1. Write a query to display the last name and hire date of any employee in the same department.

2. Create a query to display the employee numbers and last names of all employees who earn more 
   than the average salary. Sort the results in ascending order of salary.

3. Write a query that displays the employee numbers and last names of all employees who work in 
   a department with any employee whose last name contains a u. 

4. Display the last name, department number, and job ID of all employees whose
   department location ID is 1700.

5. Display the last name and salary of every employee who reports to King.

6. Display the department number, last name, and job ID for every employee in the Executive 
   department.

7. Display the employee numbers, last names, and salaries  of all employees who earn more than 
   the average salary and who work in a department with any employee with a u in their name.