Problem $4[20=5*2+5+5]$ Consider the following tablei$)$ Order $($OrderID$,$ CustomerID, OrderDate$)$ OrderItems $($ItemID$,$ OrderID, ProductID, Quantity, Price$)$ Write an SQL query to find the total value of each order $($i$.$e$.,$ the sum of item prices for all items in the order$).$ Write a query to find all products that have been ordered at least once. ii$)$ Employees $($EmpoyeeID$,$ EmployeeName, Salary, ManagerID$)$ Write an SQL query to find the employees who earn more than their respective managers. iii$)$ Users $($UserID$,$ Interest$)$ Write an SQL query to find users who share common interests.