Get to know the data
Get to know the OVER() clause
Computations with OVER()
Aggregate functions with OVER()
Using OVER() with WHERE
Instruction
Good job! OVER() works with all aggregate functions. Let's try an example with COUNT():
SELECT Id, Name, COUNT(Id) OVER() AS Count FROM Department ORDER BY Name ASC;
Here, we show the Id and Name of each department, plus the total number of all departments in the company. Lastly, we sort all the rows by name.
Exercise
For every employee that earns more than 4000, show their FirstName, LastName, Salary, and the total number of all employees (as EmployeeNumber).
