Why doesn't LAST_VALUE return the last value?

Question

I want to find the last value of y over an ordered partition using a query like this:

SELECT
  x,
  LAST_VALUE(y) OVER (PARTITION BY x ORDER BY y AS         


        

Answer 1

Even that question title uses LAST_VALUE - the question itself asks for Largest Value!
I would just go with below:

SELECT x, MAX(y) OVER (PARTITION BY x) FROM table  

And if no other fields from table involved - i would just do simple GROUP BY:

SELECT x, MAX(y) FROM table GROUP BY x 

Of course, we shoudl remember that not always Largest value and MAX value are the same thing.