e.emp_no
    ORDER BY e.emp_no) AS B
   UNION SELECT 
   C.*
	FROM
    (SELECT 
        e.emp_no AS employee_ID,
            MIN(de.dept_no) AS department_code,
            (SELECT 
                    emp_no
                FROM
                    dept_manager
                WHERE
                    emp_no = 110039) AS manager_ID
    FROM
        employees e
    JOIN dept_emp de ON e.emp_no = de.emp_no
    WHERE
        e.emp_no = 110022
    GROUP BY e.emp_no
    ORDER BY e.emp_no) AS C 	
	UNION SELECT
    D.* 
    FROM
		 (SELECT 
        e.emp_no AS employee_ID,
            MIN(de.dept_no) AS department_code,
            (SELECT 
                    emp_no
                FROM
                    dept_manager
                WHERE
                    emp_no = 110022) AS manager_ID
    FROM
        employees e
    JOIN dept_emp de ON e.emp_no = de.emp_no
    WHERE
        e.emp_no > 110039
    GROUP BY e.emp_no
    ORDER BY e.emp_no) AS D
    )
    AS U;
    SELECT * FROM emp_manager;